diff --git a/spring-boot-modules/spring-boot-testing/.gitignore b/spring-boot-modules/spring-boot-testing/.gitignore
new file mode 100644
index 0000000000..da7c2c5c0a
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/.gitignore
@@ -0,0 +1,5 @@
+/target/
+.settings/
+.classpath
+.project
+
diff --git a/spring-boot-modules/spring-boot-testing/.mvn/wrapper/maven-wrapper.properties b/spring-boot-modules/spring-boot-testing/.mvn/wrapper/maven-wrapper.properties
new file mode 100644
index 0000000000..a447c9fa81
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/.mvn/wrapper/maven-wrapper.properties
@@ -0,0 +1 @@
+distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.2/apache-maven-3.5.2-bin.zip
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/README.md b/spring-boot-modules/spring-boot-testing/README.md
new file mode 100644
index 0000000000..19f5ca0f59
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/README.md
@@ -0,0 +1,18 @@
+## Spring Boot Testing
+
+This module contains articles about Spring Boot testing
+
+### The Course
+
+The "REST With Spring" Classes: http://bit.ly/restwithspring
+
+### Relevant Articles:
+
+- [Testing with Spring and Spock](https://www.baeldung.com/spring-spock-testing)
+- [Exclude Auto-Configuration Classes in Spring Boot Tests](https://www.baeldung.com/spring-boot-exclude-auto-configuration-test)
+- [Embedded Redis Server with Spring Boot Test](https://www.baeldung.com/spring-embedded-redis)
+- [Testing Spring Boot @ConfigurationProperties](https://www.baeldung.com/spring-boot-testing-configurationproperties)
+- [Prevent ApplicationRunner or CommandLineRunner Beans From Executing During Junit Testing](https://www.baeldung.com/spring-junit-prevent-runner-beans-testing-execution)
+- [Testing in Spring Boot](https://www.baeldung.com/spring-boot-testing)
+- [Fixing the NoSuchMethodError JUnit Error](https://www.baeldung.com/junit-nosuchmethoderror)
+- More articles: [[more -->]](../spring-boot-testing-2)
diff --git a/spring-boot-modules/spring-boot-testing/mvnw b/spring-boot-modules/spring-boot-testing/mvnw
new file mode 100644
index 0000000000..e96ccd5fbb
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/mvnw
@@ -0,0 +1,227 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven2 Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+# JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+# M2_HOME - location of maven2's installed home dir
+# MAVEN_OPTS - parameters passed to the Java VM when running Maven
+# e.g. to debug Maven itself, use
+# set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+# MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+ if [ -f /etc/mavenrc ] ; then
+ . /etc/mavenrc
+ fi
+
+ if [ -f "$HOME/.mavenrc" ] ; then
+ . "$HOME/.mavenrc"
+ fi
+
+fi
+
+# OS specific support. $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+ CYGWIN*) cygwin=true ;;
+ MINGW*) mingw=true;;
+ Darwin*) darwin=true
+ # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+ # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+ if [ -z "$JAVA_HOME" ]; then
+ if [ -x "/usr/libexec/java_home" ]; then
+ export JAVA_HOME="`/usr/libexec/java_home`"
+ else
+ export JAVA_HOME="/Library/Java/Home"
+ fi
+ fi
+ ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+ if [ -r /etc/gentoo-release ] ; then
+ JAVA_HOME=`java-config --jre-home`
+ fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+ ## resolve links - $0 may be a link to maven's home
+ PRG="$0"
+
+ # need this for relative symlinks
+ while [ -h "$PRG" ] ; do
+ ls=`ls -ld "$PRG"`
+ link=`expr "$ls" : '.*-> \(.*\)$'`
+ if expr "$link" : '/.*' > /dev/null; then
+ PRG="$link"
+ else
+ PRG="`dirname "$PRG"`/$link"
+ fi
+ done
+
+ saveddir=`pwd`
+
+ M2_HOME=`dirname "$PRG"`/..
+
+ # make it fully qualified
+ M2_HOME=`cd "$M2_HOME" && pwd`
+
+ cd "$saveddir"
+ # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+ [ -n "$M2_HOME" ] &&
+ M2_HOME=`cygpath --unix "$M2_HOME"`
+ [ -n "$JAVA_HOME" ] &&
+ JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+ [ -n "$CLASSPATH" ] &&
+ CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+ [ -n "$M2_HOME" ] &&
+ M2_HOME="`(cd "$M2_HOME"; pwd)`"
+ [ -n "$JAVA_HOME" ] &&
+ JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+ # TODO classpath?
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+ javaExecutable="`which javac`"
+ if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+ # readlink(1) is not available as standard on Solaris 10.
+ readLink=`which readlink`
+ if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+ if $darwin ; then
+ javaHome="`dirname \"$javaExecutable\"`"
+ javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+ else
+ javaExecutable="`readlink -f \"$javaExecutable\"`"
+ fi
+ javaHome="`dirname \"$javaExecutable\"`"
+ javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+ JAVA_HOME="$javaHome"
+ export JAVA_HOME
+ fi
+ fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+ if [ -n "$JAVA_HOME" ] ; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD="$JAVA_HOME/jre/sh/java"
+ else
+ JAVACMD="$JAVA_HOME/bin/java"
+ fi
+ else
+ JAVACMD="`which java`"
+ fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+ echo "Error: JAVA_HOME is not defined correctly." >&2
+ echo " We cannot execute $JAVACMD" >&2
+ exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+ echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+
+ if [ -z "$1" ]
+ then
+ echo "Path not specified to find_maven_basedir"
+ return 1
+ fi
+
+ basedir="$1"
+ wdir="$1"
+ while [ "$wdir" != '/' ] ; do
+ if [ -d "$wdir"/.mvn ] ; then
+ basedir=$wdir
+ break
+ fi
+ # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+ if [ -d "${wdir}" ]; then
+ wdir=`cd "$wdir/.."; pwd`
+ fi
+ # end of workaround
+ done
+ echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+ if [ -f "$1" ]; then
+ echo "$(tr -s '\n' ' ' < "$1")"
+ fi
+}
+
+BASE_DIR=`find_maven_basedir "$(pwd)"`
+if [ -z "$BASE_DIR" ]; then
+ exit 1;
+fi
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
+if [ "$MVNW_VERBOSE" = true ]; then
+ echo $MAVEN_PROJECTBASEDIR
+fi
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+ [ -n "$M2_HOME" ] &&
+ M2_HOME=`cygpath --path --windows "$M2_HOME"`
+ [ -n "$JAVA_HOME" ] &&
+ JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+ [ -n "$CLASSPATH" ] &&
+ CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+ [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+ MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+ $MAVEN_OPTS \
+ -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+ "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+ ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"
diff --git a/spring-boot-modules/spring-boot-testing/mvnw.cmd b/spring-boot-modules/spring-boot-testing/mvnw.cmd
new file mode 100644
index 0000000000..6a6eec39ba
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/mvnw.cmd
@@ -0,0 +1,145 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements. See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership. The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License. You may obtain a copy of the License at
+@REM
+@REM http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied. See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Maven2 Start Up Batch script
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM M2_HOME - location of maven2's installed home dir
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a key stroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing my setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on" echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"
+if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd"
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+%MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat"
+if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%" == "on" pause
+
+if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE%
+
+exit /B %ERROR_CODE%
diff --git a/spring-boot-modules/spring-boot-testing/pom.xml b/spring-boot-modules/spring-boot-testing/pom.xml
new file mode 100644
index 0000000000..fcfc2364ba
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/pom.xml
@@ -0,0 +1,149 @@
+
+
+ 4.0.0
+ spring-boot-testing
+ spring-boot-testing
+ war
+ This is simple boot application for demonstrating testing features.
