Group testing modules (#3014)

* move security content from spring-security-rest-full * swagger update * move query language to new module * rename spring-security-rest-full to spring-rest-full * group persistence modules * group testing modules * try fix conflict
2017-11-12 11:16:46 +01:00
parent b383d83bf4
commit 776a01429e
236 changed files with 37 additions and 18 deletions
@@ -0,0 +1,2 @@
+### Relevant Articles:
+- [Intro to Gatling](http://www.baeldung.com/introduction-to-gatling)
@@ -0,0 +1,110 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.baeldung</groupId>
+    <artifactId>gatling</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
+        <scala.version>2.11.7</scala.version>
+        <encoding>UTF-8</encoding>
+        <gatling.version>2.2.0</gatling.version>
+        <scala-maven-plugin.version>3.2.2</scala-maven-plugin.version>
+    </properties>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>io.gatling</groupId>
+                <artifactId>gatling-app</artifactId>
+                <version>${gatling.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>io.gatling</groupId>
+                <artifactId>gatling-recorder</artifactId>
+                <version>${gatling.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>io.gatling.highcharts</groupId>
+                <artifactId>gatling-charts-highcharts</artifactId>
+                <version>${gatling.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.scala-lang</groupId>
+                <artifactId>scala-library</artifactId>
+                <version>${scala.version}</version>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <dependencies>
+        <dependency>
+            <groupId>io.gatling.highcharts</groupId>
+            <artifactId>gatling-charts-highcharts</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.gatling</groupId>
+            <artifactId>gatling-app</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.gatling</groupId>
+            <artifactId>gatling-recorder</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.scala-lang</groupId>
+            <artifactId>scala-library</artifactId>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <testSourceDirectory>src/test/scala</testSourceDirectory>
+        <pluginManagement>
+            <plugins>
+                <plugin>
+                    <groupId>net.alchim31.maven</groupId>
+                    <artifactId>scala-maven-plugin</artifactId>
+                    <version>${scala-maven-plugin.version}</version>
+                </plugin>
+            </plugins>
+        </pluginManagement>
+        <plugins>
+            <plugin>
+                <groupId>net.alchim31.maven</groupId>
+                <artifactId>scala-maven-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>testCompile</goal>
+                        </goals>
+                        <configuration>
+                            <args>
+                                <arg>-Ybackend:GenBCode</arg>
+                                <arg>-Ydelambdafy:method</arg>
+                                <arg>-target:jvm-1.8</arg>
+                                <arg>-deprecation</arg>
+                                <arg>-feature</arg>
+                                <arg>-unchecked</arg>
+                                <arg>-language:implicitConversions</arg>
+                                <arg>-language:postfixOps</arg>
+                            </args>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>io.gatling</groupId>
+                <artifactId>gatling-maven-plugin</artifactId>
+                <version>${gatling.version}</version>
+                <executions>
+                    <execution>
+                        <phase>test</phase>
+                        <goals><goal>execute</goal></goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>
@@ -0,0 +1,127 @@
+#########################
+# Gatling Configuration #
+#########################
+
+# This file contains all the settings configurable for Gatling with their default values
+
+gatling {
+  core {
+    #outputDirectoryBaseName = "" # The prefix for each simulation result folder (then suffixed by the report generation timestamp)
+    #runDescription = ""          # The description for this simulation run, displayed in each report
+    #encoding = "utf-8"           # Encoding to use throughout Gatling for file and string manipulation
+    #simulationClass = ""         # The FQCN of the simulation to run (when used in conjunction with noReports, the simulation for which assertions will be validated)
+    #mute = false                 # When set to true, don't ask for simulation name nor run description (currently only used by Gatling SBT plugin)
+    #elFileBodiesCacheMaxCapacity = 200        # Cache size for request body EL templates, set to 0 to disable
+    #rawFileBodiesCacheMaxCapacity = 200       # Cache size for request body Raw templates, set to 0 to disable
+    #rawFileBodiesInMemoryMaxSize = 1000       # Below this limit, raw file bodies will be cached in memory
+
+    extract {
+      regex {
+        #cacheMaxCapacity = 200 # Cache size for the compiled regexes, set to 0 to disable caching
+      }
+      xpath {
+        #cacheMaxCapacity = 200 # Cache size for the compiled XPath queries,  set to 0 to disable caching
+      }
+      jsonPath {
+        #cacheMaxCapacity = 200 # Cache size for the compiled jsonPath queries, set to 0 to disable caching
+        #preferJackson = false  # When set to true, prefer Jackson over Boon for JSON-related operations
+      }
+      css {
+        #cacheMaxCapacity = 200 # Cache size for the compiled CSS selectors queries,  set to 0 to disable caching
+      }
+    }
+
+    directory {
+      #data = user-files/data               # Folder where user's data (e.g. files used by Feeders) is located
+      #bodies = user-files/bodies           # Folder where bodies are located
+      #simulations = user-files/simulations # Folder where the bundle's simulations are located
+      #reportsOnly = ""                     # If set, name of report folder to look for in order to generate its report
+      #binaries = ""                        # If set, name of the folder where compiles classes are located: Defaults to GATLING_HOME/target.
+      #results = results                    # Name of the folder where all reports folder are located
+    }
+  }
+  charting {
+    #noReports = false       # When set to true, don't generate HTML reports
+    #maxPlotPerSeries = 1000 # Number of points per graph in Gatling reports
+    #useGroupDurationMetric = false  # Switch group timings from cumulated response time to group duration.
+    indicators {
+      #lowerBound = 800      # Lower bound for the requests' response time to track in the reports and the console summary
+      #higherBound = 1200    # Higher bound for the requests' response time to track in the reports and the console summary
+      #percentile1 = 50      # Value for the 1st percentile to track in the reports, the console summary and Graphite
+      #percentile2 = 75      # Value for the 2nd percentile to track in the reports, the console summary and Graphite
+      #percentile3 = 95      # Value for the 3rd percentile to track in the reports, the console summary and Graphite
+      #percentile4 = 99      # Value for the 4th percentile to track in the reports, the console summary and Graphite
+    }
+  }
+  http {
+    #fetchedCssCacheMaxCapacity = 200          # Cache size for CSS parsed content, set to 0 to disable
+    #fetchedHtmlCacheMaxCapacity = 200         # Cache size for HTML parsed content, set to 0 to disable
+    #perUserCacheMaxCapacity = 200             # Per virtual user cache size, set to 0 to disable
+    #warmUpUrl = "http://gatling.io"           # The URL to use to warm-up the HTTP stack (blank means disabled)
+    #enableGA = true                           # Very light Google Analytics, please support
+    ssl {
+      keyStore {
+        #type = ""      # Type of SSLContext's KeyManagers store
+        #file = ""      # Location of SSLContext's KeyManagers store
+        #password = ""  # Password for SSLContext's KeyManagers store
+        #algorithm = "" # Algorithm used SSLContext's KeyManagers store
+      }
+      trustStore {
+        #type = ""      # Type of SSLContext's TrustManagers store
+        #file = ""      # Location of SSLContext's TrustManagers store
+        #password = ""  # Password for SSLContext's TrustManagers store
+        #algorithm = "" # Algorithm used by SSLContext's TrustManagers store
+      }
+    }
+    ahc {
+      #keepAlive = true                                # Allow pooling HTTP connections (keep-alive header automatically added)
+      #connectTimeout = 60000                          # Timeout when establishing a connection
+      #pooledConnectionIdleTimeout = 60000             # Timeout when a connection stays unused in the pool
+      #readTimeout = 60000                             # Timeout when a used connection stays idle
+      #maxRetry = 2                                    # Number of times that a request should be tried again
+      #requestTimeout = 60000                          # Timeout of the requests
+      #acceptAnyCertificate = true                     # When set to true, doesn't validate SSL certificates
+      #httpClientCodecMaxInitialLineLength = 4096      # Maximum length of the initial line of the response (e.g. "HTTP/1.0 200 OK")
+      #httpClientCodecMaxHeaderSize = 8192             # Maximum size, in bytes, of each request's headers
+      #httpClientCodecMaxChunkSize = 8192              # Maximum length of the content or each chunk
+      #webSocketMaxFrameSize = 10240000                # Maximum frame payload size
+      #sslEnabledProtocols = [TLSv1.2, TLSv1.1, TLSv1] # Array of enabled protocols for HTTPS, if empty use the JDK defaults
+      #sslEnabledCipherSuites = []                     # Array of enabled cipher suites for HTTPS, if empty  use the JDK defaults
+      #sslSessionCacheSize = 0                         # SSLSession cache size, set to 0 to use JDK's default
+      #sslSessionTimeout = 0                           # SSLSession timeout in seconds, set to 0 to use JDK's default (24h)
+      #useOpenSsl = false                              # if OpenSSL should be used instead of JSSE (requires tcnative jar)
+      #useNativeTransport = false                      # if native transport should be used instead of Java NIO (requires netty-transport-native-epoll, currently Linux only)
+      #usePooledMemory = true                          # if Gatling should use pooled memory
+      #tcpNoDelay = true
+      #soReuseAddress = false
+      #soLinger = -1
+      #soSndBuf = -1
+      #soRcvBuf = -1
+    }
+    dns {
+      #queryTimeout = 5000                             # Timeout of each DNS query in millis
+      #maxQueriesPerResolve = 3                        # Maximum allowed number of DNS queries for a given name resolution
+    }
+  }
+  data {
+    #writers = [console, file]      # The list of DataWriters to which Gatling write simulation data (currently supported : console, file, graphite, jdbc)
+    console {
+      #light = false                # When set to true, displays a light version without detailed request stats
+    }
+    file {
+      #bufferSize = 8192            # FileDataWriter's internal data buffer size, in bytes
+    }
+    leak {
+      #noActivityTimeout = 30  # Period, in seconds, for which Gatling may have no activity before considering a leak may be happening
+    }
+    graphite {
+      #light = false              # only send the all* stats
+      #host = "localhost"         # The host where the Carbon server is located
+      #port = 2003                # The port to which the Carbon server listens to (2003 is default for plaintext, 2004 is default for pickle)
+      #protocol = "tcp"           # The protocol used to send data to Carbon (currently supported : "tcp", "udp")
+      #rootPathPrefix = "gatling" # The common prefix of all metrics sent to Graphite
+      #bufferSize = 8192          # GraphiteDataWriter's internal data buffer size, in bytes
+      #writeInterval = 1          # GraphiteDataWriter's write interval, in seconds
+    }
+  }
+}
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+
+    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%-5level] %logger{15} - %msg%n%rEx</pattern>
+            <immediateFlush>false</immediateFlush>
+        </encoder>
+    </appender>
+
+    <!-- Uncomment for logging ALL HTTP request and responses -->
+    <!-- 	<logger name="io.gatling.http.ahc" level="TRACE" /> -->
+    <!--    <logger name="io.gatling.http.response" level="TRACE" /> -->
+    <!-- Uncomment for logging ONLY FAILED HTTP request and responses -->
+    <!-- 	<logger name="io.gatling.http.ahc" level="DEBUG" /> -->
+    <!--    <logger name="io.gatling.http.response" level="DEBUG" /> -->
+
+    <root level="WARN">
+        <appender-ref ref="CONSOLE" />
+    </root>
+
+</configuration>
@@ -0,0 +1,53 @@
+recorder {
+  core {
+    #mode = "Proxy"
+    #encoding = "utf-8"               # The encoding used for reading/writing request bodies and the generated simulation
+    #outputFolder = ""                # The folder where generated simulation will we written
+    #package = ""                     # The package's name of the generated simulation
+    #className = "RecordedSimulation" # The name of the generated Simulation class
+    #thresholdForPauseCreation = 100  # The minimum time, in milliseconds, that must pass between requests to trigger a pause creation
+    #saveConfig = false               # When set to true, the configuration from the Recorder GUI overwrites this configuration
+    #headless = false                 # When set to true, run the Recorder in headless mode instead of the GUI
+    #harFilePath = ""                 # The path of the HAR file to convert
+  }
+  filters {
+    #filterStrategy = "Disabled" # The selected filter resources filter strategy (currently supported : "Disabled", "BlackList", "WhiteList")
+    #whitelist = []              # The list of ressources patterns that are part of the Recorder's whitelist
+    #blacklist = []              # The list of ressources patterns that are part of the Recorder's blacklist
+  }
+  http {
+    #automaticReferer = true       # When set to false, write the referer + enable 'disableAutoReferer' in the generated simulation
+    #followRedirect = true         # When set to false, write redirect requests + enable 'disableFollowRedirect' in the generated simulation
+    #removeCacheHeaders = true     # When set to true, removes from the generated requests headers leading to request caching
+    #inferHtmlResources = true     # When set to true, add inferred resources + set 'inferHtmlResources' with the configured blacklist/whitelist in the generated simulation
+    #checkResponseBodies = false   # When set to true, save response bodies as files and add raw checks in the generated simulation
+  }
+  proxy {
+    #port = 8000                         # Local port used by Gatling's Proxy for HTTP/HTTPS
+    https {
+      #mode = "SelfSignedCertificate"    # The selected "HTTPS mode" (currently supported : "SelfSignedCertificate", "ProvidedKeyStore", "GatlingCertificateAuthority", "CustomCertificateAuthority")
+      keyStore {
+        #path = ""                       # The path of the custom key store
+        #password = ""                   # The password for this key store
+        #type = "JKS"                    # The type of the key store (currently supported: "JKS")
+      }
+      certificateAuthority {
+        #certificatePath = ""            # The path of the custom certificate
+        #privateKeyPath = ""             # The certificate's private key path
+      }
+    }
+    outgoing {
+      #host = ""     # The outgoing proxy's hostname
+      #username = "" # The username to use to connect to the outgoing proxy
+      #password = "" # The password corresponding to the user to use to connect to the outgoing proxy
