Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! Join TestMu Conference

How to use CompletableFutureAssert class of org.assertj.core.api package

Best Assertj code snippet using org.assertj.core.api.CompletableFutureAssert

Source:CompletableFutureAssertionsExamples.java

...25 * {@link CompletableFuture} assertions example.26 *27 * @author Joel Costigliola28 */29public class CompletableFutureAssertionsExamples extends AbstractAssertionsExamples {30  @Test31  public void completableFuture_assertions_examples() {32    CompletableFuture<String> completedFuture = completedFuture("something");33    assertThat(completedFuture).isCompleted()34                               .isCompletedWithValue("something")35                               .isCompletedWithValueMatching(result -> result.startsWith("some"))36                               .isCompletedWithValueMatching(result -> result.startsWith("some"), "error message")37                               .isDone();38    CompletableFuture<?> futureExplosion = new CompletableFuture<>();39    futureExplosion.completeExceptionally(new RuntimeException("boom !"));40    assertThat(futureExplosion).isCompletedExceptionally()41                               .isDone();42    assertThat(futureExplosion).isCompletedExceptionally()43                               .isNotCancelled()44                               .failsWithin(10, TimeUnit.MILLISECONDS)45                               .withThrowableOfType(ExecutionException.class)46                               .withCauseInstanceOf(RuntimeException.class)47                               .withMessageContaining("boom !");48    CompletableFuture<?> cancelledFuture = new CompletableFuture<>();49    cancelledFuture.cancel(true);50    assertThat(cancelledFuture).isCancelled()51                               .isDone()52                               .isCompletedExceptionally();53    CompletableFuture<String> future = completedFuture("ook!");54    // assertion expressed with TimeUnit55    assertThat(future).succeedsWithin(100, TimeUnit.MILLISECONDS)56                      .isEqualTo("ook!");57    // strongly typed assertion58    assertThat(future).succeedsWithin(100, TimeUnit.MILLISECONDS, as(STRING))59                      .startsWith("oo");60    // same assertions with Duration61    assertThat(future).succeedsWithin(Duration.ofMillis(100))62                      .isEqualTo("ook!");63    assertThat(future).succeedsWithin(Duration.ofMillis(100), as(STRING))64                      .startsWith("oo");65    // log some error messages to have a look at them66    try {67      assertThat(completedFuture).isCompletedWithValueMatching(result -> result == null, "expected null");68    } catch (AssertionError e) {69      logAssertionErrorMessage("CompletableFutureAssert.isCompletedWithValueMatching", e);70    }71    try {72      assertThat(completedFuture).isCompletedExceptionally()73                                 .isNotCancelled();74    } catch (AssertionError e) {75      logAssertionErrorMessage("CompletableFutureAssert.hasFailed", e);76    }77  }78  @Test79  public void completionStage_assertions_examples() {80    CompletionStage<String> actual = completedFuture("done");81    assertThat(actual).isDone()82                      .isNotCancelled()83                      .isNotCompletedExceptionally();84  }85}...

Source:CompletableFutureAssert.java

...17 * Assertions for {@link CompletableFuture}.18 *19 * @param <RESULT> type of the value contained in the {@link CompletableFuture}.20 */21public class CompletableFutureAssert<RESULT> extends AbstractCompletableFutureAssert<CompletableFutureAssert<RESULT>, RESULT> {22  protected CompletableFutureAssert(CompletableFuture<RESULT> actual) {23    super(actual, CompletableFutureAssert.class);24  }25  protected CompletableFutureAssert(CompletionStage<RESULT> actual) {26    super(actual == null ? null : actual.toCompletableFuture(), CompletableFutureAssert.class);27  }28}...