+
+
+ com.baeldung.spring-boot-modules
+ spring-boot-modules
+ 1.0.0-SNAPSHOT
+
+
+
+
+
+ org.apache.logging.log4j
+ log4j-bom
+ ${log4j2.version}
+ import
+ pom
+
+
+
+
+
+
+ org.springframework.boot
+ spring-boot-starter-data-redis
+
+
+ org.springframework.boot
+ spring-boot-starter-web
+
+
+ org.springframework.boot
+ spring-boot-starter-validation
+
+
+ org.springframework.boot
+ spring-boot-starter-tomcat
+
+
+ org.springframework.boot
+ spring-boot-starter-security
+
+
+ org.springframework.boot
+ spring-boot-starter-data-jpa
+
+
+ com.h2database
+ h2
+
+
+ org.springframework.boot
+ spring-boot-starter-test
+ test
+
+
+
+ it.ozimov
+ embedded-redis
+ ${redis.version}
+ test
+
+
+
+ org.spockframework
+ spock-core
+ ${spock.version}
+ test
+
+
+ org.spockframework
+ spock-spring
+ ${spock.version}
+ test
+
+
+
+
+ spring-boot-testing
+
+
+ src/main/resources
+ true
+
+
+
+
+ org.apache.maven.plugins
+ maven-war-plugin
+
+
+ pl.project13.maven
+ git-commit-id-plugin
+ ${git-commit-id-plugin.version}
+
+
+ get-the-git-infos
+
+ revision
+
+ initialize
+
+
+ validate-the-git-infos
+
+ validateRevision
+
+ package
+
+
+
+ true
+ ${project.build.outputDirectory}/git.properties
+
+
+
+ org.codehaus.gmavenplus
+ gmavenplus-plugin
+ ${gmavenplus-plugin.version}
+
+
+
+ compileTests
+
+
+
+
+
+
+
+
+
+ com.baeldung.boot.Application
+ 2.2.4
+ 1.2-groovy-2.4
+ 1.6
+ 0.7.2
+ 2.5.0
+ 2.17.1
+
+
+
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/Application.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/Application.java
new file mode 100644
index 0000000000..cb0d0c1532
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/Application.java
@@ -0,0 +1,14 @@
+package com.baeldung.boot;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.ApplicationContext;
+
+@SpringBootApplication
+public class Application {
+ private static ApplicationContext applicationContext;
+
+ public static void main(String[] args) {
+ applicationContext = SpringApplication.run(Application.class, args);
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/configurationproperties/Credentials.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/configurationproperties/Credentials.java
new file mode 100644
index 0000000000..e51937cf57
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/configurationproperties/Credentials.java
@@ -0,0 +1,28 @@
+package com.baeldung.boot.configurationproperties;
+
+public class Credentials {
+
+ private String username;
+ private String password;
+
+ public Credentials(String username, String password) {
+ this.username = username;
+ this.password = password;
+ }
+
+ public String getUsername() {
+ return username;
+ }
+
+ public void setUsername(String username) {
+ this.username = username;
+ }
+
+ public String getPassword() {
+ return password;
+ }
+
+ public void setPassword(String password) {
+ this.password = password;
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/configurationproperties/CustomCredentialsConverter.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/configurationproperties/CustomCredentialsConverter.java
new file mode 100644
index 0000000000..ef160c8c9a
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/configurationproperties/CustomCredentialsConverter.java
@@ -0,0 +1,16 @@
+package com.baeldung.boot.configurationproperties;
+
+import org.springframework.boot.context.properties.ConfigurationPropertiesBinding;
+import org.springframework.core.convert.converter.Converter;
+import org.springframework.stereotype.Component;
+
+@Component
+@ConfigurationPropertiesBinding
+public class CustomCredentialsConverter implements Converter {
+
+ @Override
+ public Credentials convert(String source) {
+ String[] data = source.split(",");
+ return new Credentials(data[0], data[1]);
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/configurationproperties/MailServer.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/configurationproperties/MailServer.java
new file mode 100644
index 0000000000..e23b30759b
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/configurationproperties/MailServer.java
@@ -0,0 +1,59 @@
+package com.baeldung.boot.configurationproperties;
+
+import java.util.Map;
+
+import javax.validation.Valid;
+import javax.validation.constraints.Email;
+import javax.validation.constraints.NotBlank;
+import javax.validation.constraints.NotEmpty;
+import javax.validation.constraints.NotNull;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.PropertySource;
+import org.springframework.validation.annotation.Validated;
+
+@Configuration
+@ConfigurationProperties(prefix = "validate")
+@PropertySource("classpath:property-validation.properties")
+@Validated
+public class MailServer {
+
+ @NotNull
+ @NotEmpty
+ private Map propertiesMap;
+
+ @Valid
+ private MailConfig mailConfig = new MailConfig();
+
+ public static class MailConfig {
+
+ @NotBlank
+ @Email
+ private String address;
+
+ public String getAddress() {
+ return address;
+ }
+
+ public void setAddress(String address) {
+ this.address = address;
+ }
+ }
+
+ public Map getPropertiesMap() {
+ return propertiesMap;
+ }
+
+ public void setPropertiesMap(Map propertiesMap) {
+ this.propertiesMap = propertiesMap;
+ }
+
+ public MailConfig getMailConfig() {
+ return mailConfig;
+ }
+
+ public void setMailConfig(MailConfig mailConfig) {
+ this.mailConfig = mailConfig;
+ }
+}
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/configurationproperties/PropertyConversion.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/configurationproperties/PropertyConversion.java
new file mode 100644
index 0000000000..9b2ea39299
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/configurationproperties/PropertyConversion.java
@@ -0,0 +1,67 @@
+package com.baeldung.boot.configurationproperties;
+
+import java.time.Duration;
+import java.time.temporal.ChronoUnit;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.convert.DataSizeUnit;
+import org.springframework.boot.convert.DurationUnit;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.util.unit.DataSize;
+import org.springframework.util.unit.DataUnit;
+
+@Configuration
+@ConfigurationProperties(prefix = "server")
+public class PropertyConversion {
+
+ private DataSize uploadSpeed;
+
+ @DataSizeUnit(DataUnit.GIGABYTES)
+ private DataSize downloadSpeed;
+
+ private Duration backupDay;
+
+ @DurationUnit(ChronoUnit.HOURS)
+ private Duration backupHour;
+
+ private Credentials credentials;
+
+ public Duration getBackupDay() {
+ return backupDay;
+ }
+
+ public void setBackupDay(Duration backupDay) {
+ this.backupDay = backupDay;
+ }
+
+ public Duration getBackupHour() {
+ return backupHour;
+ }
+
+ public void setBackupHour(Duration backupHour) {
+ this.backupHour = backupHour;
+ }
+
+ public DataSize getUploadSpeed() {
+ return uploadSpeed;
+ }
+
+ public void setUploadSpeed(DataSize uploadSpeed) {
+ this.uploadSpeed = uploadSpeed;
+ }
+
+ public DataSize getDownloadSpeed() {
+ return downloadSpeed;
+ }
+
+ public void setDownloadSpeed(DataSize downloadSpeed) {
+ this.downloadSpeed = downloadSpeed;
+ }
+
+ public Credentials getCredentials() {
+ return credentials;
+ }
+
+ public void setCredentials(Credentials credentials) {
+ this.credentials = credentials;
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/configurationproperties/ServerConfig.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/configurationproperties/ServerConfig.java
new file mode 100644
index 0000000000..0c9e62445a
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/configurationproperties/ServerConfig.java
@@ -0,0 +1,43 @@
+package com.baeldung.boot.configurationproperties;
+
+import java.util.Map;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ConfigurationProperties(prefix = "server")
+public class ServerConfig {
+
+ private Address address;
+ private Map resourcesPath;
+
+ public static class Address {
+
+ private String ip;
+
+ public String getIp() {
+ return ip;
+ }
+
+ public void setIp(String ip) {
+ this.ip = ip;
+ }
+ }
+
+ public Address getAddress() {
+ return address;
+ }
+
+ public void setAddress(Address address) {
+ this.address = address;
+ }
+
+ public Map getResourcesPath() {
+ return resourcesPath;
+ }
+
+ public void setResourcesPath(Map resourcesPath) {
+ this.resourcesPath = resourcesPath;
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/configurationproperties/ServerConfigFactory.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/configurationproperties/ServerConfigFactory.java
new file mode 100644
index 0000000000..ca85d59112
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/configurationproperties/ServerConfigFactory.java
@@ -0,0 +1,15 @@
+package com.baeldung.boot.configurationproperties;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class ServerConfigFactory {
+
+ @Bean(name = "default_bean")
+ @ConfigurationProperties(prefix = "server.default")
+ public ServerConfig getDefaultConfigs() {
+ return new ServerConfig();
+ }
+}
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/controller/rest/HomeController.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/controller/rest/HomeController.java
new file mode 100644
index 0000000000..595c34254b
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/controller/rest/HomeController.java
@@ -0,0 +1,14 @@
+package com.baeldung.boot.controller.rest;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class HomeController {
+
+ @GetMapping("/")
+ public String salutation() {
+ return "Welcome !";
+ }
+
+}
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/controller/rest/WebController.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/controller/rest/WebController.java
new file mode 100644
index 0000000000..7247ca3dfa
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/controller/rest/WebController.java
@@ -0,0 +1,36 @@
+package com.baeldung.boot.controller.rest;
+
+import java.util.Optional;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseStatus;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/hello")
+public class WebController {
+
+ private String name;
+
+ @GetMapping
+ public String salutation() {
+ return "Hello " + Optional.ofNullable(name).orElse("world") + '!';
+ }
+
+ @PutMapping
+ @ResponseStatus(HttpStatus.NO_CONTENT)
+ public void setName(@RequestBody final String name) {