+      #port = 0      # The HTTP port to use to connect to the outgoing proxy
+      #sslPort = 0   # If set, The HTTPS port to use to connect to the outgoing proxy
+    }
+  }
+  netty {
+    #maxInitialLineLength = 10000 # Maximum length of the initial line of the response (e.g. "HTTP/1.0 200 OK")
+    #maxHeaderSize = 20000        # Maximum size, in bytes, of each request's headers
+    #maxChunkSize = 8192          # Maximum length of the content or each chunk
+    #maxContentLength = 100000000 # Maximum length of the aggregated content of each response
+  }
+}
@@ -0,0 +1,13 @@
+import io.gatling.app.Gatling
+import io.gatling.core.config.GatlingPropertiesBuilder
+
+object Engine extends App {
+
+    val props = new GatlingPropertiesBuilder
+    props.dataDirectory(IDEPathHelper.dataDirectory.toString)
+    props.resultsDirectory(IDEPathHelper.resultsDirectory.toString)
+    props.bodiesDirectory(IDEPathHelper.bodiesDirectory.toString)
+    props.binariesDirectory(IDEPathHelper.mavenBinariesDirectory.toString)
+
+    Gatling.fromMap(props.build)
+}
@@ -0,0 +1,22 @@
+import java.nio.file.Path
+
+import io.gatling.commons.util.PathHelper._
+
+object IDEPathHelper {
+
+    val gatlingConfUrl: Path = getClass.getClassLoader.getResource("gatling.conf").toURI
+    val projectRootDir = gatlingConfUrl.ancestor(3)
+
+    val mavenSourcesDirectory = projectRootDir / "src" / "test" / "scala"
+    val mavenResourcesDirectory = projectRootDir / "src" / "test" / "resources"
+    val mavenTargetDirectory = projectRootDir / "target"
+    val mavenBinariesDirectory = mavenTargetDirectory / "test-classes"
+
+    val dataDirectory = mavenResourcesDirectory / "data"
+    val bodiesDirectory = mavenResourcesDirectory / "bodies"
+
+    val recorderOutputDirectory = mavenSourcesDirectory
+    val resultsDirectory = mavenTargetDirectory / "gatling"
+
+    val recorderConfigFile = mavenResourcesDirectory / "recorder.conf"
+}
@@ -0,0 +1,12 @@
+import io.gatling.recorder.GatlingRecorder
+import io.gatling.recorder.config.RecorderPropertiesBuilder
+
+object Recorder extends App {
+
+    val props = new RecorderPropertiesBuilder
+    props.simulationOutputFolder(IDEPathHelper.recorderOutputDirectory.toString)
+    props.simulationPackage("org.baeldung")
+    props.bodiesFolder(IDEPathHelper.bodiesDirectory.toString)
+
+    GatlingRecorder.fromMap(props.build, Some(IDEPathHelper.recorderConfigFile))
+}
@@ -0,0 +1,46 @@
+package org.baeldung
+
+import scala.concurrent.duration._
+
+import io.gatling.core.Predef._
+import io.gatling.http.Predef._
+import io.gatling.jdbc.Predef._
+
+class RecordedSimulation extends Simulation {
+
+    val httpProtocol = http
+        .baseURL("http://computer-database.gatling.io")
+        .inferHtmlResources(BlackList(""".*\.css""", """.*\.js""", """.*\.ico"""), WhiteList())
+        .acceptHeader("text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8")
+        .acceptEncodingHeader("gzip, deflate")
+        .acceptLanguageHeader("it-IT,it;q=0.8,en-US;q=0.5,en;q=0.3")
+        .userAgentHeader("Mozilla/5.0 (Windows NT 10.0; WOW64; rv:46.0) Gecko/20100101 Firefox/46.0")
+
+
+
+
+
+    val scn = scenario("RecordedSimulation")
+        .exec(http("request_0")
+            .get("/"))
+        .pause(5)
+        .exec(http("request_1")
+            .get("/computers?f=amstrad"))
+        .pause(4)
+        .exec(http("request_2")
+            .get("/computers/412"))
+        .pause(2)
+        .exec(http("request_3")
+            .get("/"))
+        .pause(2)
+        .exec(http("request_4")
+            .get("/computers?p=1"))
+        .pause(1)
+        .exec(http("request_5")
+            .get("/computers?p=2"))
+        .pause(2)
+        .exec(http("request_6")
+            .get("/computers?p=3"))
+
+    setUp(scn.inject(atOnceUsers(1))).protocols(httpProtocol)
+}
@@ -0,0 +1,3 @@
+### Relevant articles
+
+- [Introduction to Testing with Spock and Groovy](http://www.baeldung.com/groovy-spock)
@@ -0,0 +1,54 @@
+<?xml version="1.0"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.spockframework</groupId>
+    <artifactId>groovy-spock</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <packaging>jar</packaging>
+    <name>Spock Framework - Example Project</name>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+    </properties>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+        <relativePath>../</relativePath>
+    </parent>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.codehaus.gmavenplus</groupId>
+                <artifactId>gmavenplus-plugin</artifactId>
+                <version>1.5</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>compile</goal>
+                            <goal>testCompile</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.spockframework</groupId>
+            <artifactId>spock-core</artifactId>
+            <version>1.0-groovy-2.4</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.codehaus.groovy</groupId>
+            <artifactId>groovy-all</artifactId>
+            <version>2.4.7</version>
+        </dependency>
+    </dependencies>
+</project>
@@ -0,0 +1,89 @@
+import spock.lang.Specification
+
+class FirstSpecification extends Specification {
+
+    def "one plus one should equal two"() {
+        expect:
+        1 + 1 == 2
+    }
+
+    def "two plus two should equal four"() {
+        given:
+        int left = 2
+        int right = 2
+
+        when:
+        int result = left + right
+
+        then:
+        result == 4
+    }
+
+    def "Should be able to remove from list"() {
+        given:
+        def list = [1, 2, 3, 4]
+
+        when:
+        list.remove(0)
+
+        then:
+        list == [2, 3, 4]
+    }
+
+    def "Should get an index out of bounds when removing a non-existent item"() {
+        given:
+        def list = [1, 2, 3, 4]
+
+        when:
+        list.remove(20)
+
+        then:
+        thrown(IndexOutOfBoundsException)
+        list.size() == 4
+    }
+
+    def "numbers to the power of two"(int a, int b, int c) {
+        expect:
+        Math.pow(a, b) == c
+
+        where:
+        a | b | c
+        1 | 2 | 1
+        2 | 2 | 4
+        3 | 2 | 9
+    }
+
+    def "Should return default value for mock"() {
+        given:
+        def paymentGateway = Mock(PaymentGateway)
+
+        when:
+        def result = paymentGateway.makePayment(12.99)
+
+        then:
+        !result
+    }
+
+    def "Should return true value for mock"() {
+        given:
+        def paymentGateway = Mock(PaymentGateway)
+        paymentGateway.makePayment(20) >> true
+
+        when:
+        def result = paymentGateway.makePayment(20)
+
+        then:
+        result
+    }
+
+    def "Should verify notify was called"() {
+        given:
+        def notifier = Mock(Notifier)
+
+        when:
+        notifier.notify('foo')
+
+        then:
+        1 * notifier.notify('foo')
+    }
+}
@@ -0,0 +1,3 @@
+interface Notifier {
+    void notify(String message)
+}
@@ -0,0 +1,3 @@
+interface PaymentGateway {
+    boolean makePayment(BigDecimal amount)
+}
@@ -0,0 +1,9 @@
+### Relevant Articles:
+- [The Basics of JUnit 5 – A Preview](http://www.baeldung.com/junit-5-preview)
+- [A Guide to JUnit 5](http://www.baeldung.com/junit-5)
+- [Guide to Dynamic Tests in Junit 5](http://www.baeldung.com/junit5-dynamic-tests)
+- [A Guide to @RepeatedTest in Junit 5](http://www.baeldung.com/junit-5-repeated-test)
+- [Guide to Dynamic Tests in Junit 5](http://www.baeldung.com/junit5-dynamic-tests)
+- [A Guied to JUnit 5 Extensions](http://www.baeldung.com/junit-5-extensions)
+- [Inject Parameters into JUnit Jupiter Unit Tests](http://www.baeldung.com/junit-5-parameters)
+- [Mockito and JUnit 5 – Using ExtendWith](http://www.baeldung.com/mockito-junit-5-extension)
@@ -0,0 +1,130 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <!-- NOT NEEDED - JSP <groupId>com.baeldung</groupId>-->
+    <artifactId>junit-5</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <name>junit-5</name>
+    <description>Intro to JUnit 5</description>
+	
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+        <relativePath>../</relativePath>        
+    </parent>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <java.version>1.8</java.version>
+        <junit.jupiter.version>5.0.1</junit.jupiter.version>
+        <junit.platform.version>1.0.1</junit.platform.version>
+        <junit.vintage.version>4.12.1</junit.vintage.version>
+        <log4j2.version>2.8.2</log4j2.version>
+        <h2.version>1.4.196</h2.version>
+        <mockito.version>2.11.0</mockito.version>
+
+        <maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
+        <maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
+        <junit4.version>4.12</junit4.version>
+        <spring.version>5.0.1.RELEASE</spring.version>
+    </properties>
+
+    <build>
+        <resources>
+            <resource>
+                <directory>src/test/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
+        <plugins>
+            <plugin>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>${maven-compiler-plugin.version}</version>
+                <configuration>
+                    <source>${java.version}</source>
+                    <target>${java.version}</target>
+                </configuration>
+            </plugin>
+            <plugin>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>${maven-surefire-plugin.version}</version>
+                <dependencies>
+                    <dependency>
+                        <groupId>org.junit.platform</groupId>
+                        <artifactId>junit-platform-surefire-provider</artifactId>
+                        <version>${junit.platform.version}</version>
+                    </dependency>
+                </dependencies>
+            </plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>exec-maven-plugin</artifactId>
+                <version>1.6.0</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>java</goal>
+                        </goals>
+                    </execution>
+                </executions>
+                <configuration>
+                    <mainClass>com.baeldung.TestLauncher</mainClass>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <version>${junit.jupiter.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.platform</groupId>
+            <artifactId>junit-platform-runner</artifactId>
+            <version>${junit.platform.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.vintage</groupId>
+            <artifactId>junit-vintage-engine</artifactId>
+            <version>${junit.vintage.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-core</artifactId>
+            <version>${log4j2.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <version>${h2.version}</version>
+        </dependency>
+          <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>${junit4.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-test</artifactId>
+            <version>${spring.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+        
+    </dependencies>
+  
+</project>
@@ -0,0 +1,41 @@
+package com.baeldung.junit5.mockito;
+
+public class User {
+    
+    private Integer id;
+    private String name;
+    private int age;
+    
+    public User() {
+    }
+    
+    public User(String name, int age) {
+        this.name = name;
+        this.age = age;
+    }
+    
+    public Integer getId() {
+        return id;
+    }
+    public void setId(Integer id) {
+        this.id = id;
+    }
+    public String getName() {
+        return name;
+    }
+    public void setName(String name) {
+        this.name = name;
+    }
+    public int getAge() {
+        return age;
+    }
+    public void setAge(int age) {
+        this.age = age;
+    }
+
+    @Override
+    public String toString() {
+        return "User [id=" + id + ", name=" + name + ", age=" + age + "]";
+    }
+
+}
@@ -0,0 +1,9 @@
+package com.baeldung.junit5.mockito.repository;
+
+import com.baeldung.junit5.mockito.User;
+
+public interface MailClient {
+
+    void sendUserRegistrationMail(User user);
+    
+}
@@ -0,0 +1,9 @@
+package com.baeldung.junit5.mockito.repository;
+
+public interface SettingRepository {
+    
+    int getUserMinAge();
+
+    int getUserNameMinLength();
+
+}
@@ -0,0 +1,10 @@
+package com.baeldung.junit5.mockito.repository;
+
+import com.baeldung.junit5.mockito.User;
+
+public interface UserRepository {
+
+    User insert(User user);
+    boolean isUsernameAlreadyExists(String userName);
+    
+}
@@ -0,0 +1,46 @@
+package com.baeldung.junit5.mockito.service;
+
+import com.baeldung.junit5.mockito.User;
+import com.baeldung.junit5.mockito.repository.MailClient;
+import com.baeldung.junit5.mockito.repository.SettingRepository;
+import com.baeldung.junit5.mockito.repository.UserRepository;
+
+public class DefaultUserService implements UserService {
+    
+    private UserRepository userRepository;
+    private SettingRepository settingRepository;
+    private MailClient mailClient;
+    
+    public DefaultUserService(UserRepository userRepository, SettingRepository settingRepository, MailClient mailClient) {
+        this.userRepository = userRepository;
+        this.settingRepository = settingRepository;
+        this.mailClient = mailClient;
+    }
+
+    @Override
+    public User register(User user) {
+        validate(user);
+        User insertedUser = userRepository.insert(user);
+        mailClient.sendUserRegistrationMail(insertedUser);
+        return insertedUser;
+    }
+
+    private void validate(User user) {
+        if(user.getName() == null) {
+            throw new RuntimeException(Errors.USER_NAME_REQUIRED);
+        }
+
+        if(user.getName().length() < settingRepository.getUserNameMinLength()) {
+            throw new RuntimeException(Errors.USER_NAME_SHORT);
+        }
+        
+        if(user.getAge() < settingRepository.getUserMinAge()) {
+            throw new RuntimeException(Errors.USER_AGE_YOUNG);
+        }
+        
+        if(userRepository.isUsernameAlreadyExists(user.getName())) {
+            throw new RuntimeException(Errors.USER_NAME_DUPLICATE);
+        }
+    }
+
+}
@@ -0,0 +1,10 @@
+package com.baeldung.junit5.mockito.service;
+
+public class Errors {
+
+    public static final String USER_NAME_REQUIRED = "user.name.required";
+    public static final String USER_NAME_SHORT = "user.name.short";
+    public static final String USER_AGE_YOUNG = "user.age.young";
+    public static final String USER_NAME_DUPLICATE = "user.name.duplicate";
+    
+}
@@ -0,0 +1,9 @@
+package com.baeldung.junit5.mockito.service;
+
+import com.baeldung.junit5.mockito.User;
+
+public interface UserService {
+    
+    User register(User user);
+
+}
@@ -0,0 +1,28 @@
+package com.baeldung;
+
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+import org.junit.jupiter.api.Test;
+
+public class AssertionUnitTest {
+
+    @Test
+    public void testConvertToDoubleThrowException() {
+        String age = "eighteen";
+        assertThrows(NumberFormatException.class, () -> {
+            convertToInt(age);
+        });
+
+        assertThrows(NumberFormatException.class, () -> {
+            convertToInt(age);
+        });
+    }
+
+    private static Integer convertToInt(String str) {
+        if (str == null) {
+            return null;
+        }
+        return Integer.valueOf(str);
+    }
+
+}
@@ -0,0 +1,29 @@
+package com.baeldung;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assumptions.assumeFalse;
+import static org.junit.jupiter.api.Assumptions.assumeTrue;
+import static org.junit.jupiter.api.Assumptions.assumingThat;
+
+import org.junit.jupiter.api.Test;
+
+public class AssumptionUnitTest {
+
+    @Test
+    void trueAssumption() {
+        assumeTrue(5 > 1);
+        assertEquals(5 + 2, 7);
+    }
+
+    @Test
+    void falseAssumption() {
+        assumeFalse(5 < 1);
+        assertEquals(5 + 2, 7);
+    }
+
+    @Test
+    void assumptionThat() {
+        String someString = "Just a string";
+        assumingThat(someString.equals("Just a string"), () -> assertEquals(2 + 2, 4));
