How to use isCompleted method of org.assertj.core.api.AbstractCompletableFutureAssert class

Best Assertj code snippet using org.assertj.core.api.AbstractCompletableFutureAssert.isCompleted

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...22 }23 public static <T> SafeFutureAssert<T> assertThatSafeFuture(final SafeFuture<T> actual) {24 return new SafeFutureAssert<>(actual);25 }26 public void isCompletedExceptionallyWith(final Throwable t) {27 isCompletedExceptionally();28 Assertions.assertThatThrownBy(actual::join)29 .isInstanceOf(CompletionException.class)30 .extracting(Throwable::getCause)31 .isSameAs(t);32 }33 public void isCompletedExceptionallyWith(final Class<? extends Throwable> exceptionType) {34 isCompletedExceptionally();35 Assertions.assertThatThrownBy(actual::join)36 .isInstanceOf(CompletionException.class)37 .extracting(Throwable::getCause)38 .isInstanceOf(exceptionType);39 }40 public void isCompletedWithEmptyOptional() {41 isCompleted();42 assertThat(actual.join()).isEqualTo(Optional.empty());43 }44 public void isCompletedWithNonEmptyOptional() {45 isCompleted();46 T result = actual.join();47 assertThat(result).isInstanceOf(Optional.class);48 assertThat((Optional<?>) result).isNotEmpty();49 }50 @SuppressWarnings("unchecked")51 public <X> void isCompletedWithOptionalContaining(final X value) {52 isCompleted();53 T result = actual.join();54 assertThat(result).isInstanceOf(Optional.class);55 assertThat(((Optional<T>) result)).contains((T) value);56 }57}...

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isCompleted

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1import java.util.concurrent.CompletableFuture;2import java.util.concurrent.ExecutionException;3import org.assertj.core.api.Assertions;4import org.junit.Test;5public class CompletableFutureTest {6 public void test() throws InterruptedException, ExecutionException {7 CompletableFuture<String> completableFuture = CompletableFuture.supplyAsync(() -> {8 return "Hello";9 });10 Assertions.assertThat(completableFuture).isCompleted();11 System.out.println(completableFuture.get());12 }13}

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isCompleted

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1import java.util.concurrent.CompletableFuture;2import java.util.concurrent.ExecutionException;3import org.assertj.core.api.Assertions;4public class AssertJCompletableFuture {5 public static void main(String[] args) throws InterruptedException, ExecutionException {6 CompletableFuture<String> future = CompletableFuture.completedFuture("result");7 Assertions.assertThat(future).isCompleted();8 }9}

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isCompleted

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1import java.util.concurrent.CompletableFuture;2import java.util.concurrent.ExecutionException;3import java.util.concurrent.TimeUnit;4import java.util.concurrent.TimeoutException;5import org.assertj.core.api.Assertions;6import org.junit.Test;7public class CompletableFutureTest {8 public void testCompletableFuture() throws InterruptedException, ExecutionException, TimeoutException {9 CompletableFuture<String> completableFuture = CompletableFuture.supplyAsync(() -> "Hello");10 Assertions.assertThat(completableFuture.isDone()).isFalse();11 Assertions.assertThat(completableFuture.isCompletedExceptionally()).isFalse();12 Assertions.assertThat(completableFuture.isCancelled()).isFalse();13 Assertions.assertThat(completableFuture.isCompletedExceptionally())

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isCompleted

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1import org.junit.Test;2import java.util.concurrent.CompletableFuture;3import static org.assertj.core.api.Assertions.assertThat;4public class CompletableFutureTest {5 public void testCompletableFuture() {6 CompletableFuture<String> completableFuture = CompletableFuture.completedFuture("Hello");7 assertThat(completableFuture).isCompleted();8 }9}10import org.junit.Test;11import java.util.concurrent.CompletableFuture;12import static org.assertj.core.api.Assertions.assertThat;13public class CompletableFutureTest {14 public void testCompletableFuture() {15 CompletableFuture<String> completableFuture = CompletableFuture.completedFuture("Hello");16 assertThat(completableFuture).isCompletedWithValue("Hello");17 }18}19import org.junit.Test;20import java.util.concurrent.CompletableFuture;21import static org.assertj.core.api