+ this.name = name;
+ }
+
+ @DeleteMapping
+ @ResponseStatus(HttpStatus.NO_CONTENT)
+ public void resetToDefault() {
+ this.name = null;
+ }
+}
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/embeddedRedis/configuration/RedisConfiguration.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/embeddedRedis/configuration/RedisConfiguration.java
new file mode 100644
index 0000000000..6b5b20892f
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/embeddedRedis/configuration/RedisConfiguration.java
@@ -0,0 +1,24 @@
+package com.baeldung.boot.embeddedRedis.configuration;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.repository.configuration.EnableRedisRepositories;
+
+@Configuration
+@EnableRedisRepositories
+public class RedisConfiguration {
+
+ @Bean
+ public LettuceConnectionFactory redisConnectionFactory(final RedisProperties redisProperties) {
+ return new LettuceConnectionFactory(redisProperties.getRedisHost(), redisProperties.getRedisPort());
+ }
+
+ @Bean
+ public RedisTemplate, ?> redisTemplate(final LettuceConnectionFactory connectionFactory) {
+ RedisTemplate template = new RedisTemplate<>();
+ template.setConnectionFactory(connectionFactory);
+ return template;
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/embeddedRedis/configuration/RedisProperties.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/embeddedRedis/configuration/RedisProperties.java
new file mode 100644
index 0000000000..76f2e1bbfe
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/embeddedRedis/configuration/RedisProperties.java
@@ -0,0 +1,23 @@
+package com.baeldung.boot.embeddedRedis.configuration;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class RedisProperties {
+ private final int redisPort;
+ private final String redisHost;
+
+ public RedisProperties(@Value("${spring.redis.port}") final int redisPort, @Value("${spring.redis.host}") final String redisHost) {
+ this.redisPort = redisPort;
+ this.redisHost = redisHost;
+ }
+
+ public int getRedisPort() {
+ return redisPort;
+ }
+
+ public String getRedisHost() {
+ return redisHost;
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/embeddedRedis/domain/User.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/embeddedRedis/domain/User.java
new file mode 100644
index 0000000000..41657aaa66
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/embeddedRedis/domain/User.java
@@ -0,0 +1,25 @@
+package com.baeldung.boot.embeddedRedis.domain;
+
+import org.springframework.data.annotation.Id;
+import org.springframework.data.redis.core.RedisHash;
+
+import java.util.UUID;
+
+@RedisHash("user")
+public class User {
+ @Id private UUID id;
+ private String name;
+
+ public User(UUID id, String name) {
+ this.id = id;
+ this.name = name;
+ }
+
+ public UUID getId() {
+ return id;
+ }
+
+ public String getName() {
+ return name;
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/embeddedRedis/domain/repository/UserRepository.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/embeddedRedis/domain/repository/UserRepository.java
new file mode 100644
index 0000000000..0558bb8482
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/embeddedRedis/domain/repository/UserRepository.java
@@ -0,0 +1,10 @@
+package com.baeldung.boot.embeddedRedis.domain.repository;
+
+import com.baeldung.boot.embeddedRedis.domain.User;
+import org.springframework.data.repository.CrudRepository;
+
+import java.util.UUID;
+
+public interface UserRepository extends CrudRepository {
+
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/testing/Employee.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/testing/Employee.java
new file mode 100644
index 0000000000..2921ecc609
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/testing/Employee.java
@@ -0,0 +1,46 @@
+package com.baeldung.boot.testing;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+import javax.validation.constraints.Size;
+import java.util.Date;
+
+@Entity
+@Table(name = "person")
+public class Employee {
+
+ public Employee() {
+ }
+
+ public Employee(String name) {
+ this.name = name;
+ }
+
+ @Id
+ @GeneratedValue(strategy = GenerationType.AUTO)
+ private Long id;
+
+ @Size(min = 3, max = 20)
+ private String name;
+
+ private Date birthday;
+
+ public Long getId() {
+ return id;
+ }
+
+ public void setId(Long id) {
+ this.id = id;
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public void setName(String name) {
+ this.name = name;
+ }
+}
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/testing/EmployeeRepository.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/testing/EmployeeRepository.java
new file mode 100644
index 0000000000..bcef5231e0
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/testing/EmployeeRepository.java
@@ -0,0 +1,17 @@
+package com.baeldung.boot.testing;
+
+import java.util.List;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
+
+@Repository
+@Transactional
+public interface EmployeeRepository extends JpaRepository {
+
+ public Employee findByName(String name);
+
+ public List findAll();
+
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/testing/EmployeeRestController.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/testing/EmployeeRestController.java
new file mode 100644
index 0000000000..b52d38e028
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/testing/EmployeeRestController.java
@@ -0,0 +1,33 @@
+package com.baeldung.boot.testing;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/api")
+public class EmployeeRestController {
+
+ @Autowired
+ private EmployeeService employeeService;
+
+ @PostMapping("/employees")
+ public ResponseEntity createEmployee(@RequestBody Employee employee) {
+ HttpStatus status = HttpStatus.CREATED;
+ Employee saved = employeeService.save(employee);
+ return new ResponseEntity<>(saved, status);
+ }
+
+ @GetMapping("/employees")
+ public List getAllEmployees() {
+ return employeeService.getAllEmployees();
+ }
+
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/testing/EmployeeService.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/testing/EmployeeService.java
new file mode 100644
index 0000000000..6fc48a3c3d
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/testing/EmployeeService.java
@@ -0,0 +1,16 @@
+package com.baeldung.boot.testing;
+
+import java.util.List;
+
+public interface EmployeeService {
+
+ public Employee getEmployeeById(Long id);
+
+ public Employee getEmployeeByName(String name);
+
+ public List getAllEmployees();
+
+ public boolean exists(String email);
+
+ public Employee save(Employee employee);
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/testing/EmployeeServiceImpl.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/testing/EmployeeServiceImpl.java
new file mode 100644
index 0000000000..7d5ec4a05d
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/boot/testing/EmployeeServiceImpl.java
@@ -0,0 +1,43 @@
+package com.baeldung.boot.testing;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+@Transactional
+public class EmployeeServiceImpl implements EmployeeService {
+
+ @Autowired
+ private EmployeeRepository employeeRepository;
+
+ @Override
+ public Employee getEmployeeById(Long id) {
+ return employeeRepository.findById(id).orElse(null);
+ }
+
+ @Override
+ public Employee getEmployeeByName(String name) {
+ return employeeRepository.findByName(name);
+ }
+
+ @Override
+ public boolean exists(String name) {
+ if (employeeRepository.findByName(name) != null) {
+ return true;
+ }
+ return false;
+ }
+
+ @Override
+ public Employee save(Employee employee) {
+ return employeeRepository.save(employee);
+ }
+
+ @Override
+ public List getAllEmployees() {
+ return employeeRepository.findAll();
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/prevent/commandline/application/runner/execution/ApplicationCommandLineRunnerApp.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/prevent/commandline/application/runner/execution/ApplicationCommandLineRunnerApp.java
new file mode 100644
index 0000000000..76e18dfd2f
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/prevent/commandline/application/runner/execution/ApplicationCommandLineRunnerApp.java
@@ -0,0 +1,11 @@
+package com.baeldung.prevent.commandline.application.runner.execution;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class ApplicationCommandLineRunnerApp {
+ public static void main(String[] args) {
+ SpringApplication.run(ApplicationCommandLineRunnerApp.class, args);
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/prevent/commandline/application/runner/execution/ApplicationRunnerTaskExecutor.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/prevent/commandline/application/runner/execution/ApplicationRunnerTaskExecutor.java
new file mode 100644
index 0000000000..3bf08491bf
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/prevent/commandline/application/runner/execution/ApplicationRunnerTaskExecutor.java
@@ -0,0 +1,27 @@
+package com.baeldung.prevent.commandline.application.runner.execution;
+
+import org.springframework.boot.ApplicationArguments;
+import org.springframework.boot.ApplicationRunner;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.context.annotation.Profile;
+import org.springframework.stereotype.Component;
+
+@Profile("!test")
+@ConditionalOnProperty(
+ prefix = "application.runner",
+ value = "enabled",
+ havingValue = "true",
+ matchIfMissing = true)
+@Component
+public class ApplicationRunnerTaskExecutor implements ApplicationRunner {
+ private TaskService taskService;
+
+ public ApplicationRunnerTaskExecutor(TaskService taskService) {
+ this.taskService = taskService;
+ }
+
+ @Override
+ public void run(ApplicationArguments args) throws Exception {
+ taskService.execute("application runner task");
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/prevent/commandline/application/runner/execution/CommandLineTaskExecutor.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/prevent/commandline/application/runner/execution/CommandLineTaskExecutor.java
new file mode 100644
index 0000000000..38fd3b9c0a
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/prevent/commandline/application/runner/execution/CommandLineTaskExecutor.java
@@ -0,0 +1,26 @@
+package com.baeldung.prevent.commandline.application.runner.execution;
+
