From 926f273a2d94ff36005f9ba82af6c9c64b9e94eb Mon Sep 17 00:00:00 2001 From: Daniel Strmecki Date: Sat, 2 Jan 2021 12:08:15 +0100 Subject: [PATCH] Feature/bael 4749 java 11 features (#10308) * BAEL-4749: Added examples for Java 11 * BAEL-4749: Refactor test examples * BAEL-4749: Refactor test examples 2 * BAEL-4749: Fix PR comments * BAEL-4749: Update nestmates examples * BAEL-4749: Use method reference in Predicate.not example * BAEL-4749: Use String::isBlank in Predicate.not example * BAEL-4749: Two space indents when continuing a line * BAEL-4749: Two space indents when continuing a line (2) --- core-java-modules/core-java-11-2/pom.xml | 25 ++++++++ .../java/com/baeldung/features/MainClass.java | 17 ++++++ .../features/HttpClientIntegrationTest.java | 54 ++++++++++++++++ .../features/JavaElevenFeaturesUnitTest.java | 61 +++++++++++++++++++ .../features/NestedClassesUnitTest.java | 37 +++++++++++ 5 files changed, 194 insertions(+) create mode 100644 core-java-modules/core-java-11-2/src/main/java/com/baeldung/features/MainClass.java create mode 100644 core-java-modules/core-java-11-2/src/test/java/com/baeldung/features/HttpClientIntegrationTest.java create mode 100644 core-java-modules/core-java-11-2/src/test/java/com/baeldung/features/JavaElevenFeaturesUnitTest.java create mode 100644 core-java-modules/core-java-11-2/src/test/java/com/baeldung/features/NestedClassesUnitTest.java diff --git a/core-java-modules/core-java-11-2/pom.xml b/core-java-modules/core-java-11-2/pom.xml index e2b129ae00..b92963a5c8 100644 --- a/core-java-modules/core-java-11-2/pom.xml +++ b/core-java-modules/core-java-11-2/pom.xml @@ -28,6 +28,29 @@ ${assertj.version} test + + org.mock-server + mockserver-junit-jupiter + ${mockserver.version} + + + org.junit.jupiter + junit-jupiter-engine + ${junit.jupiter.version} + test + + + org.junit.jupiter + junit-jupiter-params + ${junit.jupiter.version} + test + + + org.junit.jupiter + junit-jupiter-api + ${junit.jupiter.version} + test + @@ -48,7 +71,9 @@ 11 11 29.0-jre + 5.7.0 3.17.2 + 5.11.1 diff --git a/core-java-modules/core-java-11-2/src/main/java/com/baeldung/features/MainClass.java b/core-java-modules/core-java-11-2/src/main/java/com/baeldung/features/MainClass.java new file mode 100644 index 0000000000..b00c56fcd7 --- /dev/null +++ b/core-java-modules/core-java-11-2/src/main/java/com/baeldung/features/MainClass.java @@ -0,0 +1,17 @@ +package com.baeldung.features; + +public class MainClass { + + private static boolean mainPrivateMethod() { + return true; + } + + public static class NestedClass { + + boolean nestedPublicMethod() { + return mainPrivateMethod(); + } + + } + +} diff --git a/core-java-modules/core-java-11-2/src/test/java/com/baeldung/features/HttpClientIntegrationTest.java b/core-java-modules/core-java-11-2/src/test/java/com/baeldung/features/HttpClientIntegrationTest.java new file mode 100644 index 0000000000..1d49f5dbd1 --- /dev/null +++ b/core-java-modules/core-java-11-2/src/test/java/com/baeldung/features/HttpClientIntegrationTest.java @@ -0,0 +1,54 @@ +package com.baeldung.features; + +import org.junit.jupiter.api.AfterAll; +import org.junit.jupiter.api.BeforeAll; +import org.junit.jupiter.api.Test; +import org.mockserver.integration.ClientAndServer; +import org.mockserver.model.HttpStatusCode; +import org.mockserver.socket.PortFactory; + +import java.io.IOException; +import java.net.URI; +import java.net.http.HttpClient; +import java.net.http.HttpRequest; +import java.net.http.HttpResponse; +import java.time.Duration; + +import static org.assertj.core.api.Assertions.assertThat; +import static org.mockserver.integration.ClientAndServer.startClientAndServer; + +class HttpClientIntegrationTest { + + private static ClientAndServer mockServer; + private static int port; + + @BeforeAll + static void startServer() { + port = PortFactory.findFreePort(); + mockServer = startClientAndServer(port); + mockServer.when(new org.mockserver.model.HttpRequest().withMethod("GET")) + .respond(new org.mockserver.model.HttpResponse() + .withStatusCode(HttpStatusCode.OK_200.code()) + .withBody("Hello from the server!")); + } + + @AfterAll + static void stopServer() { + mockServer.stop(); + } + + @Test + void givenSampleHttpRequest_whenRequestIsSent_thenServerResponseIsReceived() throws IOException, InterruptedException { + HttpClient httpClient = HttpClient.newBuilder() + .version(HttpClient.Version.HTTP_2) + .connectTimeout(Duration.ofSeconds(20)) + .build(); + HttpRequest