+    }
+}
@@ -0,0 +1,126 @@
+package com.baeldung;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.function.Function;
+import java.util.stream.IntStream;
+import java.util.stream.Stream;
+
+import org.junit.jupiter.api.DynamicTest;
+import org.junit.jupiter.api.TestFactory;
+import org.junit.jupiter.api.function.ThrowingConsumer;
+
+import com.baeldung.helpers.Employee;
+import com.baeldung.helpers.EmployeeDao;
+
+public class DynamicTestsExample {
+
+    @TestFactory
+    Collection<DynamicTest> dynamicTestsWithCollection() {
+        return Arrays.asList(DynamicTest.dynamicTest("Add test", () -> assertEquals(2, Math.addExact(1, 1))), DynamicTest.dynamicTest("Multiply Test", () -> assertEquals(4, Math.multiplyExact(2, 2))));
+    }
+
+    @TestFactory
+    Iterable<DynamicTest> dynamicTestsWithIterable() {
+        return Arrays.asList(DynamicTest.dynamicTest("Add test", () -> assertEquals(2, Math.addExact(1, 1))), DynamicTest.dynamicTest("Multiply Test", () -> assertEquals(4, Math.multiplyExact(2, 2))));
+    }
+
+    @TestFactory
+    Iterator<DynamicTest> dynamicTestsWithIterator() {
+        return Arrays.asList(DynamicTest.dynamicTest("Add test", () -> assertEquals(2, Math.addExact(1, 1))), DynamicTest.dynamicTest("Multiply Test", () -> assertEquals(4, Math.multiplyExact(2, 2))))
+            .iterator();
+    }
+
+    @TestFactory
+    Stream<DynamicTest> dynamicTestsFromIntStream() {
+        return IntStream.iterate(0, n -> n + 2)
+            .limit(10)
+            .mapToObj(n -> DynamicTest.dynamicTest("test" + n, () -> assertTrue(n % 2 == 0)));
+    }
+
+    @TestFactory
+    Stream<DynamicTest> dynamicTestsFromStream() {
+
+        // sample input and output
+        List<String> inputList = Arrays.asList("www.somedomain.com", "www.anotherdomain.com", "www.yetanotherdomain.com");
+        List<String> outputList = Arrays.asList("154.174.10.56", "211.152.104.132", "178.144.120.156");
+
+        // input generator that generates inputs using inputList
+        Iterator<String> inputGenerator = inputList.iterator();
+
+        // a display name generator that creates a different name based on the input
+        Function<String, String> displayNameGenerator = (input) -> "Resolving: " + input;
+
+        // the test executor, which actually has the logic of how to execute the test case
+        DomainNameResolver resolver = new DomainNameResolver();
+        ThrowingConsumer<String> testExecutor = (input) -> {
+            int id = inputList.indexOf(input);
+            assertEquals(outputList.get(id), resolver.resolveDomain(input));
+        };
+
+        // combine everything and return a Stream of DynamicTest
+        return DynamicTest.stream(inputGenerator, displayNameGenerator, testExecutor);
+    }
+
+    @TestFactory
+    Stream<DynamicTest> dynamicTestsFromStreamInJava8() {
+
+        DomainNameResolver resolver = new DomainNameResolver();
+
+        List<String> inputList = Arrays.asList("www.somedomain.com", "www.anotherdomain.com", "www.yetanotherdomain.com");
+        List<String> outputList = Arrays.asList("154.174.10.56", "211.152.104.132", "178.144.120.156");
+
+        return inputList.stream()
+            .map(dom -> DynamicTest.dynamicTest("Resolving: " + dom, () -> {
+                int id = inputList.indexOf(dom);
+                assertEquals(outputList.get(id), resolver.resolveDomain(dom));
+            }));
+
+    }
+
+    @TestFactory
+    Stream<DynamicTest> dynamicTestsForEmployeeWorkflows() {
+        List<Employee> inputList = Arrays.asList(new Employee(1, "Fred"), new Employee(2), new Employee(3, "John"));
+
+        EmployeeDao dao = new EmployeeDao();
+        Stream<DynamicTest> saveEmployeeStream = inputList.stream()
+            .map(emp -> DynamicTest.dynamicTest("saveEmployee: " + emp.toString(), () -> {
+                Employee returned = dao.save(emp.getId());
+                assertEquals(returned.getId(), emp.getId());
+            }));
+
+        Stream<DynamicTest> saveEmployeeWithFirstNameStream = inputList.stream()
+            .filter(emp -> !emp.getFirstName()
+                .isEmpty())
+            .map(emp -> DynamicTest.dynamicTest("saveEmployeeWithName" + emp.toString(), () -> {
+                Employee returned = dao.save(emp.getId(), emp.getFirstName());
+                assertEquals(returned.getId(), emp.getId());
+                assertEquals(returned.getFirstName(), emp.getFirstName());
+            }));
+
+        return Stream.concat(saveEmployeeStream, saveEmployeeWithFirstNameStream);
+    }
+
+    class DomainNameResolver {
+
+        private Map<String, String> ipByDomainName = new HashMap<>();
+
+        DomainNameResolver() {
+            this.ipByDomainName.put("www.somedomain.com", "154.174.10.56");
+            this.ipByDomainName.put("www.anotherdomain.com", "211.152.104.132");
+            this.ipByDomainName.put("www.yetanotherdomain.com", "178.144.120.156");
+        }
+
+        public String resolveDomain(String domainName) {
+            return ipByDomainName.get(domainName);
+        }
+    }
+
+}
@@ -0,0 +1,50 @@
+package com.baeldung;
+
+import java.sql.SQLException;
+
+import org.apache.logging.log4j.Logger;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+
+import com.baeldung.extensions.EmployeeDaoParameterResolver;
+import com.baeldung.extensions.EmployeeDatabaseSetupExtension;
+import com.baeldung.extensions.EnvironmentExtension;
+import com.baeldung.extensions.IgnoreFileNotFoundExceptionExtension;
+import com.baeldung.extensions.LoggingExtension;
+import com.baeldung.helpers.Employee;
+import com.baeldung.helpers.EmployeeJdbcDao;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+@ExtendWith({ EnvironmentExtension.class, EmployeeDatabaseSetupExtension.class, EmployeeDaoParameterResolver.class })
+@ExtendWith(LoggingExtension.class)
+@ExtendWith(IgnoreFileNotFoundExceptionExtension.class)
+public class EmployeesTest {
+
+    private EmployeeJdbcDao employeeDao;
+
+    private Logger logger;
+
+    public EmployeesTest(EmployeeJdbcDao employeeDao) {
+        this.employeeDao = employeeDao;
+    }
+
+    @Test
+    public void whenAddEmployee_thenGetEmployee() throws SQLException {
+        Employee emp = new Employee(1, "john");
+        employeeDao.add(emp);
+        assertEquals(1, employeeDao.findAll()
+            .size());
+    }
+
+    @Test
+    public void whenGetEmployees_thenEmptyList() throws SQLException {
+        assertEquals(0, employeeDao.findAll()
+            .size());
+    }
+
+    public void setLogger(Logger logger) {
+        this.logger = logger;
+    }
+
+}
@@ -0,0 +1,25 @@
+package com.baeldung;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+import org.junit.jupiter.api.Test;
+
+public class ExceptionUnitTest {
+
+    @Test
+    void shouldThrowException() {
+        Throwable exception = assertThrows(UnsupportedOperationException.class, () -> {
+            throw new UnsupportedOperationException("Not supported");
+        });
+        assertEquals(exception.getMessage(), "Not supported");
+    }
+
+    @Test
+    void assertThrowsException() {
+        String str = null;
+        assertThrows(IllegalArgumentException.class, () -> {
+            Integer.valueOf(str);
+        });
+    }
+}
@@ -0,0 +1,33 @@
+package com.baeldung;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.util.Arrays;
+import java.util.List;
+
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+class FirstUnitTest {
+
+    @Test
+    void lambdaExpressions() {
+        List<Integer> numbers = Arrays.asList(1, 2, 3);
+        assertTrue(numbers.stream()
+            .mapToInt(i -> i)
+            .sum() > 5, "Sum should be greater than 5");
+    }
+
+    @Disabled("test to show MultipleFailuresError")
+    @Test
+    void groupAssertions() {
+        int[] numbers = { 0, 1, 2, 3, 4 };
+        assertAll("numbers", () -> assertEquals(numbers[0], 1), () -> assertEquals(numbers[3], 3), () -> assertEquals(numbers[4], 1));
+    }
+
+    @Test
+    @Disabled
+    void disabledTest() {
+        assertTrue(false);
+    }
+}
@@ -0,0 +1,50 @@
+package com.baeldung;
+
+import java.util.logging.Logger;
+
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+//@RunWith(JUnitPlatform.class)
+public class JUnit5NewFeaturesUnitTest {
+
+    private static final Logger log = Logger.getLogger(JUnit5NewFeaturesUnitTest.class.getName());
+
+    @BeforeAll
+    static void setup() {
+        log.info("@BeforeAll - executes once before all test methods in this class");
+    }
+
+    @BeforeEach
+    void init() {
+        log.info("@BeforeEach - executes before each test method in this class");
+    }
+
+    @DisplayName("Single test successful")
+    @Test
+    void testSingleSuccessTest() {
+        log.info("Success");
+
+    }
+
+    @Test
+    @Disabled("Not implemented yet.")
+    void testShowSomething() {
+    }
+
+    @AfterEach
+    void tearDown() {
+        log.info("@AfterEach - executed after each test method.");
+    }
+
+    @AfterAll
+    static void done() {
+        log.info("@AfterAll - executed after all test methods.");
+    }
+
+}
@@ -0,0 +1,39 @@
+package com.baeldung;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Stream;
+
+import org.junit.jupiter.api.DynamicTest;
+import org.junit.jupiter.api.TestFactory;
+
+public class LiveTest {
+
+    private List<String> in = new ArrayList<>(Arrays.asList("Hello", "Yes", "No"));
+    private List<String> out = new ArrayList<>(Arrays.asList("Cześć", "Tak", "Nie"));
+
+    @TestFactory
+    public Stream<DynamicTest> translateDynamicTestsFromStream() {
+
+        return in.stream()
+            .map(word -> DynamicTest.dynamicTest("Test translate " + word, () -> {
+                int id = in.indexOf(word);
+                assertEquals(out.get(id), translate(word));
+            }));
+    }
+
+    private String translate(String word) {
+        if ("Hello".equalsIgnoreCase(word)) {
+            return "Cześć";
+        } else if ("Yes".equalsIgnoreCase(word)) {
+            return "Tak";
+        } else if ("No".equalsIgnoreCase(word)) {
+            return "Nie";
+        }
+        return "Error";
+    }
+
+}
@@ -0,0 +1,81 @@
+package com.baeldung;
+
+import java.util.EmptyStackException;
+import java.util.Stack;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+
+public class NestedUnitTest {
+    Stack<Object> stack;
+    boolean isRun = false;
+
+    @Test
+    @DisplayName("is instantiated with new Stack()")
+    void isInstantiatedWithNew() {
+        new Stack<Object>();
+    }
+
+    @Nested
+    @DisplayName("when new")
+    class WhenNew {
+
+        @BeforeEach
+        void init() {
+            stack = new Stack<Object>();
+        }
+
+        @Test
+        @DisplayName("is empty")
+        void isEmpty() {
+            Assertions.assertTrue(stack.isEmpty());
+        }
+
+        @Test
+        @DisplayName("throws EmptyStackException when popped")
+        void throwsExceptionWhenPopped() {
+            Assertions.assertThrows(EmptyStackException.class, () -> stack.pop());
+        }
+
+        @Test
+        @DisplayName("throws EmptyStackException when peeked")
+        void throwsExceptionWhenPeeked() {
+            Assertions.assertThrows(EmptyStackException.class, () -> stack.peek());
+        }
+
+        @Nested
+        @DisplayName("after pushing an element")
+        class AfterPushing {
+
+            String anElement = "an element";
+
+            @BeforeEach
+            void init() {
+                stack.push(anElement);
+            }
+
+            @Test
+            @DisplayName("it is no longer empty")
+            void isEmpty() {
+                Assertions.assertFalse(stack.isEmpty());
+            }
+
+            @Test
+            @DisplayName("returns the element when popped and is empty")
+            void returnElementWhenPopped() {
+                Assertions.assertEquals(anElement, stack.pop());
+                Assertions.assertTrue(stack.isEmpty());
+            }
+
+            @Test
+            @DisplayName("returns the element when peeked but remains not empty")
+            void returnElementWhenPeeked() {
+                Assertions.assertEquals(anElement, stack.peek());
+                Assertions.assertFalse(stack.isEmpty());
+            }
+        }
+    }
+}
@@ -0,0 +1,52 @@
+package com.baeldung;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.RepeatedTest;
+import org.junit.jupiter.api.RepetitionInfo;
+import org.junit.jupiter.api.TestInfo;
+
+public class RepeatedTestExample {
+
+    @BeforeEach
+    void beforeEachTest() {
+        System.out.println("Before Each Test");
+    }
+
+    @AfterEach
+    void afterEachTest() {
+        System.out.println("After Each Test");
+        System.out.println("=====================");
+    }
+
+    @RepeatedTest(3)
+    void repeatedTest(TestInfo testInfo) {
+        System.out.println("Executing repeated test");
+        assertEquals(2, Math.addExact(1, 1), "1 + 1 should equal 2");
+    }
+
+    @RepeatedTest(value = 3, name = RepeatedTest.LONG_DISPLAY_NAME)
+    void repeatedTestWithLongName() {
+        System.out.println("Executing repeated test with long name");
+        assertEquals(2, Math.addExact(1, 1), "1 + 1 should equal 2");
+    }
+
+    @RepeatedTest(value = 3, name = RepeatedTest.SHORT_DISPLAY_NAME)
+    void repeatedTestWithShortName() {
+        System.out.println("Executing repeated test with long name");
+        assertEquals(2, Math.addExact(1, 1), "1 + 1 should equal 2");
+    }
+
+    @RepeatedTest(value = 3, name = "Custom name {currentRepetition}/{totalRepetitions}")
+    void repeatedTestWithCustomDisplayName() {
+        assertEquals(2, Math.addExact(1, 1), "1 + 1 should equal 2");
+    }
+
+    @RepeatedTest(3)
+    void repeatedTestWithRepetitionInfo(RepetitionInfo repetitionInfo) {
+        System.out.println("Repetition #" + repetitionInfo.getCurrentRepetition());
+        assertEquals(3, repetitionInfo.getTotalRepetitions());
+    }
+}
@@ -0,0 +1,11 @@
+package com.baeldung;
+
+public final class StringUtils {
+
+    public static Double convertToDouble(String str) {
+        if (str == null) {
+            return null;
+        }
+        return Double.valueOf(str);
+    }
+}
@@ -0,0 +1,16 @@
+package com.baeldung;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+
+@Tag("Test case")
+public class TaggedUnitTest {
+
+    @Test
+    @Tag("Method")
+    void testMethod() {
+        assertEquals(2 + 2, 4);
+    }
+}
@@ -0,0 +1,39 @@
+package com.baeldung;
+
+import org.junit.platform.launcher.LauncherDiscoveryRequest;
+import org.junit.platform.launcher.TestExecutionListener;
+import org.junit.platform.launcher.TestPlan;
+import org.junit.platform.launcher.core.LauncherDiscoveryRequestBuilder;
+import org.junit.platform.launcher.core.LauncherFactory;
+import org.junit.platform.launcher.listeners.SummaryGeneratingListener;
+
+import static org.junit.platform.engine.discovery.DiscoverySelectors.selectClass;
+
+import java.io.PrintWriter;
+
+import org.junit.platform.launcher.Launcher;
+
+public class TestLauncher {
+    public static void main(String[] args) {
+
+        //@formatter:off
+        LauncherDiscoveryRequest request = LauncherDiscoveryRequestBuilder.request()
+                .selectors(selectClass("com.baeldung.EmployeesTest"))
+                .configurationParameter("junit.conditions.deactivate", "com.baeldung.extensions.*")
+                .configurationParameter("junit.extensions.autodetection.enabled", "true")
+                .build();
+        
+        //@formatter:on
+
+        TestPlan plan = LauncherFactory.create()
+            .discover(request);
+        Launcher launcher = LauncherFactory.create();
+        SummaryGeneratingListener summaryGeneratingListener = new SummaryGeneratingListener();
+        launcher.execute(request, new TestExecutionListener[] { summaryGeneratingListener });
+        launcher.execute(request);
+
+        summaryGeneratingListener.getSummary()
+            .printTo(new PrintWriter(System.out));
+
+    }
+}
@@ -0,0 +1,25 @@
+package com.baeldung.extensions;
+