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.context.annotation.Profile;
+import org.springframework.stereotype.Component;
+
+@Profile("!test")
+@ConditionalOnProperty(
+ prefix = "command.line.runner",
+ value = "enabled",
+ havingValue = "true",
+ matchIfMissing = true)
+@Component
+public class CommandLineTaskExecutor implements CommandLineRunner {
+ private TaskService taskService;
+
+ public CommandLineTaskExecutor(TaskService taskService) {
+ this.taskService = taskService;
+ }
+
+ @Override
+ public void run(String... args) throws Exception {
+ taskService.execute("command line runner task");
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/prevent/commandline/application/runner/execution/TaskService.java b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/prevent/commandline/application/runner/execution/TaskService.java
new file mode 100644
index 0000000000..dac437e72d
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/java/com/baeldung/prevent/commandline/application/runner/execution/TaskService.java
@@ -0,0 +1,14 @@
+package com.baeldung.prevent.commandline.application.runner.execution;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Service;
+
+@Service
+public class TaskService {
+ private static Logger logger = LoggerFactory.getLogger(TaskService.class);
+
+ public void execute(String task) {
+ logger.info("do " + task);
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/main/resources/application-test.properties b/spring-boot-modules/spring-boot-testing/src/main/resources/application-test.properties
new file mode 100644
index 0000000000..8d5e86ba26
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/resources/application-test.properties
@@ -0,0 +1,3 @@
+
+# test properties
+spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/main/resources/application.properties b/spring-boot-modules/spring-boot-testing/src/main/resources/application.properties
new file mode 100644
index 0000000000..70cae370a4
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/resources/application.properties
@@ -0,0 +1,8 @@
+# embedded redis
+spring.redis.host= localhost
+spring.redis.port= 6379
+
+# security
+spring.security.user.name=john
+spring.security.user.password=123
+
diff --git a/spring-boot-modules/spring-boot-testing/src/main/resources/persistence-generic-entity.properties b/spring-boot-modules/spring-boot-testing/src/main/resources/persistence-generic-entity.properties
new file mode 100644
index 0000000000..b19304cb1f
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/resources/persistence-generic-entity.properties
@@ -0,0 +1,8 @@
+jdbc.driverClassName=org.h2.Driver
+jdbc.url=jdbc:h2:mem:db;DB_CLOSE_DELAY=-1
+jdbc.user=sa
+jdbc.pass=sa
+
+hibernate.dialect=org.hibernate.dialect.H2Dialect
+hibernate.show_sql=true
+hibernate.hbm2ddl.auto=create-drop
diff --git a/spring-boot-modules/spring-boot-testing/src/main/resources/property-validation.properties b/spring-boot-modules/spring-boot-testing/src/main/resources/property-validation.properties
new file mode 100644
index 0000000000..6b4c881dc0
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/main/resources/property-validation.properties
@@ -0,0 +1,4 @@
+validate.propertiesMap.first=prop1
+validate.propertiesMap.second=prop2
+
+validate.mail_config.address=user1@test
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/test/groovy/com/baeldung/boot/LoadContextTest.groovy b/spring-boot-modules/spring-boot-testing/src/test/groovy/com/baeldung/boot/LoadContextTest.groovy
new file mode 100644
index 0000000000..85b0a4b89b
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/groovy/com/baeldung/boot/LoadContextTest.groovy
@@ -0,0 +1,23 @@
+package com.baeldung.boot
+
+import com.baeldung.boot.controller.rest.WebController
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.test.context.SpringBootTest
+import spock.lang.Narrative
+import spock.lang.Specification
+import spock.lang.Title
+
+@Title("Application Specification")
+@Narrative("Specification which beans are expected")
+@SpringBootTest
+class LoadContextTest extends Specification {
+
+ @Autowired(required = false)
+ private WebController webController
+
+
+ def "when context is loaded then all expected beans are created"() {
+ expect: "the WebController is created"
+ webController
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/test/groovy/com/baeldung/boot/WebControllerTest.groovy b/spring-boot-modules/spring-boot-testing/src/test/groovy/com/baeldung/boot/WebControllerTest.groovy
new file mode 100644
index 0000000000..fe53abd241
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/groovy/com/baeldung/boot/WebControllerTest.groovy
@@ -0,0 +1,46 @@
+package com.baeldung.boot
+
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration
+import org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.test.web.servlet.MockMvc
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers
+import spock.lang.Narrative
+import spock.lang.Specification
+import spock.lang.Title
+
+@Title("WebController Specification")
+@Narrative("The Specification of the behaviour of the WebController. It can greet a person, change the name and reset it to 'world'")
+@SpringBootTest
+@AutoConfigureMockMvc
+@EnableAutoConfiguration(exclude= SecurityAutoConfiguration.class)
+class WebControllerTest extends Specification {
+
+ @Autowired
+ private MockMvc mvc
+
+ def "when get is performed then the response has status 200 and content is 'Hello world!'"() {
+ expect: "Status is 200 and the response is 'Hello world!'"
+ mvc.perform(MockMvcRequestBuilders.get("/hello")).andExpect(MockMvcResultMatchers.status().isOk()).andReturn().response.contentAsString == "Hello world!"
+ }
+
+ def "when set and delete are performed then the response has status 204 and content changes as expected"() {
+ given: "a new name"
+ def NAME = "Emmy"
+
+ when: "the name is set"
+ mvc.perform(MockMvcRequestBuilders.put("/hello").content(NAME)).andExpect(MockMvcResultMatchers.status().isNoContent())
+
+ then: "the salutation uses the new name"
+ mvc.perform(MockMvcRequestBuilders.get("/hello")).andExpect(MockMvcResultMatchers.status().isOk()).andReturn().response.contentAsString == "Hello $NAME!"
+
+ when: "the name is deleted"
+ mvc.perform(MockMvcRequestBuilders.delete("/hello")).andExpect(MockMvcResultMatchers.status().isNoContent())
+
+ then: "the salutation uses the default name"
+ mvc.perform(MockMvcRequestBuilders.get("/hello")).andExpect(MockMvcResultMatchers.status().isOk()).andReturn().response.contentAsString == "Hello world!"
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/test/groovy/com/baeldung/boot/WebControllerTest.groovy alias b/spring-boot-modules/spring-boot-testing/src/test/groovy/com/baeldung/boot/WebControllerTest.groovy alias
new file mode 100644
index 0000000000..f2fc2f48e2
Binary files /dev/null and b/spring-boot-modules/spring-boot-testing/src/test/groovy/com/baeldung/boot/WebControllerTest.groovy alias differ
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig1IntegrationTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig1IntegrationTest.java
new file mode 100644
index 0000000000..2ca0c74901
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig1IntegrationTest.java
@@ -0,0 +1,32 @@
+package com.baeldung.autoconfig.exclude;
+
+import com.baeldung.boot.Application;
+import io.restassured.RestAssured;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.boot.web.server.LocalServerPort;
+import org.springframework.http.HttpStatus;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import static org.junit.Assert.assertEquals;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = Application.class, webEnvironment = WebEnvironment.RANDOM_PORT)
+@TestPropertySource(properties = "spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration")
+public class ExcludeAutoConfig1IntegrationTest {
+
+ /**
+ * Encapsulates the random port the test server is listening on.
+ */
+ @LocalServerPort
+ private int port;
+
+ @Test
+ public void givenSecurityConfigExcluded_whenAccessHome_thenNoAuthenticationRequired() {
+ int statusCode = RestAssured.get("http://localhost:" + port).statusCode();
+ assertEquals(HttpStatus.OK.value(), statusCode);
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig2IntegrationTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig2IntegrationTest.java
new file mode 100644
index 0000000000..c0bd6570a1
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig2IntegrationTest.java
@@ -0,0 +1,32 @@
+package com.baeldung.autoconfig.exclude;
+
+import com.baeldung.boot.Application;
+import io.restassured.RestAssured;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.boot.web.server.LocalServerPort;
+import org.springframework.http.HttpStatus;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import static org.junit.Assert.assertEquals;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = Application.class, webEnvironment = WebEnvironment.RANDOM_PORT)
+@ActiveProfiles("test")
+public class ExcludeAutoConfig2IntegrationTest {
+
+ /**
+ * Encapsulates the random port the test server is listening on.
+ */
+ @LocalServerPort
+ private int port;
+
+ @Test
+ public void givenSecurityConfigExcluded_whenAccessHome_thenNoAuthenticationRequired() {
+ int statusCode = RestAssured.get("http://localhost:" + port).statusCode();
+ assertEquals(HttpStatus.OK.value(), statusCode);
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig3IntegrationTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig3IntegrationTest.java
new file mode 100644
index 0000000000..1642d4b932
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig3IntegrationTest.java
@@ -0,0 +1,33 @@
+package com.baeldung.autoconfig.exclude;
+
+import com.baeldung.boot.Application;
+import io.restassured.RestAssured;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.boot.web.server.LocalServerPort;
+import org.springframework.http.HttpStatus;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import static org.junit.Assert.assertEquals;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = Application.class, webEnvironment = WebEnvironment.RANDOM_PORT)
+@EnableAutoConfiguration(exclude=SecurityAutoConfiguration.class)
+public class ExcludeAutoConfig3IntegrationTest {
+
+ /**
+ * Encapsulates the random port the test server is listening on.