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isCompleted

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1import static org.assertj.core.api.Assertions.assertThat;2CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> "Hello World");3assertThat(future).isCompleted();4assertThat(future).isCompletedWithValue("Hello World");5assertThat(future).isCompletedWithValueMatching(s -> s.startsWith("Hello"));6CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> {7 throw new RuntimeException("Something went wrong");8});9assertThat(future).isCompletedExceptionally();10assertThat(future).isCompletedExceptionallyWith(Throwable.class);11assertThat(future).isCompletedExceptionallyWith(Throwable.class, "Something went wrong");12assertThat(future).isCompletedExceptionallyWith(Throwable.class, e -> e.getMessage().startsWith("Something went wrong"));13CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> "Hello World");14assertThat(future).isNotCompleted();15CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> "Hello World");16assertThat(future).isNotCompletedExceptionally();17CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> "Hello World");18assertThat(future).isNotCancelled();19CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> "Hello World");20future.cancel(true);21assertThat(future).isCancelled();22CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> "Hello World");23future.cancel(true);24assertThat(future).isCancelledWith(true);25assertThat(future).isCancelledWith(false);26CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> "Hello World");27assertThat(future).isDone();28CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> "Hello World");29assertThat(future).isNotDone();

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isCompleted

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1import org.assertj.core.api.AbstractCompletableFutureAssert;2public class CompletableFutureAssertTest {3 public static void main(String[] args) {4 AbstractCompletableFutureAssert<?, ?> assert1 = null;5 AbstractCompletableFutureAssert<?, ?> assert2 = null;6 assert1.isCompleted();7 assert2.isCompleted();8 }9}10I am using IntelliJ IDEA 2019.2.4 (Community Edition) and JDK 1.8.0_221. I am using maven to manage dependencies. I am using the following dependencies:

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isCompleted

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1import java.util.concurrent.CompletableFuture;2import org.junit.jupiter.api.Test;3import static org.assertj.core.api.Assertions.assertThat;4public class AssertJCompletableFutureTest {5 public void givenCompletableFuture_whenCompleted_thenCorrect() {6 CompletableFuture<String> completableFuture = CompletableFuture.completedFuture("foo");7 assertThat(completableFuture).isCompleted();8 }9}10 at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.newInstance(ClassBasedTestDescriptor.java:346)11 at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:270)12 at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$2(ClassBasedTestDescriptor.java:262)13 at java.base/​java.util.Optional.orElseGet(Optional.java:369)14 at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$3(ClassBasedTestDescriptor.java:261)15 at java.base/​java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)16 at java.base/​java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)17 at java.base/​java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)18 at java.base/​java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)19 at java.base/​java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)20 at java.base/​java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)21 at java.base/​java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)22 at java.base/​java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)23 at java.base/​java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)24 at java.base/​java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)25 at java.base/​java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)26 at java.base/​java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)27 at java.base/​java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)

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isCompleted

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1import org.assertj.core.api.Assertions.assertThat2import org.junit.jupiter.api.Test3import java.util.concurrent.CompletableFuture4class CompletableFutureTest {5 fun `should not block when checking if future is completed`() {6 val future = CompletableFuture.supplyAsync { 42 }7 assertThat(future).isCompleted8 }9}10 at org.assertj.core.api.AbstractCompletableFutureAssert.isCompleted(AbstractCompletableFutureAssert.java:79)11 at org.assertj.core.api.AbstractCompletableFutureAssert.isCompleted(AbstractCompletableFutureAssert.java:43)12 at org.example.CompletableFutureTest.should not block when checking if future is completed(CompletableFutureTest.kt:14)13import org.assertj.core.api.Assertions.assertThat14import org.junit.jupiter.api.Test15import java.util.concurrent.CompletableFuture16class CompletableFutureTest {17 fun `should not block when checking if future is completed`() {18 val future = CompletableFuture.supplyAsync { 42 }19 assertThat(future).isCompletedWithValue(42)20 }21}22 at org.assertj.core.api.AbstractCompletableFutureAssert.isCompletedWithValue(AbstractCompletableFutureAssert.java:91)23 at org.assertj.core.api.AbstractCompletableFutureAssert.isCompletedWithValue(AbstractCompletableFutureAssert.java:43)24 at org.example.CompletableFutureTest.should not block when checking if future is completed(CompletableFutureTest.kt:14)25import org.assertj.core.api.Assertions.assertThat26import org.junit.jupiter.api.Test27import java.util.concurrent.CompletableFuture28class CompletableFutureTest {29 fun `should not block when checking if future is completed`() {30 val future = CompletableFuture.supplyAsync { 42 }31 assertThat(future).isCompletedWithValueMatching { it == 42 }32 }33}

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