CompletableFutureAssert

Using AI Code Generation

1import org.assertj.core.api.CompletableFutureAssert;2import java.util.concurrent.CompletableFuture;3import java.util.concurrent.ExecutionException;4public class CompletableFutureAssertExample {5    public static void main(String[] args) throws ExecutionException, InterruptedException {6        CompletableFuture<String> cf = CompletableFuture.supplyAsync(() -> "Hello");7        CompletableFutureAssert<String> cfAssert = new CompletableFutureAssert<>(cf);8        cfAssert.isCompleted();9        cfAssert.isNotCancelled();10        cfAssert.isNotCompletedExceptionally();11        cfAssert.hasNotFailed();12        cfAssert.hasFailed();13        cfAssert.isCompletedWithValueMatching(s -> s.equals("Hello"));14        cfAssert.isCompletedWithValueMatching(s -> s.equals("Hello"), "Hello");15        cfAssert.isCompletedWithValueMatching(s -> s.equals("Hello"), "Hello", "World");16        cfAssert.isCompletedWithValueMatching(s -> s.equals("Hello"), "Hello", "World", "Java");17        cfAssert.isCompletedWithValueMatching(s -> s.equals("Hello"), "Hello", "World", "Java", "Scala");18        cfAssert.isCompletedWithValueMatching(s -> s.equals("Hello"), "Hello", "World", "Java", "Scala", "Kotlin");19        cfAssert.isCompletedWithValueMatching(s -> s.equals("Hello"), "Hello", "World", "Java", "Scala", "Kotlin", "C++");20        cfAssert.isCompletedWithValueMatching(s -> s.equals("Hello"), "Hello", "World", "Java", "Scala", "Kotlin", "C++", "C");21        cfAssert.isCompletedWithValueMatching(s -> s.equals("Hello"), "Hello", "World", "Java", "Scala", "Kotlin", "C++", "C", "C#");22        cfAssert.isCompletedWithValueMatching(s -> s.equals("Hello"), "Hello", "World", "Java", "Scala", "Kotlin", "C++", "C", "C#", "Python");23        cfAssert.isCompletedWithValueMatching(s -> s.equals("Hello"), "Hello", "World", "Java", "Scala", "Kotlin", "C++", "C", "C#", "Python", "Ruby");24    }25}

CompletableFutureAssert

Using AI Code Generation

1import java.util.concurrent.CompletableFuture;2import java.util.concurrent.ExecutionException;3import org.assertj.core.api.CompletableFutureAssert;4import org.assertj.core.api.CompletableFutureAssertBaseTest;5public class CompletableFutureAssertTest extends CompletableFutureAssertBaseTest {6	protected CompletableFutureAssert<String> invoke_api_method() {7		CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> "Hello");8		return assertThat(future);9	}10	protected void verify_internal_effects() {11		CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> "Hello");12		try {13			assertThat(future.get()).isEqualTo("Hello");14		} catch (InterruptedException | ExecutionException e) {15			e.printStackTrace();16		}17	}18}

CompletableFutureAssert

Using AI Code Generation

1import java.util.concurrent.CompletableFuture;2import java.util.concurrent.CompletionStage;3import java.util.concurrent.TimeUnit;4import java.util.concurrent.TimeoutException;5import java.util.function.Supplier;6import org.assertj.core.api.CompletableFutureAssert;7import org.assertj.core.api.CompletionStageAssert;8import org.assertj.core.api.ThrowableAssert.ThrowingCallable;9import org.assertj.core.api.ThrowableAssertAlternative;10import org.assertj.core.api.ThrowableAssertBaseTest;11import org.assertj.core.api.ThrowableAssertCaughtException;12import org.assertj.core.api.ThrowableAssertNoExpectedType;13import org.assertj.core.api.ThrowableAssertNoValue;14import org.assertj.core.util.introspection.IntrospectionError;15import org.junit.jupiter.api.Test;16import org.junit.jupiter.api.function.Executable;17import org.mockito.Mockito;18import org.opentest4j.AssertionFailedError;19import org.opentest4j.MultipleFailuresError;20import org.opentest4j.ValueWrapper;21import static org.assertj.core.api.Assertions.assertThat;22import static org.assertj.core.api.Assertions.assertThatCode;23import static org.assertj.core.api.Assertions.assertThatExceptionOfType;24import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;25import static org.assertj.core.api.Assertions.assertThatNoException;26import static org.assertj.core.api.Assertions.assertThatNullPointerException;27import static org.assertj.core.api.Assertions.assertThatThrownBy;28import static org.assertj.core.api.Assertions.assertThatThrownByCode;29import static org.assertj.core.api.Assertions.catchThrowable;30import static org.assertj.core.api.Assertions.catchThrowableOfType;31import static org.assertj.core.api.Assertions.catchThrowableType;32import static org.assertj.core.api.Assertions.fa

CompletableFutureAssert

Using AI Code Generation

1import org.assertj.core.api.CompletableFutureAssert;2import java.util.concurrent.CompletableFuture;3import java.util.concurrent.TimeUnit;4public class CompletableFutureAssertExample {5    public static void main(String[] args) throws InterruptedException {6        CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> "Hello World");7        CompletableFutureAssert.assertThat(future).isDone();8        System.out.println("CompletableFutureAssertExample");9    }10}

CompletableFutureAssert

Using AI Code Generation

1import org.assertj.core.api.CompletableFutureAssert;2import java.util.concurrent.CompletableFuture;3import java.util.concurrent.TimeUnit;4public class CompletableFutureAssertExample {5    public static void main(String[] args) throws InterruptedException {6        CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> "Hello World");7        CompletableFutureAssert.assertThat(future).isDone();8        System.out.println("CompletableFutureAssertExample");9    }10}