httpRequest = HttpRequest.newBuilder() + .GET() + .uri(URI.create("http://localhost:" + port)) + .build(); + HttpResponse httpResponse = httpClient.send(httpRequest, HttpResponse.BodyHandlers.ofString()); + assertThat(httpResponse.body()).isEqualTo("Hello from the server!"); + } + +} diff --git a/core-java-modules/core-java-11-2/src/test/java/com/baeldung/features/JavaElevenFeaturesUnitTest.java b/core-java-modules/core-java-11-2/src/test/java/com/baeldung/features/JavaElevenFeaturesUnitTest.java new file mode 100644 index 0000000000..61ce9c7c13 --- /dev/null +++ b/core-java-modules/core-java-11-2/src/test/java/com/baeldung/features/JavaElevenFeaturesUnitTest.java @@ -0,0 +1,61 @@ +package com.baeldung.features; + +import org.junit.jupiter.api.Test; +import org.junit.jupiter.api.io.TempDir; + +import javax.annotation.Nonnull; +import java.io.IOException; +import java.nio.file.Files; +import java.nio.file.Path; +import java.util.Arrays; +import java.util.List; +import java.util.function.Predicate; +import java.util.stream.Collectors; + +import static org.assertj.core.api.Assertions.assertThat; + +class JavaElevenFeaturesUnitTest { + + @Test + void givenMultilineString_whenExtractingNonBlankStrippedLines_thenLinesAreReturned() { + String multilineString = "Baeldung helps \n \n developers \n explore Java."; + List lines = multilineString.lines() + .filter(line -> !line.isBlank()) + .map(String::strip) + .collect(Collectors.toList()); + assertThat(lines).containsExactly("Baeldung helps", "developers", "explore Java."); + } + + @Test + void givenTemporaryFile_whenReadingStringContent_thenContentIsReturned(@TempDir Path tempDir) throws IOException { + Path filePath = Files.writeString(Files.createTempFile(tempDir, "demo", ".txt"), "Sample text"); + String fileContent = Files.readString(filePath); + assertThat(fileContent).isEqualTo("Sample text"); + } + + @Test + void givenSampleList_whenConvertingToArray_thenItemsRemainUnchanged() { + List sampleList = Arrays.asList("Java", "Kotlin"); + String[] sampleArray = sampleList.toArray(String[]::new); + assertThat(sampleArray).containsExactly("Java", "Kotlin"); + } + + @Test + void givenSampleList_whenConvertingToUppercaseString_thenUppercaseIsReturned() { + List sampleList = Arrays.asList("Java", "Kotlin"); + String resultString = sampleList.stream() + .map((@Nonnull var x) -> x.toUpperCase()) + .collect(Collectors.joining(", ")); + assertThat(resultString).isEqualTo("JAVA, KOTLIN"); + } + + @Test + void givenSampleList_whenExtractingNonBlankValues_thenOnlyNonBlanksAreReturned() { + List sampleList = Arrays.asList("Java", "\n \n", "Kotlin", " "); + List withoutBlanks = sampleList.stream() + .filter(Predicate.not(String::isBlank)) + .collect(Collectors.toList()); + assertThat(withoutBlanks).containsExactly("Java", "Kotlin"); + } + +} diff --git a/core-java-modules/core-java-11-2/src/test/java/com/baeldung/features/NestedClassesUnitTest.java b/core-java-modules/core-java-11-2/src/test/java/com/baeldung/features/NestedClassesUnitTest.java new file mode 100644 index 0000000000..902ad9c6f8 --- /dev/null +++ b/core-java-modules/core-java-11-2/src/test/java/com/baeldung/features/NestedClassesUnitTest.java @@ -0,0 +1,37 @@ +package com.baeldung.features; + +import org.junit.jupiter.api.Test; + +import java.util.Arrays; +import java.util.Set; +import java.util.stream.Collectors; + +import static org.assertj.core.api.Assertions.assertThat; + +class NestedClassesUnitTest { + + @Test + public void giveNestedClass_whenCallingMainClassPrivateMethod_thenNoExceptionIsThrown() { + MainClass.NestedClass nestedInstance = new MainClass.NestedClass(); + assertThat(nestedInstance.nestedPublicMethod()).isTrue(); + } + + @Test + public void giveNestedClass_whenCheckingNestmate_thenNestedClassIsReturned() { + assertThat(MainClass.class.isNestmateOf(MainClass.NestedClass.class)).isTrue(); + } + + @Test + public void giveNestedClass_whenCheckingNestHost_thenMainClassIsReturned() { + assertThat(MainClass.NestedClass.class.getNestHost()).isEqualTo(MainClass.class); + } + + @Test + public void giveNestedClass_whenCheckingNestMembers_thenNestMembersAreReturned() { + Set nestedMembers = Arrays.stream(MainClass.NestedClass.class.getNestMembers()) + .map(Class::getName) + .collect(Collectors.toSet()); + assertThat(nestedMembers).contains(MainClass.class.getName(), MainClass.NestedClass.class.getName()); + } + +}