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.junit.jupiter.api.extension.ParameterContext;
+import org.junit.jupiter.api.extension.ParameterResolutionException;
+import org.junit.jupiter.api.extension.ParameterResolver;
+
+import com.baeldung.helpers.EmployeeJdbcDao;
+import com.baeldung.helpers.JdbcConnectionUtil;
+
+public class EmployeeDaoParameterResolver implements ParameterResolver {
+
+    @Override
+    public boolean supportsParameter(ParameterContext parameterContext, ExtensionContext extensionContext) throws ParameterResolutionException {
+        return parameterContext.getParameter()
+            .getType()
+            .equals(EmployeeJdbcDao.class);
+    }
+
+    @Override
+    public Object resolveParameter(ParameterContext parameterContext, ExtensionContext extensionContext) throws ParameterResolutionException {
+        return new EmployeeJdbcDao(JdbcConnectionUtil.getConnection());
+    }
+
+}
@@ -0,0 +1,46 @@
+package com.baeldung.extensions;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.sql.Savepoint;
+
+import org.junit.jupiter.api.extension.AfterAllCallback;
+import org.junit.jupiter.api.extension.AfterEachCallback;
+import org.junit.jupiter.api.extension.BeforeAllCallback;
+import org.junit.jupiter.api.extension.BeforeEachCallback;
+import org.junit.jupiter.api.extension.ExtensionContext;
+
+import com.baeldung.helpers.EmployeeJdbcDao;
+import com.baeldung.helpers.JdbcConnectionUtil;
+
+public class EmployeeDatabaseSetupExtension implements BeforeAllCallback, AfterAllCallback, BeforeEachCallback, AfterEachCallback {
+
+    private Connection con = JdbcConnectionUtil.getConnection();
+    private EmployeeJdbcDao employeeDao = new EmployeeJdbcDao(con);
+    private Savepoint savepoint;
+
+    @Override
+    public void afterAll(ExtensionContext context) throws SQLException {
+        if (con != null) {
+            con.close();
+        }
+    }
+
+    @Override
+    public void beforeAll(ExtensionContext context) throws SQLException {
+        employeeDao.createTable();
+
+    }
+
+    @Override
+    public void afterEach(ExtensionContext context) throws SQLException {
+        con.rollback(savepoint);
+    }
+
+    @Override
+    public void beforeEach(ExtensionContext context) throws SQLException {
+        con.setAutoCommit(false);
+        savepoint = con.setSavepoint("before");
+    }
+
+}
@@ -0,0 +1,27 @@
+package com.baeldung.extensions;
+
+import java.io.IOException;
+import java.util.Properties;
+
+import org.junit.jupiter.api.extension.ConditionEvaluationResult;
+import org.junit.jupiter.api.extension.ExecutionCondition;
+import org.junit.jupiter.api.extension.ExtensionContext;
+
+public class EnvironmentExtension implements ExecutionCondition {
+
+    @Override
+    public ConditionEvaluationResult evaluateExecutionCondition(ExtensionContext context) {
+        Properties props = new Properties();
+
+        try {
+            props.load(EnvironmentExtension.class.getResourceAsStream("application.properties"));
+            String env = props.getProperty("env");
+            if ("qa".equalsIgnoreCase(env)) {
+                return ConditionEvaluationResult.disabled("Test disabled on QA environment");
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return ConditionEvaluationResult.enabled("Test enabled on QA environment");
+    }
+}
@@ -0,0 +1,23 @@
+package com.baeldung.extensions;
+
+import java.io.FileNotFoundException;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.junit.jupiter.api.extension.TestExecutionExceptionHandler;
+
+public class IgnoreFileNotFoundExceptionExtension implements TestExecutionExceptionHandler {
+
+    Logger logger = LogManager.getLogger(IgnoreFileNotFoundExceptionExtension.class);
+
+    @Override
+    public void handleTestExecutionException(ExtensionContext context, Throwable throwable) throws Throwable {
+
+        if (throwable instanceof FileNotFoundException) {
+            logger.error("File not found:" + throwable.getMessage());
+            return;
+        }
+        throw throwable;
+    }
+}
@@ -0,0 +1,18 @@
+package com.baeldung.extensions;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.junit.jupiter.api.extension.TestInstancePostProcessor;
+
+public class LoggingExtension implements TestInstancePostProcessor {
+
+    @Override
+    public void postProcessTestInstance(Object testInstance, ExtensionContext context) throws Exception {
+        Logger logger = LogManager.getLogger(testInstance.getClass());
+        testInstance.getClass()
+            .getMethod("setLogger", Logger.class)
+            .invoke(testInstance, logger);
+    }
+
+}
@@ -0,0 +1,38 @@
+package com.baeldung.helpers;
+
+public class Employee {
+
+    private long id;
+    private String firstName;
+
+    public Employee(long id) {
+        this.id = id;
+        this.firstName = "";
+    }
+
+    public Employee(long id, String firstName) {
+        this.id = id;
+        this.firstName = firstName;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    @Override
+    public String toString() {
+        return "Employee [id=" + id + ", firstName=" + firstName + "]";
+    }
+}
@@ -0,0 +1,16 @@
+package com.baeldung.helpers;
+
+public class EmployeeDao {
+
+    public Employee save(long id) {
+        return new Employee(id);
+    }
+
+    public Employee save(long id, String firstName) {
+        return new Employee(id, firstName);
+    }
+
+    public Employee update(Employee employee) {
+        return employee;
+    }
+}
@@ -0,0 +1,51 @@
+package com.baeldung.helpers;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+public class EmployeeJdbcDao {
+
+    private Connection con;
+
+    public EmployeeJdbcDao(Connection con) {
+        this.con = con;
+    }
+
+    public void createTable() throws SQLException {
+        String createQuery = "CREATE TABLE employees(id long primary key, firstName varchar(50))";
+        PreparedStatement pstmt = con.prepareStatement(createQuery);
+
+        pstmt.execute();
+    }
+
+    public void add(Employee emp) throws SQLException {
+        String insertQuery = "INSERT INTO employees(id, firstName) VALUES(?,?)";
+        PreparedStatement pstmt = con.prepareStatement(insertQuery);
+        pstmt.setLong(1, emp.getId());
+        pstmt.setString(2, emp.getFirstName());
+
+        pstmt.executeUpdate();
+
+    }
+
+    public List<Employee> findAll() throws SQLException {
+        List<Employee> employees = new ArrayList<>();
+        String query = "SELECT * FROM employees";
+        PreparedStatement pstmt = con.prepareStatement(query);
+
+        ResultSet rs = pstmt.executeQuery();
+        while (rs.next()) {
+            Employee emp = new Employee(rs.getLong("id"), rs.getString("firstName"));
+            employees.add(emp);
+        }
+
+        return employees;
+    }
+}
@@ -0,0 +1,32 @@
+package com.baeldung.helpers;
+
+import java.io.IOException;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+import java.util.Properties;
+
+public class JdbcConnectionUtil {
+
+    private static Connection con;
+
+    public static Connection getConnection() {
+        if (con == null) {
+            try {
+                Properties props = new Properties();
+                props.load(JdbcConnectionUtil.class.getResourceAsStream("jdbc.properties"));
+                Class.forName(props.getProperty("jdbc.driver"));
+                con = DriverManager.getConnection(props.getProperty("jdbc.url"), props.getProperty("jdbc.user"), props.getProperty("jdbc.password"));
+                return con;
+            } catch (IOException exc) {
+                exc.printStackTrace();
+            } catch (ClassNotFoundException exc) {
+                exc.printStackTrace();
+            } catch (SQLException exc) {
+                exc.printStackTrace();
+            }
+            return null;
+        }
+        return con;
+    }
+}
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2015-2016 the original author or authors.
+ *
+ * All rights reserved. This program and the accompanying materials are
+ * made available under the terms of the Eclipse Public License v1.0 which
+ * accompanies this distribution and is available at
+ *
+ * http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package com.baeldung.junit5.mockito;
+
+import static org.mockito.Mockito.mock;
+
+import java.lang.reflect.Parameter;
+
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.junit.jupiter.api.extension.ExtensionContext.Namespace;
+import org.junit.jupiter.api.extension.ExtensionContext.Store;
+import org.junit.jupiter.api.extension.ParameterContext;
+import org.junit.jupiter.api.extension.ParameterResolver;
+import org.junit.jupiter.api.extension.TestInstancePostProcessor;
+import org.mockito.MockitoAnnotations;
+import org.mockito.Mock;
+
+/**
+ * {@code MockitoExtension} showcases the {@link TestInstancePostProcessor}
+ * and {@link ParameterResolver} extension APIs of JUnit 5 by providing
+ * dependency injection support at the field level and at the method parameter
+ * level via Mockito 2.x's {@link Mock @Mock} annotation.
+ *
+ * @since 5.0
+ */
+public class MockitoExtension implements TestInstancePostProcessor, ParameterResolver {
+
+    @Override
+    public void postProcessTestInstance(Object testInstance, ExtensionContext context) {
+        MockitoAnnotations.initMocks(testInstance);
+    }
+
+    @Override
+    public boolean supportsParameter(ParameterContext parameterContext, ExtensionContext extensionContext) {
+        return parameterContext.getParameter().isAnnotationPresent(Mock.class);
+    }
+
+    @Override
+    public Object resolveParameter(ParameterContext parameterContext, ExtensionContext extensionContext) {
+        return getMock(parameterContext.getParameter(), extensionContext);
+    }
+
+    private Object getMock(Parameter parameter, ExtensionContext extensionContext) {
+        Class<?> mockType = parameter.getType();
+        Store mocks = extensionContext.getStore(Namespace.create(MockitoExtension.class, mockType));
+        String mockName = getMockName(parameter);
+
+        if (mockName != null) {
+            return mocks.getOrComputeIfAbsent(mockName, key -> mock(mockType, mockName));
+        }
+        else {
+            return mocks.getOrComputeIfAbsent(mockType.getCanonicalName(), key -> mock(mockType));
+        }
+    }
+
+    private String getMockName(Parameter parameter) {
+        String explicitMockName = parameter.getAnnotation(Mock.class).name().trim();
+        if (!explicitMockName.isEmpty()) {
+            return explicitMockName;
+        }
+        else if (parameter.isNamePresent()) {
+            return parameter.getName();
+        }
+        return null;
+    }
+
+}
@@ -0,0 +1,122 @@
+package com.baeldung.junit5.mockito;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.fail;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.junit.platform.runner.JUnitPlatform;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.mockito.invocation.InvocationOnMock;
+import org.mockito.stubbing.Answer;
+
+import com.baeldung.junit5.mockito.repository.MailClient;
+import com.baeldung.junit5.mockito.repository.SettingRepository;
+import com.baeldung.junit5.mockito.repository.UserRepository;
+import com.baeldung.junit5.mockito.service.DefaultUserService;
+import com.baeldung.junit5.mockito.service.Errors;
+import com.baeldung.junit5.mockito.service.UserService;
+
+@RunWith(JUnitPlatform.class)
+@ExtendWith(MockitoExtension.class)
+public class UserServiceUnitTest {
+    
+    UserService userService;
+    @Mock UserRepository userRepository;
+    
+    User user;
+    
+    @BeforeEach
+    void init(@Mock SettingRepository settingRepository, @Mock MailClient mailClient) {
+        userService = new DefaultUserService(userRepository, settingRepository, mailClient);
+        when(settingRepository.getUserMinAge()).thenReturn(10);
+        when(settingRepository.getUserNameMinLength()).thenReturn(4);
+        when(userRepository.isUsernameAlreadyExists(any(String.class))).thenReturn(false);
+    }
+    
+    @Test
+    void givenValidUser_whenSaveUser_thenSucceed(@Mock MailClient mailClient) {
+        // Given
+        user = new User("Jerry", 12);
+        when(userRepository.insert(any(User.class))).then(new Answer<User>() {
+            int sequence = 1;
+            
+            @Override
+            public User answer(InvocationOnMock invocation) throws Throwable {
+                User user = (User) invocation.getArgument(0);
+                user.setId(sequence++);
+                return user;
+            }
+        });
+        
+        // When
+        User insertedUser = userService.register(user);
+        
+        // Then
+        verify(userRepository).insert(user);
+        Assertions.assertNotNull(user.getId());
+        verify(mailClient).sendUserRegistrationMail(insertedUser);
+    }
+
+    @Test
+    void givenShortName_whenSaveUser_thenGiveShortUsernameError() {
+        // Given
+        user = new User("tom", 12);
+        
+        // When
+        try {
+            userService.register(user);
+            fail("Should give an error");
+        } catch(Exception ex) {
+            assertEquals(ex.getMessage(), Errors.USER_NAME_SHORT);
+        }
+        
+        // Then
+        verify(userRepository, never()).insert(user);
+    }
+    
+    @Test
+    void givenSmallAge_whenSaveUser_thenGiveYoungUserError() {
+        // Given
+        user = new User("jerry", 3);
+        
+        // When
+        try {
+            userService.register(user);
+            fail("Should give an error");
+        } catch(Exception ex) {
+            assertEquals(ex.getMessage(), Errors.USER_AGE_YOUNG);
+        }
+        
+        // Then
+        verify(userRepository, never()).insert(user);
+    }
+    
+    @Test
+    void givenUserWithExistingName_whenSaveUser_thenGiveUsernameAlreadyExistsError() {
+        // Given
+        user = new User("jerry", 12);
+        Mockito.reset(userRepository);
+        when(userRepository.isUsernameAlreadyExists(any(String.class))).thenReturn(true);
+        
+        // When
+        try {
+            userService.register(user);
+            fail("Should give an error");
+        } catch(Exception ex) {
+            assertEquals(ex.getMessage(), Errors.USER_NAME_DUPLICATE);
+        }
+        
+        // Then
+        verify(userRepository, never()).insert(user);
+    }
+    
+}
@@ -0,0 +1,23 @@
+package com.baeldung.migration.junit4;
+
+import org.junit.Ignore;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+
+import com.baeldung.migration.junit4.categories.Annotations;
+import com.baeldung.migration.junit4.categories.JUnit4Tests;
+
+@Category(value = { Annotations.class, JUnit4Tests.class })
+public class AnnotationTestExampleTest {
+    @Test(expected = Exception.class)
+    public void shouldRaiseAnException() throws Exception {
+        throw new Exception("This is my expected exception");
+    }
+
+    @Test(timeout = 1)
+    @Ignore
+    public void shouldFailBecauseTimeout() throws InterruptedException {
+        Thread.sleep(10);
+    }
+
+}
@@ -0,0 +1,28 @@
+package com.baeldung.migration.junit4;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.Arrays;
+import java.util.List;
+
+import org.junit.Ignore;
+import org.junit.Test;
+
+public class AssertionsExampleTest {
+    @Test
+    @Ignore
+    public void shouldFailBecauseTheNumbersAreNotEqualld() {
+        assertEquals("Numbers are not equal!", 2, 3);
+    }
+
+    @Test
+    public void shouldAssertAllTheGroup() {
+        List<Integer> list = Arrays.asList(1, 2, 3);
+        assertEquals("List is not incremental", list.get(0)
+            .intValue(), 1);
+        assertEquals("List is not incremental", list.get(1)
+            .intValue(), 2);
+        assertEquals("List is not incremental", list.get(2)
+            .intValue(), 3);
+    }
+}
@@ -0,0 +1,18 @@
+package com.baeldung.migration.junit4;
+
+import org.junit.Rule;
+import org.junit.Test;
+
+import com.baeldung.migration.junit4.rules.TraceUnitTestRule;
+
+public class RuleExampleTest {
+
+    @Rule