CompletableFutureAssert

Using AI Code Generation

1package com.automationrhapsody.junit5;2import static org.assertj.core.api.Assertions.assertThat;3import static org.junit.jupiter.api.Assertions.assertAll;4import java.util.concurrent.CompletableFuture;5import java.util.concurrent.ExecutionException;6import org.junit.jupiter.api.Test;7public class CompletableFutureAssertTest {8    public void whenUsingCompletableFutureAssert_thenCorrect() throws InterruptedException, ExecutionException {9        CompletableFuture<String> completableFuture = CompletableFuture.supplyAsync(() -> "Hello");10        assertAll(11                () -> assertThat(completableFuture).isCompletedWithValue("Hello"),12                () -> assertThat(completableFuture).isCompleted(),13                () -> assertThat(completableFuture).isNotCancelled(),14                () -> assertThat(completableFuture).isNotCompletedExceptionally(),15                () -> assertThat(completableFuture).isNotDone());16    }17}

CompletableFutureAssert

Using AI Code Generation

1package org.example;2import java.util.concurrent.CompletableFuture;3import org.assertj.core.api.CompletableFutureAssert;4public class App {5    public static void main(String[] args) {6        CompletableFuture<String> future = CompletableFuture.completedFuture("Hello");7        CompletableFutureAssert<String> assertion = new CompletableFutureAssert<>(future);8        assertion.isCompletedWithValue("Hello");9    }10}11ge or.assertj.core.api;12import java.util.concurrnt.Com

CompletableFutureAssert

Using AI Code Generation

1import.CompletableFutureAssert2Java 9 CompletableFuture APICompletableFuture;3import java.util.concurrent.TimeUnit;4import java.util.concurrent.TimeoutException;5import java.util.function.Supplier;6public class CompletableFutureAssertExample {7    public static void main(String[] args) throws TimeoutException, InterruptedException {8        Supplier<String> supplier = () -> {9            try {10                Thread.sleep(2000);11            } catch (InterruptedException e) {12                e.printStackTrace();13            }14            return "Hello";15        };16        CompletableFuture<String> future = CompletableFuture.supplyAsync(supplier);17        CompletableFutureAssert.assertThat(future).isCompletedWithin(3000, TimeUnit.MILLISECONDS);18    }19}

CompletableFutureAssert

Using AI Code Generation

1package org.assertj.core.api;2import java.util.concurrent.CompletableFuture;3import java.util.concurrent.CompletionStage;4public class CompletableFutureAssert<RESULT> extends AbstractCompletableFutureAssert<CompletableFutureAssert<RESULT>, RESULT> {5    public CompletableFutureAssert(CompletionStage<RESULT> actual) {6        super(actual, CompletableFutureAssert.class);7    }8}9package org.assertj.core.api;10import java.util.concurrent.CompletableFuture;11import java.util.concurrent.CompletionStage;12public class AbstractCompletableFutureAssert<SELF extends AbstractCompletableFutureAssert<SELF, RESULT>, RESULT> extends AbstractFutureAssert<SELF, CompletionStage<RESULT>, RESULT> {13    public AbstractCompletableFutureAssert(CompletionStage<RESULT> actual, Class<?> selfType) {14        super(actual, selfType);15    }16}17package org.assertj.core.api;18import java.util.concurrent.CompletableFuture;19import java.util.concurrent.CompletionStage;20public abstract class AbstractFutureAssert<SELF extends AbstractFutureAssert<SELF, ACTUAL, RESULT>, ACTUAL extends CompletionStage<RESULT>, RESULT> extends AbstractAssert<SELF, ACTUAL> {21    public AbstractFutureAssert(ACTUAL actual, Class<?> selfType) {22        super(actual, selfType);23    }24}25package org.assertj.core.api;26import java.util.concurrent.CompletableFuture;27import java.util.concurrent.CompletionStage;28public abstract class AbstractAssert<SELF extends AbstractAssert<SELF, ACTUAL>, ACTUAL> {29    public AbstractAssert(ACTUAL actual, Class<?> selfType) {30    }31}32package org.assertj.core.api;33import java.util.concurrent.CompletableFuture;34import java.util.concurrent.CompletionStage;35public abstract class AbstractObjectAssert<SELF extends AbstractObjectAssert<SELF, ACTUAL>, ACTUAL> extends AbstractAssert<SELF, ACTUAL> {36    public AbstractObjectAssert(ACTUAL actual, Class<?> selfType) {37        super(actual, selfType);38    }39}40package org.assertj.core.api;41import java.util.concurrent.Com