+ */
+ @LocalServerPort
+ private int port;
+
+ @Test
+ public void givenSecurityConfigExcluded_whenAccessHome_thenNoAuthenticationRequired() {
+ int statusCode = RestAssured.get("http://localhost:" + port).statusCode();
+ assertEquals(HttpStatus.OK.value(), statusCode);
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig4IntegrationTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig4IntegrationTest.java
new file mode 100644
index 0000000000..1aa453348b
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/ExcludeAutoConfig4IntegrationTest.java
@@ -0,0 +1,29 @@
+package com.baeldung.autoconfig.exclude;
+
+import io.restassured.RestAssured;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.boot.web.server.LocalServerPort;
+import org.springframework.http.HttpStatus;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import static org.junit.Assert.assertEquals;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = TestApplication.class, webEnvironment = WebEnvironment.RANDOM_PORT)
+public class ExcludeAutoConfig4IntegrationTest {
+
+ /**
+ * Encapsulates the random port the test server is listening on.
+ */
+ @LocalServerPort
+ private int port;
+
+ @Test
+ public void givenSecurityConfigExcluded_whenAccessHome_thenNoAuthenticationRequired() {
+ int statusCode = RestAssured.get("http://localhost:" + port).statusCode();
+ assertEquals(HttpStatus.OK.value(), statusCode);
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/TestApplication.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/TestApplication.java
new file mode 100644
index 0000000000..7c162f85ab
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/autoconfig/exclude/TestApplication.java
@@ -0,0 +1,13 @@
+package com.baeldung.autoconfig.exclude;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration;
+
+@SpringBootApplication(scanBasePackages="com.baeldung.boot", exclude=SecurityAutoConfiguration.class)
+public class TestApplication {
+
+ public static void main(String[] args) {
+ SpringApplication.run(TestApplication.class, args);
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/SpringContextTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/SpringContextTest.java
new file mode 100644
index 0000000000..f3c8b9a954
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/SpringContextTest.java
@@ -0,0 +1,15 @@
+package com.baeldung.boot;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = Application.class)
+public class SpringContextTest {
+
+ @Test
+ public void whenSpringContextIsBootstrapped_thenNoExceptions() {
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/autoconfig/AutoConfigIntegrationTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/autoconfig/AutoConfigIntegrationTest.java
new file mode 100644
index 0000000000..44a02c0c80
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/autoconfig/AutoConfigIntegrationTest.java
@@ -0,0 +1,36 @@
+package com.baeldung.boot.autoconfig;
+
+import com.baeldung.boot.Application;
+import io.restassured.RestAssured;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.boot.web.server.LocalServerPort;
+import org.springframework.http.HttpStatus;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import static org.junit.Assert.assertEquals;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = Application.class, webEnvironment = WebEnvironment.RANDOM_PORT)
+public class AutoConfigIntegrationTest {
+
+ /**
+ * Encapsulates the random port the test server is listening on.
+ */
+ @LocalServerPort
+ private int port;
+
+ @Test
+ public void givenNoAuthentication_whenAccessHome_thenUnauthorized() {
+ int statusCode = RestAssured.get("http://localhost:" + port).statusCode();
+ assertEquals(HttpStatus.UNAUTHORIZED.value(), statusCode);
+ }
+
+ @Test
+ public void givenAuthentication_whenAccessHome_thenOK() {
+ int statusCode = RestAssured.given().auth().basic("john", "123").get("http://localhost:" + port).statusCode();
+ assertEquals(HttpStatus.OK.value(), statusCode);
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/configurationproperties/BindingPropertiesToBeanMethodsUnitTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/configurationproperties/BindingPropertiesToBeanMethodsUnitTest.java
new file mode 100644
index 0000000000..82c2a55c32
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/configurationproperties/BindingPropertiesToBeanMethodsUnitTest.java
@@ -0,0 +1,36 @@
+package com.baeldung.boot.configurationproperties;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+
+@ExtendWith(SpringExtension.class)
+@EnableConfigurationProperties(value = ServerConfig.class)
+@ContextConfiguration(classes = ServerConfigFactory.class)
+@TestPropertySource("classpath:server-config-test.properties")
+public class BindingPropertiesToBeanMethodsUnitTest {
+
+ @Autowired
+ @Qualifier("default_bean")
+ private ServerConfig serverConfig;
+
+ @Test
+ void givenBeanAnnotatedMethod_whenBindingProperties_thenAllFieldsAreSet() {
+ assertEquals("192.168.0.2", serverConfig.getAddress()
+ .getIp());
+
+ Map expectedResourcesPath = new HashMap<>();
+ expectedResourcesPath.put("imgs", "/root/def/imgs");
+ assertEquals(expectedResourcesPath, serverConfig.getResourcesPath());
+ }
+}
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/configurationproperties/BindingPropertiesToUserDefinedPOJOUnitTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/configurationproperties/BindingPropertiesToUserDefinedPOJOUnitTest.java
new file mode 100644
index 0000000000..9db906fa04
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/configurationproperties/BindingPropertiesToUserDefinedPOJOUnitTest.java
@@ -0,0 +1,32 @@
+package com.baeldung.boot.configurationproperties;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+
+@ExtendWith(SpringExtension.class)
+@EnableConfigurationProperties(value = ServerConfig.class)
+@TestPropertySource("classpath:server-config-test.properties")
+public class BindingPropertiesToUserDefinedPOJOUnitTest {
+
+ @Autowired
+ private ServerConfig serverConfig;
+
+ @Test
+ void givenUserDefinedPOJO_whenBindingPropertiesFile_thenAllFieldsAreSet() {
+ assertEquals("192.168.0.1", serverConfig.getAddress()
+ .getIp());
+
+ Map expectedResourcesPath = new HashMap<>();
+ expectedResourcesPath.put("imgs", "/root/imgs");
+ assertEquals(expectedResourcesPath, serverConfig.getResourcesPath());
+ }
+}
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/configurationproperties/BindingYMLPropertiesUnitTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/configurationproperties/BindingYMLPropertiesUnitTest.java
new file mode 100644
index 0000000000..99c128997e
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/configurationproperties/BindingYMLPropertiesUnitTest.java
@@ -0,0 +1,33 @@
+package com.baeldung.boot.configurationproperties;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import java.util.HashMap;
+import java.util.Map;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.boot.test.context.ConfigDataApplicationContextInitializer;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+
+@ExtendWith(SpringExtension.class)
+@ContextConfiguration(initializers = ConfigDataApplicationContextInitializer.class)
+@EnableConfigurationProperties(value = ServerConfig.class)
+@ActiveProfiles("test")
+public class BindingYMLPropertiesUnitTest {
+
+ @Autowired
+ private ServerConfig serverConfig;
+
+ @Test
+ void whenBindingYMLConfigFile_thenAllFieldsAreSet() {
+ assertEquals("192.168.0.4", serverConfig.getAddress()
+ .getIp());
+
+ Map expectedResourcesPath = new HashMap<>();
+ expectedResourcesPath.put("imgs", "/etc/test/imgs");
+ assertEquals(expectedResourcesPath, serverConfig.getResourcesPath());
+ }
+}
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/configurationproperties/OverridingConfigurationPropertiesUnitTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/configurationproperties/OverridingConfigurationPropertiesUnitTest.java
new file mode 100644
index 0000000000..2779b0a313
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/configurationproperties/OverridingConfigurationPropertiesUnitTest.java
@@ -0,0 +1,33 @@
+package com.baeldung.boot.configurationproperties;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+
+@ExtendWith(SpringExtension.class)
+@EnableConfigurationProperties(value = MailServer.class)
+@TestPropertySource(properties = { "validate.mail_config.address=new_user@test" })
+public class OverridingConfigurationPropertiesUnitTest {
+
+ @Autowired
+ private MailServer mailServer;
+
+ @Test
+ void givenUsingPropertiesAttribute_whenAssiginingNewValueToProprty_thenSpringUsesNewValue() {
+ assertEquals("new_user@test", mailServer.getMailConfig()
+ .getAddress());
+
+ Map expectedMap = new HashMap<>();
+ expectedMap.put("first", "prop1");
+ expectedMap.put("second", "prop2");
+ assertEquals(expectedMap, mailServer.getPropertiesMap());
+ }
+}
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/configurationproperties/PropertyValidationUnitTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/configurationproperties/PropertyValidationUnitTest.java
new file mode 100644
index 0000000000..939471dd67
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/configurationproperties/PropertyValidationUnitTest.java
@@ -0,0 +1,39 @@
+package com.baeldung.boot.configurationproperties;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import javax.validation.Validation;