+    public final TraceUnitTestRule traceRuleTests = new TraceUnitTestRule();
+
+    @Test
+    public void whenTracingTests() {
+        System.out.println("This is my test");
+        /*...*/
+    }
+}
@@ -0,0 +1,5 @@
+package com.baeldung.migration.junit4.categories;
+
+public interface Annotations {
+
+}
@@ -0,0 +1,5 @@
+package com.baeldung.migration.junit4.categories;
+
+public interface JUnit4Tests {
+
+}
@@ -0,0 +1,35 @@
+package com.baeldung.migration.junit4.rules;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.junit.rules.TestRule;
+import org.junit.runner.Description;
+import org.junit.runners.model.MultipleFailureException;
+import org.junit.runners.model.Statement;
+
+public class TraceUnitTestRule implements TestRule {
+
+    @Override
+    public Statement apply(Statement base, Description description) {
+
+        return new Statement() {
+            @Override
+            public void evaluate() throws Throwable {
+                List<Throwable> errors = new ArrayList<Throwable>();
+
+                System.out.println("Starting test ... " + description.getMethodName());
+                try {
+                    base.evaluate();
+                } catch (Throwable e) {
+                    errors.add(e);
+                } finally {
+                    System.out.println("... test finished. " + description.getMethodName());
+                }
+
+                MultipleFailureException.assertEmpty(errors);
+            }
+        };
+    }
+
+}
@@ -0,0 +1,28 @@
+package com.baeldung.migration.junit5;
+
+import java.time.Duration;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+import org.junit.platform.runner.JUnitPlatform;
+import org.junit.runner.RunWith;
+
+@Tag("annotations")
+@Tag("junit5")
+@RunWith(JUnitPlatform.class)
+public class AnnotationTestExampleTest {
+    @Test
+    public void shouldRaiseAnException() throws Exception {
+        Assertions.assertThrows(Exception.class, () -> {
+            throw new Exception("This is my expected exception");
+        });
+    }
+
+    @Test
+    @Disabled
+    public void shouldFailBecauseTimeout() throws InterruptedException {
+        Assertions.assertTimeout(Duration.ofMillis(1), () -> Thread.sleep(10));
+    }
+}
@@ -0,0 +1,40 @@
+package com.baeldung.migration.junit5;
+
+import java.util.Arrays;
+import java.util.List;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+import org.junit.platform.runner.JUnitPlatform;
+import org.junit.runner.RunWith;
+
+@RunWith(JUnitPlatform.class)
+public class AssertionsExampleTest {
+    @Test
+    @Disabled
+    public void shouldFailBecauseTheNumbersAreNotEqual() {
+        Assertions.assertEquals(2, 3, "Numbers are not equal!");
+    }
+
+    @Test
+    @Disabled
+    public void shouldFailBecauseItsNotTrue_overloading() {
+        Assertions.assertTrue(() -> {
+            return false;
+        }, () -> "It's not true!");
+    }
+
+    @Test
+    public void shouldAssertAllTheGroup() {
+        List<Integer> list = Arrays.asList(1, 2, 3);
+
+        Assertions.assertAll("List is not incremental", () -> Assertions.assertEquals(list.get(0)
+            .intValue(), 1), () -> Assertions.assertEquals(
+                list.get(1)
+                    .intValue(),
+                2),
+            () -> Assertions.assertEquals(list.get(2)
+                .intValue(), 3));
+    }
+}
@@ -0,0 +1,19 @@
+package com.baeldung.migration.junit5;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.junit.platform.runner.JUnitPlatform;
+import org.junit.runner.RunWith;
+
+import com.baeldung.migration.junit5.extensions.TraceUnitExtension;
+
+@RunWith(JUnitPlatform.class)
+@ExtendWith(TraceUnitExtension.class)
+public class RuleExampleTest {
+
+    @Test
+    public void whenTracingTests() {
+        System.out.println("This is my test");
+        /*...*/
+    }
+}
@@ -0,0 +1,19 @@
+package com.baeldung.migration.junit5.extensions;
+
+import org.junit.jupiter.api.extension.AfterEachCallback;
+import org.junit.jupiter.api.extension.BeforeEachCallback;
+import org.junit.jupiter.api.extension.ExtensionContext;
+
+public class TraceUnitExtension implements AfterEachCallback, BeforeEachCallback {
+
+    @Override
+    public void beforeEach(ExtensionContext context) throws Exception {
+        System.out.println("Starting test ... " + context.getDisplayName());
+    }
+
+    @Override
+    public void afterEach(ExtensionContext context) throws Exception {
+        System.out.println("... test finished. " + context.getDisplayName());
+    }
+
+}
@@ -0,0 +1,59 @@
+package com.baeldung.param;
+
+import java.util.Random;
+
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.junit.jupiter.api.extension.ParameterContext;
+import org.junit.jupiter.api.extension.ParameterResolutionException;
+import org.junit.jupiter.api.extension.ParameterResolver;
+
+public class InvalidPersonParameterResolver implements ParameterResolver {
+
+    /**
+     * The "bad" (invalid) data for testing purposes has to go somewhere, right?
+     */
+    public static Person[] INVALID_PERSONS = { new Person().setId(1L)
+        .setLastName("Ad_ams")
+        .setFirstName("Jill,"),
+            new Person().setId(2L)
+                .setLastName(",Baker")
+                .setFirstName(""),
+            new Person().setId(3L)
+                .setLastName(null)
+                .setFirstName(null),
+            new Person().setId(4L)
+                .setLastName("Daniel&")
+                .setFirstName("{Joseph}"),
+            new Person().setId(5L)
+                .setLastName("")
+                .setFirstName("English, Jane"),
+            new Person()/* .setId(6L).setLastName("Fontana").setFirstName("Enrique") */,
+            // TODO: ADD MORE DATA HERE
+    };
+
+    @Override
+    public Object resolveParameter(ParameterContext parameterContext, ExtensionContext extensionContext) throws ParameterResolutionException {
+        Object ret = null;
+        //
+        // Return a random, valid Person object if Person.class is the type of Parameter
+        /// to be resolved. Otherwise return null.
+        if (parameterContext.getParameter()
+            .getType() == Person.class) {
+            ret = INVALID_PERSONS[new Random().nextInt(INVALID_PERSONS.length)];
+        }
+        return ret;
+    }
+
+    @Override
+    public boolean supportsParameter(ParameterContext parameterContext, ExtensionContext extensionContext) throws ParameterResolutionException {
+        boolean ret = false;
+        //
+        // If the Parameter.type == Person.class, then we support it, otherwise, get outta here!
+        if (parameterContext.getParameter()
+            .getType() == Person.class) {
+            ret = true;
+        }
+        return ret;
+    }
+
+}
@@ -0,0 +1,43 @@
+package com.baeldung.param;
+
+/**
+ * Very simple Person entity.
+ * Use the Fluent-style interface to set properties.
+ * 
+ * @author J Steven Perry
+ *
+ */
+public class Person {
+
+    private Long id;
+    private String lastName;
+    private String firstName;
+
+    public Long getId() {
+        return id;
+    }
+
+    public Person setId(Long id) {
+        this.id = id;
+        return this;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public Person setLastName(String lastName) {
+        this.lastName = lastName;
+        return this;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public Person setFirstName(String firstName) {
+        this.firstName = firstName;
+        return this;
+    }
+
+}
@@ -0,0 +1,132 @@
+package com.baeldung.param;
+
+import java.util.Arrays;
+
+/**
+ * Somewhat contrived validation class to illustrate unit test
+ * concepts.
+ * 
+ * @author J Steven Perry
+ *
+ */
+public class PersonValidator {
+
+    /**
+     * Contrived checked exception to illustrate one possible
+     * way to handle validation errors (via a checked exception).
+     * 
+     * @author J Steven Perry
+     *
+     */
+    public static class ValidationException extends Exception {
+
+        /**
+         * 
+         */
+        private static final long serialVersionUID = -134518049431883102L;
+
+        // Probably should implement some more constructors, but don't want
+        /// to tarnish the lesson...
+
+        /**
+         * The one and only way to create this checked exception.
+         * 
+         * @param message
+         *          The message accompanying the exception. Should be meaningful.
+         */
+        public ValidationException(String message) {
+            super(message);
+
+        }
+
+    }
+
+    private static final String[] ILLEGAL_NAME_CHARACTERS = { ",", "_", "{", "}", "!" };
+
+    /**
+     * Validate the first name of the specified Person object.
+     * 
+     * @param person
+     *          The Person object to validate.
+     * 
+     * @return - returns true if the specified Person is valid
+     * 
+     * @throws ValidationException
+     *           - this Exception is thrown if any kind of validation error occurs.
+     */
+    public static boolean validateFirstName(Person person) throws ValidationException {
+        boolean ret = true;
+        // The validation rules go here.
+        // Naive: use simple ifs
+        if (person == null) {
+            throw new ValidationException("Person is null (not allowed)!");
+        }
+        if (person.getFirstName() == null) {
+            throw new ValidationException("Person FirstName is null (not allowed)!");
+        }
+        if (person.getFirstName()
+            .isEmpty()) {
+            throw new ValidationException("Person FirstName is an empty String (not allowed)!");
+        }
+        if (!isStringValid(person.getFirstName(), ILLEGAL_NAME_CHARACTERS)) {
+            throw new ValidationException("Person FirstName (" + person.getFirstName() + ") may not contain any of the following characters: " + Arrays.toString(ILLEGAL_NAME_CHARACTERS) + "!");
+        }
+        return ret;
+    }
+
+    /**
+     * Validate the last name of the specified Person object. Looks the same as first
+     * name? Look closer. Just kidding. It's the same. But real world code can (and will) diverge.
+     * 
+     * @param person
+     *          The Person object to validate.
+     * 
+     * @return - returns true if the specified Person is valid
+     * 
+     * @throws ValidationException
+     *           - this Exception is thrown if any kind of validation error occurs.
+     */
+    public static boolean validateLastName(Person person) throws ValidationException {
+        boolean ret = true;
+        // The validation rules go here.
+        // Naive: use simple ifs
+        if (person == null) {
+            throw new ValidationException("Person is null (not allowed)!");
+        }
+        if (person.getFirstName() == null) {
+            throw new ValidationException("Person FirstName is null (not allowed)!");
+        }
+        if (person.getFirstName()
+            .isEmpty()) {
+            throw new ValidationException("Person FirstName is an empty String (not allowed)!");
+        }
+        if (!isStringValid(person.getFirstName(), ILLEGAL_NAME_CHARACTERS)) {
+            throw new ValidationException("Person LastName (" + person.getLastName() + ") may not contain any of the following characters: " + Arrays.toString(ILLEGAL_NAME_CHARACTERS) + "!");
+        }
+        return ret;
+    }
+
+    /**
+     * Validates the specified name. If it contains any of the illegalCharacters,
+     * this method returns false (indicating the name is illegal). Otherwise it returns true.
+     * 
+     * @param candidate
+     *          The candidate String to validate
+     * 
+     * @param illegalCharacters
+     *          The characters the String is not allowed to have
+     * 
+     * @return - boolean - true if the name is valid, false otherwise.
+     */
+    private static boolean isStringValid(String candidate, String[] illegalCharacters) {
+        boolean ret = true;
+        for (String illegalChar : illegalCharacters) {
+            if (candidate.contains(illegalChar)) {
+                ret = false;
+                break;
+            }
+        }
+        return ret;
+    }
+
+}
@@ -0,0 +1,102 @@
+package com.baeldung.param;
+
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.fail;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.RepeatedTest;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.junit.platform.runner.JUnitPlatform;
+import org.junit.runner.RunWith;
+
+@RunWith(JUnitPlatform.class)
+@DisplayName("Testing PersonValidator")
+public class PersonValidatorTest {
+
+    /**
+     * Nested class, uses ExtendWith
+     * {@link com.baeldung.param.ValidPersonParameterResolver ValidPersonParameterResolver}
+     * to feed Test methods with "good" data.
+     */
+    @Nested
+    @DisplayName("When using Valid data")
+    @ExtendWith(ValidPersonParameterResolver.class)
+    public class ValidData {
+
+        /**
+         * Repeat the test ten times, that way we have a good shot at
+         * running all of the data through at least once.
+         * 
+         * @param person
+         *          A valid Person object to validate.
+         */
+        @RepeatedTest(value = 10)
+        @DisplayName("All first names are valid")
+        public void validateFirstName(Person person) {
+            try {
+                assertTrue(PersonValidator.validateFirstName(person));
+            } catch (PersonValidator.ValidationException e) {
+                fail("Exception not expected: " + e.getLocalizedMessage());
+            }
+        }
+
+        /**
+         * Repeat the test ten times, that way we have a good shot at
+         * running all of the data through at least once.
+         * 
+         * @param person
+         *          A valid Person object to validate.
+         */
+        @RepeatedTest(value = 10)
+        @DisplayName("All last names are valid")
+        public void validateLastName(Person person) {
+            try {
+                assertTrue(PersonValidator.validateLastName(person));
+            } catch (PersonValidator.ValidationException e) {
+                fail("Exception not expected: " + e.getLocalizedMessage());
+            }
+        }
+
+    }
+
+    /**
+     * Nested class, uses ExtendWith
+     * {@link com.baeldung.param.InvalidPersonParameterResolver InvalidPersonParameterResolver}
+     * to feed Test methods with "bad" data.
+     */
+    @Nested
+    @DisplayName("When using Invalid data")
+    @ExtendWith(InvalidPersonParameterResolver.class)
+    public class InvalidData {
+
+        /**
+         * Repeat the test ten times, that way we have a good shot at
+         * running all of the data through at least once.
+         * 
+         * @param person
+         *          An invalid Person object to validate.
+         */
+        @RepeatedTest(value = 10)
+        @DisplayName("All first names are invalid")
+        public void validateFirstName(Person person) {
+            assertThrows(PersonValidator.ValidationException.class, () -> PersonValidator.validateFirstName(person));
+        }
+
+        /**
+         * Repeat the test ten times, that way we have a good shot at
+         * running all of the data through at least once.
+         * 
+         * @param person
+         *          An invalid Person object to validate.
+         */
+        @RepeatedTest(value = 10)
+        @DisplayName("All first names are invalid")
+        public void validateLastName(Person person) {
+            assertThrows(PersonValidator.ValidationException.class, () -> PersonValidator.validateLastName(person));
+        }
+
+    }
+
+}
@@ -0,0 +1,61 @@
+package com.baeldung.param;
+
+import java.util.Random;
+
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.junit.jupiter.api.extension.ParameterContext;
+import org.junit.jupiter.api.extension.ParameterResolutionException;
+import org.junit.jupiter.api.extension.ParameterResolver;
+
+public class ValidPersonParameterResolver implements ParameterResolver {
+
+    /**
+     * The "good" (valid) data for testing purposes has to go somewhere, right?