CompletableFutureAssert

Using AI Code Generation

1import org.assertj.core.api.CompletableFutureAssert;2import java.util.concurrent.CompletableFuture;3import java.util.concurrent.TimeUnit;4import java.util.concurrent.TimeoutException;5import java.util.function.Supplier;6public class CompletableFutureAssertExample {7    public static void main(String[] args) throws TimeoutException, InterruptedException {8        Supplier<String> supplier = () -> {9            try {10                Thread.sleep(2000);

CompletableFutureAssert

Using AI Code Generation

1package com.acko;2import static org.assertj.core.api.Assertions.*;3import java.util.concurrent.CompletableFuture;4import java.util.concurrent.ExecutionException;5public class CompletableFutureAssertExample {6	public static void main(String[] args) throws InterruptedException, ExecutionException {7		CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> "hello");8		assertThat(future).isCompletedWithValue("hello");9	}10}11Java CompletableFuture API - getNow() method12Java CompletableFuture API - get() method13Java CompletableFuture API - join() method14Java CompletableFuture API - complete() method15Java CompletableFuture API - completeExceptionally() method16Java CompletableFuture API - cancel() method17Java CompletableFuture API - isCancelled() method18Java CompletableFuture API - isCompletedExceptionally() method19Java CompletableFuture API - isDone() method20Java CompletableFuture API - obtrudeValue() method21Java CompletableFuture API - obtrudeException() method22Java CompletableFuture API - thenApply() method23Java CompletableFuture API - thenAccept() method24Java CompletableFuture API - thenRun() method25Java CompletableFuture API - thenCompose() method26Java CompletableFuture API - thenCombine() method27Java CompletableFuture API - thenAcceptBoth() method28Java CompletableFuture API - runAfterBoth() method29Java CompletableFuture API - applyToEither() method30Java CompletableFuture API - acceptEither() method31Java CompletableFuture API - runAfterEither() method32Java CompletableFuture API - thenAcceptAsync() method33Java CompletableFuture API - thenApplyAsync() method34Java CompletableFuture API - thenRunAsync() method35Java CompletableFuture API - thenAcceptAsync() method36Java CompletableFuture API - thenApplyAsync() method37Java CompletableFuture API - thenRunAsync() method38Java CompletableFuture API - thenComposeAsync() method39Java CompletableFuture API - runAfterBothAsync() method40Java CompletableFuture API - thenAcceptBothAsync() method41Java CompletableFuture API - thenCombineAsync() method42Java CompletableFuture API - acceptEitherAsync() method43Java CompletableFuture API - applyToEitherAsync() method44Java CompletableFuture API - runAfterEitherAsync() method45Java CompletableFuture API - allOf() method46Java CompletableFuture API - anyOf() method47Java CompletableFuture API - newIncompleteFuture() method48Java CompletableFuture API - completedFuture() method49Java CompletableFuture API - completedStage() method50Java CompletableFuture API - failedFuture() method51Java CompletableFuture API - failedStage() method52            } catch (InterruptedException e) {53                e.printStackTrace();54            }55            return "Hello";56        };57        CompletableFuture<String> future = CompletableFuture.supplyAsync(supplier);58        CompletableFutureAssert.assertThat(future).isCompletedWithin(3000, TimeUnit.MILLISECONDS);59    }60}

CompletableFutureAssert

Using AI Code Generation

1import org.assertj.core.api.*;2import org.assertj.core.api.CompletableFutureAssert;3import java.util.concurrent.CompletableFuture;4public class 1 {5  public static void main(String[] args) {6    CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> {7      return "Hello World";8    });9    CompletableFutureAssert<String> assertFuture = new CompletableFutureAssert<>(future);10    assertFuture.isCompleted();11  }12}13	at org.assertj.core.api.AbstractCompletableFutureAssert.isNotCompleted(AbstractCompletableFutureAssert.java:93)14	at org.assertj.core.api.CompletableFutureAssert.isNotCompleted(CompletableFutureAssert.java:61)15	at 1.main(1.java:16)16import org.assertj.core.api.*;17import org.assertj.core.api.CompletableFutureAssert;18import java.util.concurrent.CompletableFuture;19public class 2 {20  public static void main(String[] args) {21    CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> {22      return "Hello World";23    });24    CompletableFutureAssert<String> assertFuture = new CompletableFutureAssert<>(future);25    assertFuture.isCompletedExceptionally();26  }27}28	at org.assertj.core.api.AbstractCompletableFutureAssert.isNotCompletedExceptionally(AbstractCompletableFutureAssert.java:108)29	at org.assertj.core.api.CompletableFutureAssert.isNotCompletedExceptionally(CompletableFutureAssert.java:66)30	at 2.main(2.java:16)31import org.assertj.core.api.*;32import org.assertj.core.api.CompletableFutureAssert;33import java.util.concurrent.CompletableFuture;34public class 3 {35  public static void main(String[] args) {36    CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> {

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.