+import javax.validation.Validator;
+
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+
+@ExtendWith(SpringExtension.class)
+@EnableConfigurationProperties(value = MailServer.class)
+@TestPropertySource("classpath:property-validation-test.properties")
+public class PropertyValidationUnitTest {
+
+ @Autowired
+ private MailServer mailServer;
+
+ private static Validator propertyValidator;
+
+ @BeforeAll
+ public static void setup() {
+ propertyValidator = Validation.buildDefaultValidatorFactory()
+ .getValidator();
+ }
+
+ @Test
+ void whenBindingPropertiesToValidatedBeans_thenConstrainsAreChecked() {
+ assertEquals(0, propertyValidator.validate(mailServer.getPropertiesMap())
+ .size());
+ assertEquals(0, propertyValidator.validate(mailServer.getMailConfig())
+ .size());
+ }
+}
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/configurationproperties/SpringPropertiesConversionUnitTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/configurationproperties/SpringPropertiesConversionUnitTest.java
new file mode 100644
index 0000000000..3f2da2a669
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/configurationproperties/SpringPropertiesConversionUnitTest.java
@@ -0,0 +1,44 @@
+package com.baeldung.boot.configurationproperties;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.time.Duration;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+import org.springframework.util.unit.DataSize;
+
+@ExtendWith(SpringExtension.class)
+@EnableConfigurationProperties(value = PropertyConversion.class)
+@ContextConfiguration(classes = CustomCredentialsConverter.class)
+@TestPropertySource("classpath:spring-conversion-test.properties")
+public class SpringPropertiesConversionUnitTest {
+
+ @Autowired
+ private PropertyConversion propertyConversion;
+
+ @Test
+ void whenUsingSpringDefaultSizeConversion_thenDataSizeObjectIsSet() {
+ assertEquals(DataSize.ofMegabytes(500), propertyConversion.getUploadSpeed());
+ assertEquals(DataSize.ofGigabytes(10), propertyConversion.getDownloadSpeed());
+ }
+
+ @Test
+ void whenUsingSpringDefaultDurationConversion_thenDurationObjectIsSet() {
+ assertEquals(Duration.ofDays(1), propertyConversion.getBackupDay());
+ assertEquals(Duration.ofHours(8), propertyConversion.getBackupHour());
+ }
+
+ @Test
+ void whenRegisteringCustomCredentialsConverter_thenCredentialsAreParsed() {
+ assertEquals("user", propertyConversion.getCredentials()
+ .getUsername());
+ assertEquals("123", propertyConversion.getCredentials()
+ .getPassword());
+ }
+}
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/embeddedRedis/TestRedisConfiguration.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/embeddedRedis/TestRedisConfiguration.java
new file mode 100644
index 0000000000..b4748bcd38
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/embeddedRedis/TestRedisConfiguration.java
@@ -0,0 +1,28 @@
+package com.baeldung.boot.embeddedRedis;
+
+import com.baeldung.boot.embeddedRedis.configuration.RedisProperties;
+import org.springframework.boot.test.context.TestConfiguration;
+import redis.embedded.RedisServer;
+
+import javax.annotation.PostConstruct;
+import javax.annotation.PreDestroy;
+
+@TestConfiguration
+public class TestRedisConfiguration {
+
+ private final RedisServer redisServer;
+
+ public TestRedisConfiguration(final RedisProperties redisProperties) {
+ this.redisServer = new RedisServer(redisProperties.getRedisPort());
+ }
+
+ @PostConstruct
+ public void postConstruct() {
+ redisServer.start();
+ }
+
+ @PreDestroy
+ public void preDestroy() {
+ redisServer.stop();
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/embeddedRedis/domain/repository/UserRepositoryIntegrationTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/embeddedRedis/domain/repository/UserRepositoryIntegrationTest.java
new file mode 100644
index 0000000000..9577ccf0e8
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/embeddedRedis/domain/repository/UserRepositoryIntegrationTest.java
@@ -0,0 +1,31 @@
+package com.baeldung.boot.embeddedRedis.domain.repository;
+
+import com.baeldung.boot.embeddedRedis.TestRedisConfiguration;
+import com.baeldung.boot.embeddedRedis.domain.User;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import java.util.UUID;
+
+import static org.junit.Assert.assertNotNull;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = TestRedisConfiguration.class)
+public class UserRepositoryIntegrationTest {
+
+ @Autowired
+ private UserRepository userRepository;
+
+ @Test
+ public void shouldSaveUser_toRedis() {
+ final UUID id = UUID.randomUUID();
+ final User user = new User(id, "name");
+
+ final User saved = userRepository.save(user);
+
+ assertNotNull(saved);
+ }
+}
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/testing/EmployeeControllerIntegrationTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/testing/EmployeeControllerIntegrationTest.java
new file mode 100644
index 0000000000..c51113a023
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/testing/EmployeeControllerIntegrationTest.java
@@ -0,0 +1,73 @@
+package com.baeldung.boot.testing;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.Matchers.hasSize;
+import static org.mockito.BDDMockito.given;
+import static org.mockito.Mockito.reset;
+import static org.mockito.Mockito.verify;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+import java.util.Arrays;
+import java.util.List;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mockito;
+import org.mockito.internal.verification.VerificationModeFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration;
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.http.MediaType;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.servlet.MockMvc;
+
+import com.baeldung.boot.testing.Employee;
+import com.baeldung.boot.testing.EmployeeRestController;
+import com.baeldung.boot.testing.EmployeeService;
+
+@RunWith(SpringRunner.class)
+@WebMvcTest(value = EmployeeRestController.class, excludeAutoConfiguration = SecurityAutoConfiguration.class)
+public class EmployeeControllerIntegrationTest {
+
+ @Autowired
+ private MockMvc mvc;
+
+ @MockBean
+ private EmployeeService service;
+
+ @Before
+ public void setUp() throws Exception {
+ }
+
+ @Test
+ public void whenPostEmployee_thenCreateEmployee() throws Exception {
+ Employee alex = new Employee("alex");
+ given(service.save(Mockito.any())).willReturn(alex);
+
+ mvc.perform(post("/api/employees").contentType(MediaType.APPLICATION_JSON).content(JsonUtil.toJson(alex))).andExpect(status().isCreated()).andExpect(jsonPath("$.name", is("alex")));
+ verify(service, VerificationModeFactory.times(1)).save(Mockito.any());
+ reset(service);
+ }
+
+ @Test
+ public void givenEmployees_whenGetEmployees_thenReturnJsonArray() throws Exception {
+ Employee alex = new Employee("alex");
+ Employee john = new Employee("john");
+ Employee bob = new Employee("bob");
+
+ List allEmployees = Arrays.asList(alex, john, bob);
+
+ given(service.getAllEmployees()).willReturn(allEmployees);
+
+ mvc.perform(get("/api/employees").contentType(MediaType.APPLICATION_JSON)).andExpect(status().isOk()).andExpect(jsonPath("$", hasSize(3))).andExpect(jsonPath("$[0].name", is(alex.getName()))).andExpect(jsonPath("$[1].name", is(john.getName())))
+ .andExpect(jsonPath("$[2].name", is(bob.getName())));
+ verify(service, VerificationModeFactory.times(1)).getAllEmployees();
+ reset(service);
+ }
+
+}
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/testing/EmployeeRepositoryIntegrationTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/testing/EmployeeRepositoryIntegrationTest.java
new file mode 100644
index 0000000000..b3a7316764
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/testing/EmployeeRepositoryIntegrationTest.java
@@ -0,0 +1,72 @@
+package com.baeldung.boot.testing;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+import org.springframework.boot.test.autoconfigure.orm.jpa.TestEntityManager;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import com.baeldung.boot.testing.Employee;
+import com.baeldung.boot.testing.EmployeeRepository;
+
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@RunWith(SpringRunner.class)
+@DataJpaTest
+public class EmployeeRepositoryIntegrationTest {
+
+ @Autowired
+ private TestEntityManager entityManager;
+
+ @Autowired
+ private EmployeeRepository employeeRepository;
+
+ @Test
+ public void whenFindByName_thenReturnEmployee() {
+ Employee alex = new Employee("alex");
+ entityManager.persistAndFlush(alex);
+
+ Employee found = employeeRepository.findByName(alex.getName());
+ assertThat(found.getName()).isEqualTo(alex.getName());
+ }
+
+ @Test
+ public void whenInvalidName_thenReturnNull() {
+ Employee fromDb = employeeRepository.findByName("doesNotExist");
+ assertThat(fromDb).isNull();
+ }
+
+ @Test
+ public void whenFindById_thenReturnEmployee() {
+ Employee emp = new Employee("test");
+ entityManager.persistAndFlush(emp);
+
+ Employee fromDb = employeeRepository.findById(emp.getId()).orElse(null);
+ assertThat(fromDb.getName()).isEqualTo(emp.getName());
+ }
+
+ @Test
+ public void whenInvalidId_thenReturnNull() {
+ Employee fromDb = employeeRepository.findById(-11l).orElse(null);
+ assertThat(fromDb).isNull();
+ }
+
+ @Test
+ public void givenSetOfEmployees_whenFindAll_thenReturnAllEmployees() {