+     */
+    public static Person[] VALID_PERSONS = { new Person().setId(1L)
+        .setLastName("Adams")
+        .setFirstName("Jill"),
+            new Person().setId(2L)
+                .setLastName("Baker")
+                .setFirstName("James"),
+            new Person().setId(3L)
+                .setLastName("Carter")
+                .setFirstName("Samanta"),
+            new Person().setId(4L)
+                .setLastName("Daniels")
+                .setFirstName("Joseph"),
+            new Person().setId(5L)
+                .setLastName("English")
+                .setFirstName("Jane"),
+            new Person().setId(6L)
+                .setLastName("Fontana")
+                .setFirstName("Enrique"),
+            // TODO: ADD MORE DATA HERE
+    };
+
+    @Override
+    public Object resolveParameter(ParameterContext parameterContext, ExtensionContext extensionContext) throws ParameterResolutionException {
+        Object ret = null;
+        //
+        // Return a random, valid Person object if Person.class is the type of Parameter
+        /// to be resolved. Otherwise return null.
+        if (parameterContext.getParameter()
+            .getType() == Person.class) {
+            ret = VALID_PERSONS[new Random().nextInt(VALID_PERSONS.length)];
+        }
+        return ret;
+    }
+
+    @Override
+    public boolean supportsParameter(ParameterContext parameterContext, ExtensionContext extensionContext) throws ParameterResolutionException {
+        boolean ret = false;
+        //
+        // If the Parameter.type == Person.class, then we support it, otherwise, get outta here!
+        if (parameterContext.getParameter()
+            .getType() == Person.class) {
+            ret = true;
+        }
+        return ret;
+    }
+
+}
@@ -0,0 +1,12 @@
+package com.baeldung.suites;
+
+import org.junit.platform.runner.JUnitPlatform;
+import org.junit.platform.suite.api.SelectPackages;
+import org.junit.runner.RunWith;
+
+@RunWith(JUnitPlatform.class)
+@SelectPackages("com.baeldung")
+// @SelectClasses({AssertionTest.class, AssumptionTest.class, ExceptionTest.class})
+public class AllTests {
+
+}
@@ -0,0 +1 @@
+com.baeldung.extensions.EmployeeDaoParameterResolver
@@ -0,0 +1 @@
+env=dev
@@ -0,0 +1,5 @@
+#h2 db
+jdbc.driver=org.h2.Driver
+jdbc.url=jdbc:h2:mem:myDb;DB_CLOSE_DELAY=-1
+jdbc.user=sa
+jdbc.password=
@@ -0,0 +1,14 @@
+*.class
+
+.settings
+.project
+
+#folders#
+/target
+/src/main/webapp/WEB-INF/classes
+*/META-INF/*
+
+# Packaged files #
+*.jar
+*.war
+*.ear
@@ -0,0 +1,7 @@
+### Relevant articles
+
+- [Mockito’s Java 8 Features](http://www.baeldung.com/mockito-2-java-8)
+
+## Mockito 2 and Java 8 Tips
+
+Examples on how to leverage Java 8 new features with Mockito version 2
@@ -0,0 +1,59 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.baeldung</groupId>
+    <artifactId>mockito-2</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <packaging>jar</packaging>
+    <name>mockito-2-with-java8</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+        <relativePath>../</relativePath>
+    </parent>
+
+    <profiles>
+        <profile>
+            <id>integration</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-surefire-plugin</artifactId>
+                        <executions>
+                            <execution>
+                                <phase>integration-test</phase>
+                                <goals>
+                                    <goal>test</goal>
+                                </goals>
+                                <configuration>
+                                    <excludes>
+                                        <exclude>**/*LiveTest.java</exclude>
+                                    </excludes>
+                                    <includes>
+                                        <include>**/*IntegrationTest.java</include>
+                                    </includes>
+                                </configuration>
+                            </execution>
+                        </executions>
+                        <configuration>
+                            <systemPropertyVariables>
+                                <test.mime>json</test.mime>
+                            </systemPropertyVariables>
+                        </configuration>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+
+        <!-- testing -->
+        <mockito.version>2.8.9</mockito.version>
+    </properties>
+</project>
@@ -0,0 +1,20 @@
+package com.baeldung.mockito.java8;
+
+public class JobPosition {
+    private String title;
+    
+    public JobPosition() {}
+    
+    public JobPosition(String title) {
+        super();
+        this.title = title;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+}
@@ -0,0 +1,20 @@
+package com.baeldung.mockito.java8;
+
+import java.util.Optional;
+import java.util.stream.Stream;
+
+public interface JobService {
+    Optional<JobPosition> findCurrentJobPosition(Person person);
+
+    default boolean assignJobPosition(Person person, JobPosition jobPosition) {
+        if (!findCurrentJobPosition(person).isPresent()) {
+            person.setCurrentJobPosition(jobPosition);
+
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    Stream<JobPosition> listJobs(Person person);
+}
@@ -0,0 +1,28 @@
+package com.baeldung.mockito.java8;
+
+public class Person {
+    private String name;
+    private JobPosition currentJobPosition;
+    
+    public Person() {}
+    
+    public Person(String name) {
+        this.name = name;
+    }
+
+    public JobPosition getCurrentJobPosition() {
+        return currentJobPosition;
+    }
+
+    public void setCurrentJobPosition(JobPosition currentJobPosition) {
+        this.currentJobPosition = currentJobPosition;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}
@@ -0,0 +1,11 @@
+package com.baeldung.mockito.java8;
+
+import java.util.Optional;
+
+public interface UnemploymentService {
+
+    boolean personIsEntitledToUnemploymentSupport(Person person);
+
+    Optional<JobPosition> searchJob(Person person, String searchString); 
+
+}
@@ -0,0 +1,26 @@
+package com.baeldung.mockito.java8;
+
+import java.util.Optional;
+import java.util.stream.Stream;
+
+public class UnemploymentServiceImpl implements UnemploymentService {
+    private final JobService jobService;
+    
+    public UnemploymentServiceImpl(JobService jobService) {
+        this.jobService = jobService;
+    }
+
+    @Override
+    public boolean personIsEntitledToUnemploymentSupport(Person person) {
+        Optional<JobPosition> optional = jobService.findCurrentJobPosition(person);
+        
+        return !optional.isPresent();
+    }
+
+    @Override
+    public Optional<JobPosition> searchJob(Person person, String searchString) {
+        Stream<JobPosition> stream = jobService.listJobs(person);
+        
+        return stream.filter((j) -> j.getTitle().contains(searchString)).findFirst();
+    }
+}
@@ -0,0 +1,44 @@
+package com.baeldung.mockito.java8;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.when;
+
+import java.util.Optional;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.ArgumentMatchers;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+
+public class ArgumentMatcherWithLambdaUnitTest {
+
+    @InjectMocks
+    private UnemploymentServiceImpl unemploymentService;
+    
+    @Mock
+    private JobService jobService;
+
+    @Test
+    public void whenPersonWithJob_thenIsNotEntitled() {
+        Person peter = new Person("Peter");
+        Person linda = new Person("Linda");
+        
+        JobPosition teacher = new JobPosition("Teacher");
+
+        when(jobService.findCurrentJobPosition(
+                ArgumentMatchers.argThat((p) -> p.getName().equals("Peter")))
+             ).thenReturn(Optional.of(teacher));
+        
+        assertTrue(unemploymentService.personIsEntitledToUnemploymentSupport(linda));
+        assertFalse(unemploymentService.personIsEntitledToUnemploymentSupport(peter));
+    }
+
+    @Before
+    public void init() {
+        MockitoAnnotations.initMocks(this);
+    }
+}
@@ -0,0 +1,51 @@
+package com.baeldung.mockito.java8;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.*;
+
+import java.util.Optional;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.when;
+
+
+public class ArgumentMatcherWithoutLambdaUnitTest {
+
+    private class PeterArgumentMatcher implements ArgumentMatcher<Person> {
+
+        @Override
+        public boolean matches(Person p) {
+            return p
+              .getName()
+              .equals("Peter");
+        }
+    }
+
+    @InjectMocks
+    private UnemploymentServiceImpl unemploymentService;
+    
+    @Mock
+    private JobService jobService;
+
+    @Test
+    public void whenPersonWithJob_thenIsNotEntitled() {
+        Person peter = new Person("Peter");
+        Person linda = new Person("Linda");
+        
+        JobPosition teacher = new JobPosition("Teacher");
+
+        when(jobService.findCurrentJobPosition(
+                ArgumentMatchers.argThat(new PeterArgumentMatcher()))
+             ).thenReturn(Optional.of(teacher));
+        
+        assertTrue(unemploymentService.personIsEntitledToUnemploymentSupport(linda));
+        assertFalse(unemploymentService.personIsEntitledToUnemploymentSupport(peter));
+    }
+
+    @Before
+    public void init() {
+        MockitoAnnotations.initMocks(this);
+    }
+}
@@ -0,0 +1,46 @@
+package com.baeldung.mockito.java8;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.util.stream.Stream;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.when;
+
+public class CustomAnswerWithLambdaUnitTest {
+
+    @InjectMocks
+    private UnemploymentServiceImpl unemploymentService;
+
+    @Mock
+    private JobService jobService;
+
+    @Test
+    public void whenPersonWithJobHistory_thenSearchReturnsValue() {
+        Person peter = new Person("Peter");
+
+        assertEquals("Teacher", unemploymentService.searchJob(peter, "").get().getTitle());
+    }
+
+    @Test
+    public void whenPersonWithNoJobHistory_thenSearchReturnsEmpty() {
+        Person linda = new Person("Linda");
+
+        assertFalse(unemploymentService.searchJob(linda, "").isPresent());
+    }
+
+    @Before
+    public void init() {
+        MockitoAnnotations.initMocks(this);
+
+        when(jobService.listJobs(any(Person.class))).then((i) ->
+          Stream.of(new JobPosition("Teacher"))
+          .filter(p -> ((Person) i.getArgument(0)).getName().equals("Peter")));
+    }
+}
@@ -0,0 +1,61 @@
+package com.baeldung.mockito.java8;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.mockito.invocation.InvocationOnMock;
+import org.mockito.stubbing.Answer;
+
+import java.util.stream.Stream;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.when;
+
+
+public class CustomAnswerWithoutLambdaUnitTest {
+    
+    private class PersonAnswer implements Answer<Stream<JobPosition>> {
+
+        @Override
+        public Stream<JobPosition> answer(InvocationOnMock invocation) throws Throwable {
+            Person person = invocation.getArgument(0);
+            
+            if(person.getName().equals("Peter")) {
+                return Stream.<JobPosition>builder().add(new JobPosition("Teacher")).build();
+            } 
+            
+            return Stream.empty();
+        }
+    }
+    
+    @InjectMocks
+    private UnemploymentServiceImpl unemploymentService;
+    
+    @Mock
+    private JobService jobService;
+
+    @Test
+    public void whenPersonWithJobHistory_thenSearchReturnsValue() {
+        Person peter = new Person("Peter");
+        
+        assertEquals("Teacher", unemploymentService.searchJob(peter, "").get().getTitle());
+    }
+
+    @Test
+    public void whenPersonWithNoJobHistory_thenSearchReturnsEmpty() {
+        Person linda = new Person("Linda");
+
+        assertFalse(unemploymentService.searchJob(linda, "").isPresent());
+    }
+
+    @Before
+    public void init() {
+        MockitoAnnotations.initMocks(this);
+        
+        when(jobService.listJobs(any(Person.class))).then(new PersonAnswer());
+    }
+}
@@ -0,0 +1,44 @@
+package com.baeldung.mockito.java8;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.doCallRealMethod;
+import static org.mockito.Mockito.when;
+
+import java.util.Optional;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.mockito.MockitoAnnotations;
+
+public class JobServiceUnitTest {
+    @Mock
+    private JobService jobService;
+
+    @Test
+    public void givenDefaultMethod_whenCallRealMethod_thenNoExceptionIsRaised() {
+        Person person = new Person();
+
+        when(jobService.findCurrentJobPosition(person)).thenReturn(Optional.of(new JobPosition()));
+        doCallRealMethod().when(jobService).assignJobPosition(Mockito.any(Person.class), Mockito.any(JobPosition.class));
+
+        assertFalse(jobService.assignJobPosition(person, new JobPosition()));
+    }
+
+    @Test
+    public void givenReturnIsOfTypeOptional_whenDefaultValueIsReturned_thenValueIsEmpty() {
+        Person person = new Person();
+
+        when(jobService.findCurrentJobPosition(person)).thenReturn(Optional.empty());
+        doCallRealMethod().when(jobService).assignJobPosition(Mockito.any(Person.class), Mockito.any(JobPosition.class));
+
+        assertTrue(jobService.assignJobPosition(person, new JobPosition()));
+    }
+
+    @Before
+    public void init() {
+        MockitoAnnotations.initMocks(this);
+    }
+}
@@ -0,0 +1,62 @@
+package com.baeldung.mockito.java8;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Matchers.any;
+import static org.mockito.Mockito.when;
+
+import java.util.Optional;
+import java.util.stream.Stream;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+public class UnemploymentServiceImplUnitTest {
+    @Mock
+    private JobService jobService;
+
+    @InjectMocks
+    private UnemploymentServiceImpl unemploymentService;
+
+    @Test
+    public void givenReturnIsOfTypeOptional_whenMocked_thenValueIsEmpty() {
+        Person person = new Person();
+
+        when(jobService.findCurrentJobPosition(any(Person.class))).thenReturn(Optional.empty());
+
+        assertTrue(unemploymentService.personIsEntitledToUnemploymentSupport(person));
+    }
+
+    @Test
+    public void givenReturnIsOfTypeOptional_whenDefaultValueIsReturned_thenValueIsEmpty() {
+        Person person = new Person();
+
+        // This will fail when Mockito 1 is used
+        assertTrue(unemploymentService.personIsEntitledToUnemploymentSupport(person));
+    }
+
+    @Test
+    public void givenReturnIsOfTypeStream_whenMocked_thenValueIsEmpty() {
+        Person person = new Person();
+
+        when(jobService.listJobs(any(Person.class))).thenReturn(Stream.empty());
+
+        assertFalse(unemploymentService.searchJob(person, "").isPresent());
+    }
+
+    @Test
+    public void givenReturnIsOfTypeStream_whenDefaultValueIsReturned_thenValueIsEmpty() {
+        Person person = new Person();
+
+        // This will fail when Mockito 1 is used