+ Employee alex = new Employee("alex");
+ Employee ron = new Employee("ron");
+ Employee bob = new Employee("bob");
+
+ entityManager.persist(alex);
+ entityManager.persist(bob);
+ entityManager.persist(ron);
+ entityManager.flush();
+
+ List allEmployees = employeeRepository.findAll();
+
+ assertThat(allEmployees).hasSize(3).extracting(Employee::getName).containsOnly(alex.getName(), ron.getName(), bob.getName());
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/testing/EmployeeRestControllerIntegrationTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/testing/EmployeeRestControllerIntegrationTest.java
new file mode 100644
index 0000000000..d13fcd79aa
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/testing/EmployeeRestControllerIntegrationTest.java
@@ -0,0 +1,86 @@
+package com.baeldung.boot.testing;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.Matchers.greaterThanOrEqualTo;
+import static org.hamcrest.Matchers.hasSize;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+import java.io.IOException;
+import java.util.List;
+
+import org.junit.After;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration;
+import org.springframework.boot.test.autoconfigure.jdbc.AutoConfigureTestDatabase;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.http.MediaType;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.servlet.MockMvc;
+
+import com.baeldung.boot.Application;
+import com.baeldung.boot.testing.Employee;
+import com.baeldung.boot.testing.EmployeeRepository;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT, classes = Application.class)
+@AutoConfigureMockMvc
+@EnableAutoConfiguration(exclude=SecurityAutoConfiguration.class)
+// @TestPropertySource(locations = "classpath:application-integrationtest.properties")
+@AutoConfigureTestDatabase
+public class EmployeeRestControllerIntegrationTest {
+
+ @Autowired
+ private MockMvc mvc;
+
+ @Autowired
+ private EmployeeRepository repository;
+
+ @After
+ public void resetDb() {
+ repository.deleteAll();
+ }
+
+ @Test
+ public void whenValidInput_thenCreateEmployee() throws IOException, Exception {
+ Employee bob = new Employee("bob");
+ mvc.perform(post("/api/employees").contentType(MediaType.APPLICATION_JSON).content(JsonUtil.toJson(bob)));
+
+ List found = repository.findAll();
+ assertThat(found).extracting(Employee::getName).containsOnly("bob");
+ }
+
+ @Test
+ public void givenEmployees_whenGetEmployees_thenStatus200() throws Exception {
+ createTestEmployee("bob");
+ createTestEmployee("alex");
+
+ // @formatter:off
+ mvc.perform(get("/api/employees").contentType(MediaType.APPLICATION_JSON))
+ .andDo(print())
+ .andExpect(status().isOk())
+ .andExpect(content().contentTypeCompatibleWith(MediaType.APPLICATION_JSON))
+ .andExpect(jsonPath("$", hasSize(greaterThanOrEqualTo(2))))
+ .andExpect(jsonPath("$[0].name", is("bob")))
+ .andExpect(jsonPath("$[1].name", is("alex")));
+ // @formatter:on
+ }
+
+ //
+
+ private void createTestEmployee(String name) {
+ Employee emp = new Employee(name);
+ repository.saveAndFlush(emp);
+ }
+
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/testing/EmployeeServiceImplIntegrationTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/testing/EmployeeServiceImplIntegrationTest.java
new file mode 100644
index 0000000000..3176a7c75a
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/testing/EmployeeServiceImplIntegrationTest.java
@@ -0,0 +1,132 @@
+package com.baeldung.boot.testing;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.Optional;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mockito;
+import org.mockito.internal.verification.VerificationModeFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.TestConfiguration;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.context.annotation.Bean;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import com.baeldung.boot.testing.Employee;
+import com.baeldung.boot.testing.EmployeeRepository;
+import com.baeldung.boot.testing.EmployeeService;
+import com.baeldung.boot.testing.EmployeeServiceImpl;
+
+@RunWith(SpringRunner.class)
+public class EmployeeServiceImplIntegrationTest {
+
+ @TestConfiguration
+ static class EmployeeServiceImplTestContextConfiguration {
+ @Bean
+ public EmployeeService employeeService() {
+ return new EmployeeServiceImpl();
+ }
+ }
+
+ @Autowired
+ private EmployeeService employeeService;
+
+ @MockBean
+ private EmployeeRepository employeeRepository;
+
+ @Before
+ public void setUp() {
+ Employee john = new Employee("john");
+ john.setId(11L);
+
+ Employee bob = new Employee("bob");
+ Employee alex = new Employee("alex");
+
+ List allEmployees = Arrays.asList(john, bob, alex);
+
+ Mockito.when(employeeRepository.findByName(john.getName())).thenReturn(john);
+ Mockito.when(employeeRepository.findByName(alex.getName())).thenReturn(alex);
+ Mockito.when(employeeRepository.findByName("wrong_name")).thenReturn(null);
+ Mockito.when(employeeRepository.findById(john.getId())).thenReturn(Optional.of(john));
+ Mockito.when(employeeRepository.findAll()).thenReturn(allEmployees);
+ Mockito.when(employeeRepository.findById(-99L)).thenReturn(Optional.empty());
+ }
+
+ @Test
+ public void whenValidName_thenEmployeeShouldBeFound() {
+ String name = "alex";
+ Employee found = employeeService.getEmployeeByName(name);
+
+ assertThat(found.getName()).isEqualTo(name);
+ }
+
+ @Test
+ public void whenInValidName_thenEmployeeShouldNotBeFound() {
+ Employee fromDb = employeeService.getEmployeeByName("wrong_name");
+ assertThat(fromDb).isNull();
+
+ verifyFindByNameIsCalledOnce("wrong_name");
+ }
+
+ @Test
+ public void whenValidName_thenEmployeeShouldExist() {
+ boolean doesEmployeeExist = employeeService.exists("john");
+ assertThat(doesEmployeeExist).isEqualTo(true);
+
+ verifyFindByNameIsCalledOnce("john");
+ }
+
+ @Test
+ public void whenNonExistingName_thenEmployeeShouldNotExist() {
+ boolean doesEmployeeExist = employeeService.exists("some_name");
+ assertThat(doesEmployeeExist).isEqualTo(false);
+
+ verifyFindByNameIsCalledOnce("some_name");
+ }
+
+ @Test
+ public void whenValidId_thenEmployeeShouldBeFound() {
+ Employee fromDb = employeeService.getEmployeeById(11L);
+ assertThat(fromDb.getName()).isEqualTo("john");
+
+ verifyFindByIdIsCalledOnce();
+ }
+
+ @Test
+ public void whenInValidId_thenEmployeeShouldNotBeFound() {
+ Employee fromDb = employeeService.getEmployeeById(-99L);
+ verifyFindByIdIsCalledOnce();
+ assertThat(fromDb).isNull();
+ }
+
+ @Test
+ public void given3Employees_whengetAll_thenReturn3Records() {
+ Employee alex = new Employee("alex");
+ Employee john = new Employee("john");
+ Employee bob = new Employee("bob");
+
+ List allEmployees = employeeService.getAllEmployees();
+ verifyFindAllEmployeesIsCalledOnce();
+ assertThat(allEmployees).hasSize(3).extracting(Employee::getName).contains(alex.getName(), john.getName(), bob.getName());
+ }
+
+ private void verifyFindByNameIsCalledOnce(String name) {
+ Mockito.verify(employeeRepository, VerificationModeFactory.times(1)).findByName(name);
+ Mockito.reset(employeeRepository);
+ }
+
+ private void verifyFindByIdIsCalledOnce() {
+ Mockito.verify(employeeRepository, VerificationModeFactory.times(1)).findById(Mockito.anyLong());
+ Mockito.reset(employeeRepository);
+ }
+
+ private void verifyFindAllEmployeesIsCalledOnce() {
+ Mockito.verify(employeeRepository, VerificationModeFactory.times(1)).findAll();
+ Mockito.reset(employeeRepository);
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/testing/JsonUtil.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/testing/JsonUtil.java
new file mode 100644
index 0000000000..49d018dde8
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/boot/testing/JsonUtil.java
@@ -0,0 +1,14 @@
+package com.baeldung.boot.testing;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import java.io.IOException;
+
+class JsonUtil {
+ static byte[] toJson(Object object) throws IOException {
+ ObjectMapper mapper = new ObjectMapper();
+ mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
+ return mapper.writeValueAsBytes(object);
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/prevent/commandline/application/runner/execution/LoadSpringContextIntegrationTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/prevent/commandline/application/runner/execution/LoadSpringContextIntegrationTest.java
new file mode 100644
index 0000000000..483c67b7a2
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/prevent/commandline/application/runner/execution/LoadSpringContextIntegrationTest.java
@@ -0,0 +1,43 @@
+package com.baeldung.prevent.commandline.application.runner.execution;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.springframework.boot.ApplicationRunner;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.test.context.ConfigDataApplicationContextInitializer;
+import org.springframework.boot.test.mock.mockito.SpyBean;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+
+import com.baeldung.prevent.commandline.application.runner.execution.ApplicationCommandLineRunnerApp;
+import com.baeldung.prevent.commandline.application.runner.execution.TaskService;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+
+@ExtendWith(SpringExtension.class)
+@ContextConfiguration(classes = { ApplicationCommandLineRunnerApp.class },
+ initializers = ConfigDataApplicationContextInitializer.class)
+public class LoadSpringContextIntegrationTest {
+ @SpyBean
+ TaskService taskService;
+
+ @SpyBean
+ CommandLineRunner commandLineRunner;
+
+ @SpyBean
+ ApplicationRunner applicationRunner;
+
+ @Test
+ void whenContextLoads_thenRunnersDoNotRun() throws Exception {
+ assertNotNull(taskService);
+ assertNotNull(commandLineRunner);
+ assertNotNull(applicationRunner);
+
+ verify(taskService, times(0)).execute(any());
+ verify(commandLineRunner, times(0)).run(any());
+ verify(applicationRunner, times(0)).run(any());
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/prevent/commandline/application/runner/execution/RunApplicationIntegrationTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/prevent/commandline/application/runner/execution/RunApplicationIntegrationTest.java
new file mode 100644
index 0000000000..26a7339f1d
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/prevent/commandline/application/runner/execution/RunApplicationIntegrationTest.java
@@ -0,0 +1,26 @@
+package com.baeldung.prevent.commandline.application.runner.execution;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.mock.mockito.SpyBean;
+
+import com.baeldung.prevent.commandline.application.runner.execution.ApplicationRunnerTaskExecutor;
+import com.baeldung.prevent.commandline.application.runner.execution.CommandLineTaskExecutor;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+
+@SpringBootTest
+class RunApplicationIntegrationTest {
+ @SpyBean
+ ApplicationRunnerTaskExecutor applicationRunnerTaskExecutor;
+ @SpyBean
+ CommandLineTaskExecutor commandLineTaskExecutor;
+
+ @Test
+ void whenContextLoads_thenRunnersRun() throws Exception {
+ verify(applicationRunnerTaskExecutor, times(1)).run(any());
+ verify(commandLineTaskExecutor, times(1)).run(any());
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/prevent/commandline/application/runner/execution/RunApplicationWithTestProfileIntegrationTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/prevent/commandline/application/runner/execution/RunApplicationWithTestProfileIntegrationTest.java
new file mode 100644
index 0000000000..333cd2ab91
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/prevent/commandline/application/runner/execution/RunApplicationWithTestProfileIntegrationTest.java
@@ -0,0 +1,33 @@
+package com.baeldung.prevent.commandline.application.runner.execution;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.NoSuchBeanDefinitionException;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.context.ApplicationContext;
+import org.springframework.test.context.ActiveProfiles;
+
+import com.baeldung.prevent.commandline.application.runner.execution.ApplicationRunnerTaskExecutor;
+import com.baeldung.prevent.commandline.application.runner.execution.CommandLineTaskExecutor;
+import com.baeldung.prevent.commandline.application.runner.execution.TaskService;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+@ActiveProfiles("test")
+@SpringBootTest
+class RunApplicationWithTestProfileIntegrationTest {
+ @Autowired
+ private ApplicationContext context;
+
+ @Test
+ void whenContextLoads_thenRunnersAreNotLoaded() {
+ assertNotNull(context.getBean(TaskService.class));
+ assertThrows(NoSuchBeanDefinitionException.class,
+ () -> context.getBean(CommandLineTaskExecutor.class),
+ "CommandLineRunner should not be loaded during this integration test");
+ assertThrows(NoSuchBeanDefinitionException.class,
+ () -> context.getBean(ApplicationRunnerTaskExecutor.class),
+ "ApplicationRunner should not be loaded during this integration test");
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/prevent/commandline/application/runner/execution/RunApplicationWithTestPropertiesIntegrationTest.java b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/prevent/commandline/application/runner/execution/RunApplicationWithTestPropertiesIntegrationTest.java
new file mode 100644
index 0000000000..264a06a41e
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/java/com/baeldung/prevent/commandline/application/runner/execution/RunApplicationWithTestPropertiesIntegrationTest.java
@@ -0,0 +1,32 @@
+package com.baeldung.prevent.commandline.application.runner.execution;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.NoSuchBeanDefinitionException;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.context.ApplicationContext;
+
+import com.baeldung.prevent.commandline.application.runner.execution.ApplicationRunnerTaskExecutor;
+import com.baeldung.prevent.commandline.application.runner.execution.CommandLineTaskExecutor;
+import com.baeldung.prevent.commandline.application.runner.execution.TaskService;
+
+@SpringBootTest(properties = {
+ "command.line.runner.enabled=false",
+ "application.runner.enabled=false" })
+class RunApplicationWithTestPropertiesIntegrationTest {
+ @Autowired
+ private ApplicationContext context;
+
+ @Test
+ void whenContextLoads_thenRunnersAreNotLoaded() {
+ assertNotNull(context.getBean(TaskService.class));
+ assertThrows(NoSuchBeanDefinitionException.class,
+ () -> context.getBean(CommandLineTaskExecutor.class),
+ "CommandLineRunner should not be loaded during this integration test");
+ assertThrows(NoSuchBeanDefinitionException.class,
+ () -> context.getBean(ApplicationRunnerTaskExecutor.class),
+ "ApplicationRunner should not be loaded during this integration test");
+ }
+}
diff --git a/spring-boot-modules/spring-boot-testing/src/test/resources/application-integrationtest.properties b/spring-boot-modules/spring-boot-testing/src/test/resources/application-integrationtest.properties
new file mode 100644
index 0000000000..bcd03226d3
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/resources/application-integrationtest.properties
@@ -0,0 +1,4 @@
+spring.datasource.url=jdbc:mysql://localhost:3306/employee_int_test
+spring.datasource.username=root
+spring.datasource.password=root
+
diff --git a/spring-boot-modules/spring-boot-testing/src/test/resources/application-test.properties b/spring-boot-modules/spring-boot-testing/src/test/resources/application-test.properties
new file mode 100644
index 0000000000..a2c9b6d480
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/resources/application-test.properties
@@ -0,0 +1,2 @@
+# test properties
+spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/test/resources/application.properties b/spring-boot-modules/spring-boot-testing/src/test/resources/application.properties
new file mode 100644
index 0000000000..1810c7b1eb
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/resources/application.properties
@@ -0,0 +1,8 @@
+#embedded redis
+spring.redis.host= localhost
+spring.redis.port= 6370
+# security
+spring.security.user.name=john
+spring.security.user.password=123
+
+spring.main.allow-bean-definition-overriding=true
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/test/resources/application.yml b/spring-boot-modules/spring-boot-testing/src/test/resources/application.yml
new file mode 100644
index 0000000000..056b5baffc
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/resources/application.yml
@@ -0,0 +1,19 @@
+spring:
+ config:
+ activate:
+ on-profile: test
+server:
+ address:
+ ip: 192.168.0.4
+ resources_path:
+ imgs: /etc/test/imgs
+---
+spring:
+ config:
+ activate:
+ on-profile: dev
+server:
+ address:
+ ip: 192.168.0.5
+ resources_path:
+ imgs: /etc/dev/imgs
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/test/resources/logback-test.xml b/spring-boot-modules/spring-boot-testing/src/test/resources/logback-test.xml
new file mode 100644
index 0000000000..9553dcad41
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/resources/logback-test.xml
@@ -0,0 +1,12 @@
+
+
+
+
+ %d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+
+
+
+
+
+
+
diff --git a/spring-boot-modules/spring-boot-testing/src/test/resources/property-validation-test.properties b/spring-boot-modules/spring-boot-testing/src/test/resources/property-validation-test.properties
new file mode 100644
index 0000000000..6b4c881dc0
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/resources/property-validation-test.properties
@@ -0,0 +1,4 @@
+validate.propertiesMap.first=prop1
+validate.propertiesMap.second=prop2
+
+validate.mail_config.address=user1@test
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/test/resources/server-config-test.properties b/spring-boot-modules/spring-boot-testing/src/test/resources/server-config-test.properties
new file mode 100644
index 0000000000..62b23ed1d6
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/resources/server-config-test.properties
@@ -0,0 +1,6 @@
+server.address.ip=192.168.0.1
+server.resources_path.imgs=/root/imgs
+
+# default config
+server.default.address.ip=192.168.0.2
+server.default.resources_path.imgs=/root/def/imgs
\ No newline at end of file
diff --git a/spring-boot-modules/spring-boot-testing/src/test/resources/spring-conversion-test.properties b/spring-boot-modules/spring-boot-testing/src/test/resources/spring-conversion-test.properties
new file mode 100644
index 0000000000..87444cee10
--- /dev/null
+++ b/spring-boot-modules/spring-boot-testing/src/test/resources/spring-conversion-test.properties
@@ -0,0 +1,10 @@
+# bandwidth
+server.upload_speed=500MB
+server.download_speed=10
+
+# backup date
+server.backup_day=1d
+server.backup_hour=8
+
+# custom converter
+server.credentials=user,123
\ No newline at end of file