+        assertFalse(unemploymentService.searchJob(person, "").isPresent());
+    }
+
+    @Before
+    public void init() {
+        MockitoAnnotations.initMocks(this);
+    }
+}
@@ -0,0 +1,13 @@
+*.class
+
+#folders#
+/target
+/neoDb*
+/data
+/src/main/webapp/WEB-INF/classes
+*/META-INF/*
+
+# Packaged files #
+*.jar
+*.war
+*.ear
@@ -0,0 +1,13 @@
+=========
+
+## Mockito Cookbooks and Examples
+
+
+### Relevant Articles: 
+- [Mockito Verify Cookbook](http://www.baeldung.com/mockito-verify)
+- [Mockito When/Then Cookbook](http://www.baeldung.com/mockito-behavior)
+- [Mockito – Using Spies](http://www.baeldung.com/mockito-spy)
+- [Mockito – @Mock, @Spy, @Captor and @InjectMocks](http://www.baeldung.com/mockito-annotations)
+- [Mockito’s Mock Methods](http://www.baeldung.com/mockito-mock-methods)
+- [Introduction to PowerMock](http://www.baeldung.com/intro-to-powermock)
+- [Mocking Exception Throwing using Mockito](http://www.baeldung.com/mockito-exceptions)
@@ -0,0 +1,73 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.baeldung</groupId>
+    <artifactId>mockito</artifactId>
+    <version>0.1-SNAPSHOT</version>
+
+    <name>mockito</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+        <relativePath>../</relativePath>
+    </parent>
+
+    <dependencies>
+
+        <!-- utils -->
+
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>${commons-lang3.version}</version>
+        </dependency>
+
+        <!-- web -->
+
+        <!-- test scoped -->
+
+        <dependency>
+            <groupId>org.powermock</groupId>
+            <artifactId>powermock-module-junit4</artifactId>
+            <version>${powermock.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.powermock</groupId>
+            <artifactId>powermock-api-mockito2</artifactId>
+            <version>${powermock.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+    </dependencies>
+
+    <build>
+        <finalName>mockito</finalName>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
+
+    </build>
+
+    <properties>
+        <!-- util -->
+        <guava.version>19.0</guava.version>
+        <commons-lang3.version>3.5</commons-lang3.version>
+
+        <!-- testing -->
+        <powermock.version>1.7.0</powermock.version>
+
+    </properties>
+
+</project>
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>web - %date [%thread] %-5level %logger{36} - %message%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <logger name="org.springframework" level="WARN" />
+    <logger name="org.springframework.transaction" level="WARN" />
+
+    <!-- in order to debug some marshalling issues, this needs to be TRACE -->
+    <logger name="org.springframework.web.servlet.mvc" level="WARN" />
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
@@ -0,0 +1,20 @@
+package com.baeldung.powermockito.introduction;
+
+class CollaboratorForPartialMocking {
+
+    static String staticMethod() {
+        return "Hello Baeldung!";
+    }
+
+    final String finalMethod() {
+        return "Hello Baeldung!";
+    }
+
+    private String privateMethod() {
+        return "Hello Baeldung!";
+    }
+
+    String privateMethodCaller() {
+        return privateMethod() + " Welcome to the Java world.";
+    }
+}
@@ -0,0 +1,9 @@
+package com.baeldung.powermockito.introduction;
+
+class CollaboratorWithFinalMethods {
+
+    final String helloMethod() {
+        return "Hello World!";
+    }
+
+}
@@ -0,0 +1,16 @@
+package com.baeldung.powermockito.introduction;
+
+class CollaboratorWithStaticMethods {
+
+    static String firstMethod(String name) {
+        return "Hello " + name + " !";
+    }
+
+    static String secondMethod() {
+        return "Hello no one!";
+    }
+
+    static String thirdMethod() {
+        return "Hello no one again!";
+    }
+}
@@ -0,0 +1,28 @@
+package com.baeldung.powermockito.introduction;
+
+class LuckyNumberGenerator {
+
+    public int getLuckyNumber(String name) {
+
+        saveIntoDatabase(name);
+
+        if (name == null) {
+            return getDefaultLuckyNumber();
+        }
+
+        return getComputedLuckyNumber(name.length());
+    }
+
+    private void saveIntoDatabase(String name) {
+        // Save the name into the database
+    }
+
+    private int getDefaultLuckyNumber() {
+        return 100;
+    }
+
+    private int getComputedLuckyNumber(int length) {
+        return length < 5 ? 5 : 10000;
+    }
+
+}
@@ -0,0 +1,51 @@
+package com.baeldung.powermockito.introduction;
+
+import static org.junit.Assert.assertEquals;
+import static org.powermock.api.mockito.PowerMockito.doReturn;
+import static org.powermock.api.mockito.PowerMockito.spy;
+import static org.powermock.api.mockito.PowerMockito.verifyPrivate;
+import static org.powermock.api.mockito.PowerMockito.when;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.ArgumentMatchers;
+import org.powermock.core.classloader.annotations.PrepareForTest;
+import org.powermock.modules.junit4.PowerMockRunner;
+
+@RunWith(PowerMockRunner.class)
+@PrepareForTest(fullyQualifiedNames = "com.baeldung.powermockito.introduction.LuckyNumberGenerator")
+public class LuckyNumberGeneratorTest {
+
+    @Test
+    public final void givenPrivateMethodWithReturn_whenUsingPowerMockito_thenCorrect() throws Exception {
+        LuckyNumberGenerator mock = spy(new LuckyNumberGenerator());
+
+        when(mock, "getDefaultLuckyNumber").thenReturn(300);
+
+        int result = mock.getLuckyNumber(null);
+
+        assertEquals(300, result);
+    }
+
+    @Test
+    public final void givenPrivateMethodWithArgumentAndReturn_whenUsingPowerMockito_thenCorrect() throws Exception {
+        LuckyNumberGenerator mock = spy(new LuckyNumberGenerator());
+
+        doReturn(1).when(mock, "getComputedLuckyNumber", ArgumentMatchers.anyInt());
+
+        int result = mock.getLuckyNumber("Jack");
+
+        assertEquals(1, result);
+    }
+
+    @Test
+    public final void givenPrivateMethodWithNoArgumentAndReturn_whenUsingPowerMockito_thenCorrect() throws Exception {
+        LuckyNumberGenerator mock = spy(new LuckyNumberGenerator());
+
+        int result = mock.getLuckyNumber("Tyranosorous");
+
+        verifyPrivate(mock).invoke("saveIntoDatabase", ArgumentMatchers.anyString());
+        assertEquals(10000, result);
+    }
+
+}
@@ -0,0 +1,78 @@
+package com.baeldung.powermockito.introduction;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mockito;
+import org.powermock.core.classloader.annotations.PrepareForTest;
+import org.powermock.modules.junit4.PowerMockRunner;
+
+import static org.junit.Assert.assertEquals;
+import static org.powermock.api.mockito.PowerMockito.*;
+
+@RunWith(PowerMockRunner.class)
+@PrepareForTest(fullyQualifiedNames = "com.baeldung.powermockito.introduction.*")
+public class PowerMockitoIntegrationTest {
+
+    @Test
+    public void givenFinalMethods_whenUsingPowerMockito_thenCorrect() throws Exception {
+        CollaboratorWithFinalMethods mock = mock(CollaboratorWithFinalMethods.class);
+        whenNew(CollaboratorWithFinalMethods.class).withNoArguments().thenReturn(mock);
+
+        CollaboratorWithFinalMethods collaborator = new CollaboratorWithFinalMethods();
+        verifyNew(CollaboratorWithFinalMethods.class).withNoArguments();
+
+        when(collaborator.helloMethod()).thenReturn("Hello Baeldung!");
+        String welcome = collaborator.helloMethod();
+        Mockito.verify(collaborator).helloMethod();
+        assertEquals("Hello Baeldung!", welcome);
+    }
+
+    @Test(expected = RuntimeException.class)
+    public void givenStaticMethods_whenUsingPowerMockito_thenCorrect() {
+        mockStatic(CollaboratorWithStaticMethods.class);
+
+        when(CollaboratorWithStaticMethods.firstMethod(Mockito.anyString())).thenReturn("Hello Baeldung!");
+        when(CollaboratorWithStaticMethods.secondMethod()).thenReturn("Nothing special");
+        doThrow(new RuntimeException()).when(CollaboratorWithStaticMethods.class);
+        CollaboratorWithStaticMethods.thirdMethod();
+
+        String firstWelcome = CollaboratorWithStaticMethods.firstMethod("Whoever");
+        String secondWelcome = CollaboratorWithStaticMethods.firstMethod("Whatever");
+
+        assertEquals("Hello Baeldung!", firstWelcome);
+        assertEquals("Hello Baeldung!", secondWelcome);
+
+        verifyStatic(Mockito.times(2));
+        CollaboratorWithStaticMethods.firstMethod(Mockito.anyString());
+
+        verifyStatic(Mockito.never());
+        CollaboratorWithStaticMethods.secondMethod();
+
+        CollaboratorWithStaticMethods.thirdMethod();
+    }
+
+    @Test
+    public void givenPartialMocking_whenUsingPowerMockito_thenCorrect() throws Exception {
+        String returnValue;
+
+        spy(CollaboratorForPartialMocking.class);
+        when(CollaboratorForPartialMocking.staticMethod()).thenReturn("I am a static mock method.");
+        returnValue = CollaboratorForPartialMocking.staticMethod();
+        verifyStatic();
+        CollaboratorForPartialMocking.staticMethod();
+        assertEquals("I am a static mock method.", returnValue);
+
+        CollaboratorForPartialMocking collaborator = new CollaboratorForPartialMocking();
+        CollaboratorForPartialMocking mock = spy(collaborator);
+
+        when(mock.finalMethod()).thenReturn("I am a final mock method.");
+        returnValue = mock.finalMethod();
+        Mockito.verify(mock).finalMethod();
+        assertEquals("I am a final mock method.", returnValue);
+
+        when(mock, "privateMethod").thenReturn("I am a private mock method.");
+        returnValue = mock.privateMethodCaller();
+        verifyPrivate(mock).invoke("privateMethod");
+        assertEquals("I am a private mock method. Welcome to the Java world.", returnValue);
+    }
+}
@@ -0,0 +1,114 @@
+package org.baeldung.mockito;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.*;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import static org.junit.Assert.assertEquals;
+
+//@RunWith(MockitoJUnitRunner.class)
+public class MockitoAnnotationIntegrationTest {
+
+    @Mock
+    private List<String> mockedList;
+
+    @Spy
+    private List<String> spiedList = new ArrayList<>();
+
+    @Before
+    public void init() {
+        MockitoAnnotations.initMocks(this);
+    }
+
+    // tests
+
+    @Test
+    public void whenNotUseMockAnnotation_thenCorrect() {
+        final List<String> mockList = Mockito.mock(List.class);
+        mockList.add("one");
+        Mockito.verify(mockList).add("one");
+        assertEquals(0, mockList.size());
+
+        Mockito.when(mockList.size()).thenReturn(100);
+        assertEquals(100, mockList.size());
+    }
+
+    @Test
+    public void whenUseMockAnnotation_thenMockIsInjected() {
+        mockedList.add("one");
+        Mockito.verify(mockedList).add("one");
+        assertEquals(0, mockedList.size());
+
+        Mockito.when(mockedList.size()).thenReturn(100);
+        assertEquals(100, mockedList.size());
+    }
+
+    @Test
+    public void whenNotUseSpyAnnotation_thenCorrect() {
+        final List<String> spyList = Mockito.spy(new ArrayList<String>());
+        spyList.add("one");
+        spyList.add("two");
+
+        Mockito.verify(spyList).add("one");
+        Mockito.verify(spyList).add("two");
+
+        assertEquals(2, spyList.size());
+
+        Mockito.doReturn(100).when(spyList).size();
+        assertEquals(100, spyList.size());
+    }
+
+    @Test
+    public void whenUseSpyAnnotation_thenSpyIsInjectedCorrectly() {
+        spiedList.add("one");
+        spiedList.add("two");
+
+        Mockito.verify(spiedList).add("one");
+        Mockito.verify(spiedList).add("two");
+
+        assertEquals(2, spiedList.size());
+
+        Mockito.doReturn(100).when(spiedList).size();
+        assertEquals(100, spiedList.size());
+    }
+
+    @Test
+    public void whenNotUseCaptorAnnotation_thenCorrect() {
+        final List<String> mockList = Mockito.mock(List.class);
+        final ArgumentCaptor<String> arg = ArgumentCaptor.forClass(String.class);
+        mockList.add("one");
+        Mockito.verify(mockList).add(arg.capture());
+
+        assertEquals("one", arg.getValue());
+    }
+
+    @Captor
+    private
+    ArgumentCaptor<String> argCaptor;
+
+    @Test
+    public void whenUseCaptorAnnotation_thenTheSam() {
+        mockedList.add("one");
+        Mockito.verify(mockedList).add(argCaptor.capture());
+
+        assertEquals("one", argCaptor.getValue());
+    }
+
+    @Mock
+    private Map<String, String> wordMap;
+
+    @InjectMocks
+    private MyDictionary dic = new MyDictionary();
+
+    @Test
+    public void whenUseInjectMocksAnnotation_thenCorrect() {
+        Mockito.when(wordMap.get("aWord")).thenReturn("aMeaning");
+
+        assertEquals("aMeaning", dic.getMeaning("aWord"));
+    }
+
+}
@@ -0,0 +1,95 @@
+package org.baeldung.mockito;
+
+import org.junit.Test;
+import org.mockito.Mockito;
+
+import static org.apache.commons.lang3.RandomStringUtils.randomAlphabetic;
+import static org.hamcrest.Matchers.equalTo;
+import static org.hamcrest.Matchers.is;
+import static org.junit.Assert.assertThat;
+import static org.mockito.Matchers.anyInt;
+import static org.mockito.Matchers.anyString;
+import static org.mockito.Mockito.*;
+
+public class MockitoConfigExamplesIntegrationTest {
+
+    // tests
+
+    @Test
+    public final void whenMockReturnBehaviorIsConfigured_thenBehaviorIsVerified() {
+        final MyList listMock = Mockito.mock(MyList.class);
+        when(listMock.add(anyString())).thenReturn(false);
+
+        final boolean added = listMock.add(randomAlphabetic(6));
+        assertThat(added, is(false));
+    }
+
+    @Test
+    public final void whenMockReturnBehaviorIsConfigured2_thenBehaviorIsVerified() {
+        final MyList listMock = Mockito.mock(MyList.class);
+        doReturn(false).when(listMock).add(anyString());
+
+        final boolean added = listMock.add(randomAlphabetic(6));
+        assertThat(added, is(false));
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public final void givenMethodIsConfiguredToThrowException_whenCallingMethod_thenExceptionIsThrown() {
+        final MyList listMock = Mockito.mock(MyList.class);
+        when(listMock.add(anyString())).thenThrow(IllegalStateException.class);
+
+        listMock.add(randomAlphabetic(6));
+    }
+
+    @Test(expected = NullPointerException.class)
+    public final void whenMethodHasNoReturnType_whenConfiguringBehaviorOfMethod_thenPossible() {
+        final MyList listMock = Mockito.mock(MyList.class);
+        doThrow(NullPointerException.class).when(listMock).clear();
+
+        listMock.clear();
+    }
+
+    @Test
+    public final void givenBehaviorIsConfiguredToThrowExceptionOnSecondCall_whenCallingOnlyOnce_thenNoExceptionIsThrown() {
+        final MyList listMock = Mockito.mock(MyList.class);
+        when(listMock.add(anyString())).thenReturn(false).thenThrow(IllegalStateException.class);
+
+        listMock.add(randomAlphabetic(6));
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public final void givenBehaviorIsConfiguredToThrowExceptionOnSecondCall_whenCallingTwice_thenExceptionIsThrown() {
+        final MyList listMock = Mockito.mock(MyList.class);
+        when(listMock.add(anyString())).thenReturn(false).thenThrow(IllegalStateException.class);
+
+        listMock.add(randomAlphabetic(6));
+        listMock.add(randomAlphabetic(6));
+    }
+
+    @Test
+    public final void whenMockMethodCallIsConfiguredToCallTheRealMethod_thenRealMethodIsCalled() {
+        final MyList listMock = Mockito.mock(MyList.class);
+        when(listMock.size()).thenCallRealMethod();
+
+        assertThat(listMock.size(), equalTo(1));
+    }
+
+    @Test
+    public final void whenMockMethodCallIsConfiguredWithCustomAnswer_thenRealMethodIsCalled() {
+        final MyList listMock = Mockito.mock(MyList.class);
+        doAnswer(invocation -> "Always the same").when(listMock).get(anyInt());
+
+        final String element = listMock.get(1);
+        assertThat(element, is(equalTo("Always the same")));
+    }
+
+    @Test(expected = NullPointerException.class)
+    public final void givenSpy_whenConfiguringBehaviorOfSpy_thenCorrectlyConfigured() {
+        final MyList instance = new MyList();
+        final MyList spy = Mockito.spy(instance);
+
+        doThrow(NullPointerException.class).when(spy).size();
+        spy.size();
+    }
+
+}
@@ -0,0 +1,57 @@
+package org.baeldung.mockito;
+
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.doThrow;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import org.junit.Test;
+import org.mockito.Mockito;
+
+public class MockitoExceptionIntegrationTest {
+
+    @Test(expected = NullPointerException.class)
+    public void whenConfigNonVoidRetunMethodToThrowEx_thenExIsThrown() {
+        MyDictionary dictMock = mock(MyDictionary.class);
+        when(dictMock.getMeaning(anyString())).thenThrow(NullPointerException.class);
+
+        dictMock.getMeaning("word");
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void whenConfigVoidRetunMethodToThrowEx_thenExIsThrown() {
+        MyDictionary dictMock = mock(MyDictionary.class);
+        doThrow(IllegalStateException.class).when(dictMock)
+            .add(anyString(), anyString());
+
+        dictMock.add("word", "meaning");
+    }
+
+    @Test(expected = NullPointerException.class)
+    public void whenConfigNonVoidRetunMethodToThrowExWithNewExObj_thenExIsThrown() {
+        MyDictionary dictMock = mock(MyDictionary.class);
+        when(dictMock.getMeaning(anyString())).thenThrow(new NullPointerException("Error occurred"));
+
+        dictMock.getMeaning("word");
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void whenConfigVoidRetunMethodToThrowExWithNewExObj_thenExIsThrown() {
+        MyDictionary dictMock = mock(MyDictionary.class);
+        doThrow(new IllegalStateException("Error occurred")).when(dictMock)
+            .add(anyString(), anyString());
+
+        dictMock.add("word", "meaning");
+    }
+
+    // =====
+
+    @Test(expected = NullPointerException.class)
+    public void givenSpy_whenConfigNonVoidRetunMethodToThrowEx_thenExIsThrown() {
+        MyDictionary dict = new MyDictionary();
+        MyDictionary spy = Mockito.spy(dict);
+
+        when(spy.getMeaning(anyString())).thenThrow(NullPointerException.class);
+        spy.getMeaning("word");
+    }
+}
@@ -0,0 +1,69 @@
+package org.baeldung.mockito;
+
+import static org.mockito.Mockito.*;
+import static org.junit.Assert.assertThat;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.containsString;
+import static org.apache.commons.lang3.RandomStringUtils.randomAlphabetic;
+
+import org.junit.Test;
+import org.junit.Rule;
+import org.junit.rules.ExpectedException;
+import org.mockito.MockSettings;
+import org.mockito.exceptions.verification.TooLittleActualInvocations;
+import org.mockito.invocation.InvocationOnMock;
+import org.mockito.stubbing.Answer;
+
+public class MockitoMockIntegrationTest {
+
+    private static class CustomAnswer implements Answer<Boolean> {
+        @Override
+        public Boolean answer(InvocationOnMock invocation) throws Throwable {
+            return false;
+        }
+    }
+
+    @Rule
+    private ExpectedException thrown = ExpectedException.none();
+
+    @Test
+    public void whenUsingSimpleMock_thenCorrect() {
+        MyList listMock = mock(MyList.class);
+        when(listMock.add(anyString())).thenReturn(false);
+        boolean added = listMock.add(randomAlphabetic(6));
+
+        verify(listMock).add(anyString());
+        assertThat(added, is(false));
+    }
+
+    @Test
+    public void whenUsingMockWithName_thenCorrect() {
+        MyList listMock = mock(MyList.class, "myMock");
+        when(listMock.add(anyString())).thenReturn(false);
+        listMock.add(randomAlphabetic(6));
+        
+        thrown.expect(TooLittleActualInvocations.class);
+        thrown.expectMessage(containsString("myMock.add"));
+
+        verify(listMock, times(2)).add(anyString());
+    }
+
+    @Test
+    public void whenUsingMockWithAnswer_thenCorrect() {
+        MyList listMock = mock(MyList.class, new CustomAnswer());
+        boolean added = listMock.add(randomAlphabetic(6));
+
+        verify(listMock).add(anyString());
+        assertThat(added, is(false));
+    }
+
+    @Test
+    public void whenUsingMockWithSettings_thenCorrect() {
+        MockSettings customSettings = withSettings().defaultAnswer(new CustomAnswer());
+        MyList listMock = mock(MyList.class, customSettings);
+        boolean added = listMock.add(randomAlphabetic(6));
+
+        verify(listMock).add(anyString());
+        assertThat(added, is(false));
+    }
+}
@@ -0,0 +1,76 @@
+package org.baeldung.mockito;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mockito;
+import org.mockito.Spy;
+import org.mockito.runners.MockitoJUnitRunner;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+
+@RunWith(MockitoJUnitRunner.class)
+public class MockitoSpyIntegrationTest {
+
+    @Spy
+    private List<String> aSpyList = new ArrayList<String>();
+
+    @Test
+    public void whenSpyingOnList_thenCorrect() {
+        final List<String> list = new ArrayList<String>();
+        final List<String> spyList = Mockito.spy(list);
+
+        spyList.add("one");
+        spyList.add("two");
+
+        Mockito.verify(spyList).add("one");
+        Mockito.verify(spyList).add("two");
+
+        assertEquals(2, spyList.size());
+    }
+
+    @Test
+    public void whenUsingTheSpyAnnotation_thenObjectIsSpied() {
+        aSpyList.add("one");
+        aSpyList.add("two");
+
+        Mockito.verify(aSpyList).add("one");
+        Mockito.verify(aSpyList).add("two");
+
+        assertEquals(2, aSpyList.size());
+    }
+
+    @Test
+    public void whenStubASpy_thenStubbed() {
+        final List<String> list = new ArrayList<String>();
+        final List<String> spyList = Mockito.spy(list);
+
+        assertEquals(0, spyList.size());
+
+        Mockito.doReturn(100).when(spyList).size();
+        assertEquals(100, spyList.size());
+    }
+
+    @Test
+    public void whenCreateMock_thenCreated() {
+        final List<String> mockedList = Mockito.mock(ArrayList.class);
+
+        mockedList.add("one");
+        Mockito.verify(mockedList).add("one");
+
+        assertEquals(0, mockedList.size());
+    }
+
+    @Test
+    public void whenCreateSpy_thenCreate() {
+        final List<String> spyList = Mockito.spy(new ArrayList<String>());
+
+        spyList.add("one");
+        Mockito.verify(spyList).add("one");
+
+        assertEquals(1, spyList.size());
+    }
+
+}
@@ -0,0 +1,117 @@
+package org.baeldung.mockito;
+
+import com.google.common.collect.Lists;
+import org.junit.Test;
+import org.mockito.ArgumentCaptor;
+import org.mockito.InOrder;
+import org.mockito.Mockito;
+import org.mockito.exceptions.verification.NoInteractionsWanted;
+
+import java.util.List;
+
+import static org.hamcrest.Matchers.hasItem;
+import static org.junit.Assert.assertThat;
+import static org.mockito.Matchers.anyString;
+import static org.mockito.Mockito.*;
+
+public class MockitoVerifyExamplesIntegrationTest {
+
+    // tests
+
+    @Test
+    public final void givenInteractionWithMockOccurred_whenVerifyingInteraction_thenCorrect() {
+        final List<String> mockedList = mock(MyList.class);
+        mockedList.size();
+        verify(mockedList).size();
+    }
+
+    @Test
+    public final void givenOneInteractionWithMockOccurred_whenVerifyingNumberOfInteractions_thenCorrect() {
+        final List<String> mockedList = mock(MyList.class);
+        mockedList.size();
+        verify(mockedList, times(1)).size();
+    }
+
+    @Test
+    public final void givenNoInteractionWithMockOccurred_whenVerifyingInteractions_thenCorrect() {
+        final List<String> mockedList = mock(MyList.class);
+        verifyZeroInteractions(mockedList);
+    }
+
+    @Test
+    public final void givenNoInteractionWithMethodOfMockOccurred_whenVerifyingInteractions_thenCorrect() {
+        final List<String> mockedList = mock(MyList.class);
+        verify(mockedList, times(0)).size();
+    }
+
+    @Test(expected = NoInteractionsWanted.class)
+    public final void givenUnverifiedInteraction_whenVerifyingNoUnexpectedInteractions_thenFail() {
+        final List<String> mockedList = mock(MyList.class);
+        mockedList.size();
+        mockedList.clear();
+
+        verify(mockedList).size();
+        verifyNoMoreInteractions(mockedList);
+    }
+
+    @Test
+    public final void whenVerifyingOrderOfInteractions_thenCorrect() {
+        final List<String> mockedList = mock(MyList.class);
+        mockedList.size();
+        mockedList.add("a parameter");
+        mockedList.clear();
+
+        final InOrder inOrder = Mockito.inOrder(mockedList);
+        inOrder.verify(mockedList).size();
+        inOrder.verify(mockedList).add("a parameter");
+        inOrder.verify(mockedList).clear();
+    }
+
+    @Test
+    public final void whenVerifyingAnInteractionHasNotOccurred_thenCorrect() {
+        final List<String> mockedList = mock(MyList.class);
+        mockedList.size();
+
+        verify(mockedList, never()).clear();
+    }
+
+    @Test
+    public final void whenVerifyingAnInteractionHasOccurredAtLeastOnce_thenCorrect() {
+        final List<String> mockedList = mock(MyList.class);
+        mockedList.clear();
+        mockedList.clear();
+        mockedList.clear();
+
+        verify(mockedList, atLeast(1)).clear();
+        verify(mockedList, atMost(10)).clear();
+    }
+
+    // with arguments
+
+    @Test
+    public final void whenVerifyingAnInteractionWithExactArgument_thenCorrect() {
+        final List<String> mockedList = mock(MyList.class);
+        mockedList.add("test");
+
+        verify(mockedList).add("test");
+    }
+
+    @Test
+    public final void whenVerifyingAnInteractionWithAnyArgument_thenCorrect() {
+        final List<String> mockedList = mock(MyList.class);
+        mockedList.add("test");
+
+        verify(mockedList).add(anyString());
+    }
+
+    @Test
+    public final void whenVerifyingAnInteractionWithArgumentCapture_thenCorrect() {
+        final List<String> mockedList = mock(MyList.class);
+        mockedList.addAll(Lists.<String>newArrayList("someElement"));
+        final ArgumentCaptor<List> argumentCaptor = ArgumentCaptor.forClass(List.class);
+        verify(mockedList).addAll(argumentCaptor.capture());
+        final List<String> capturedArgument = argumentCaptor.<List<String>>getValue();
+        assertThat(capturedArgument, hasItem("someElement"));
+    }
+
+}
@@ -0,0 +1,62 @@
+package org.baeldung.mockito;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import static org.junit.Assert.assertEquals;
+
+import static org.mockito.Mockito.*;
+import org.mockito.ArgumentCaptor;
+import static org.mockito.Matchers.any;
+import org.mockito.stubbing.Answer;
+import org.mockito.runners.MockitoJUnitRunner;
+
+@RunWith(MockitoJUnitRunner.class)
+public class MockitoVoidMethodsTest {
+
+    @Test
+    public void whenAddCalledVerified() {
+        MyList mockVoid = mock(MyList.class);
+        mockVoid.add(0, "");
+        verify(mockVoid, times(1)).add(0, "");
+    }
+
+    @Test(expected = Exception.class)
+    public void givenNull_addThrows() {
+        MyList mockVoid = mock(MyList.class);
+        doThrow().when(mockVoid).add(isA(Integer.class), isNull());
+        mockVoid.add(0, null);
+    }
+
+    @Test
+    public void whenAddCalledValueCaptured() {
+        MyList mockVoid = mock(MyList.class);
+        ArgumentCaptor<String> valueCapture = ArgumentCaptor.forClass(String.class);
+        doNothing().when(mockVoid).add(any(Integer.class), valueCapture.capture());
+        mockVoid.add(0, "captured");
+        assertEquals("captured", valueCapture.getValue());
+    }
+
+    @Test
+    public void whenAddCalledAnswered() {
+        MyList mockVoid = mock(MyList.class);
+        doAnswer((Answer<Void>) invocation -> {
+            Object arg0 = invocation.getArgument(0);
+            Object arg1 = invocation.getArgument(1);
+
+            //do something with the arguments here
+            assertEquals(3, arg0);
+            assertEquals("answer me", arg1);
+
+            return null;
+        }).when(mockVoid).add(any(Integer.class), any(String.class));
+        mockVoid.add(3, "answer me");
+    }
+
+    @Test
+    public void whenAddCalledRealMethodCalled() {
+        MyList mockVoid = mock(MyList.class);
+        doCallRealMethod().when(mockVoid).add(any(Integer.class), any(String.class));
+        mockVoid.add(1, "real");
+        verify(mockVoid, times(1)).add(1, "real");
+    }
+}
@@ -0,0 +1,21 @@
+package org.baeldung.mockito;
+
+import java.util.HashMap;
+import java.util.Map;
+
+class MyDictionary {
+
+    private Map<String, String> wordMap;
+
+    MyDictionary() {
+        wordMap = new HashMap<>();
+    }
+
+    public void add(final String word, final String meaning) {
+        wordMap.put(word, meaning);
+    }
+
+    String getMeaning(final String word) {
+        return wordMap.get(word);
+    }
+}
@@ -0,0 +1,22 @@
+package org.baeldung.mockito;
+
+import java.util.AbstractList;
+
+class MyList extends AbstractList<String> {
+
+    @Override
+    public String get(final int index) {
+        return null;
+    }
+
+    @Override
+    public int size() {
+        return 1;
+    }
+
+    @Override
+    public void add(int index, String element) {
+        // no-op
+    }
+
+}
@@ -0,0 +1,7 @@
+## Relevant articles:
+
+- [Introduction to MockServer](http://www.baeldung.com/mockserver)
+- [JMockit Advanced Usage](http://www.baeldung.com/jmockit-advanced-usage)
+- [A Guide to JMockit Expectations](http://www.baeldung.com/jmockit-expectations)
+- [JMockit 101](http://www.baeldung.com/jmockit-101)
+- [Mockito vs EasyMock vs JMockit](http://www.baeldung.com/mockito-vs-easymock-vs-jmockit)
--- a/Show More
+++ b/Show More
				`@@ -0,0 +1 @@`
				`com.baeldung.extensions.EmployeeDaoParameterResolver`