org.assertj.core.api

Class AbstractCompletableFutureAssert<SELF extends AbstractCompletableFutureAssert<SELF,RESULT>,RESULT>

java.lang.Object

org.assertj.core.api.AbstractAssert<SELF,CompletableFuture<RESULT>>

org.assertj.core.api.AbstractCompletableFutureAssert<SELF,RESULT>

Type Parameters:

RESULT - type of the value contained in the CompletableFuture.

All Implemented Interfaces:

Assert<SELF,CompletableFuture<RESULT>>, Descriptable<SELF>, ExtensionPoints<SELF,CompletableFuture<RESULT>>

Direct Known Subclasses:

CompletableFutureAssert

public abstract class AbstractCompletableFutureAssert<SELF extends AbstractCompletableFutureAssert<SELF,RESULT>,RESULT>
extends AbstractAssert<SELF,CompletableFuture<RESULT>>

Assertions for CompletableFuture.

Field Summary

Fields inherited from class org.assertj.core.api.AbstractAssert

actual, info, myself, throwUnsupportedExceptionOnEquals

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractCompletableFutureAssert(CompletableFuture<RESULT> actual, Class<?> selfType)

Method Summary

Modifier and Type	Method and Description
SELF	hasFailed() Verifies that the CompletableFuture has completed exceptionally but has not been cancelled, this assertion is equivalent to:
AbstractThrowableAssert<?,? extends Throwable>	hasFailedWithThrowableThat() Verifies that the CompletableFuture has completed exceptionally and returns a Throwable assertion object allowing to check the Throwable that has caused the future to fail.
SELF	hasNotFailed() Verifies that the CompletableFuture has not failed i.e: incomplete, completed or cancelled. This is different from isNotCompletedExceptionally() as a cancelled future has not failed but is completed exceptionally.
SELF	isCancelled() Verifies that the CompletableFuture is cancelled.
SELF	isCompleted() Verifies that the CompletableFuture is completed normally (i.e.done but not completed exceptionally).
SELF	isCompletedExceptionally() Verifies that the CompletableFuture is completed exceptionally.
SELF	isCompletedWithValue(RESULT expected) Verifies that the CompletableFuture is completed normally with the expected result.
SELF	isCompletedWithValueMatching(Predicate<? super RESULT> predicate) Verifies that the CompletableFuture is completed normally with a result matching the predicate.
SELF	isCompletedWithValueMatching(Predicate<? super RESULT> predicate, String description) Verifies that the CompletableFuture is completed normally with a result matching the predicate, the String parameter is used in the error message.
SELF	isDone() Verifies that the CompletableFuture is done i.e.
SELF	isNotCancelled() Verifies that the CompletableFuture is not cancelled.
SELF	isNotCompleted() Verifies that the CompletableFuture is not completed normally (i.e.
SELF	isNotCompletedExceptionally() Verifies that the CompletableFuture is not completed exceptionally.
SELF	isNotDone() Verifies that the CompletableFuture is not done.

Methods inherited from class org.assertj.core.api.AbstractAssert

as, as, asList, asString, describedAs, describedAs, descriptionText, doesNotHave, doesNotHaveSameClassAs, equals, failWithMessage, getWritableAssertionInfo, has, hashCode, hasSameClassAs, hasSameHashCodeAs, hasToString, inBinary, inHexadecimal, is, isEqualTo, isExactlyInstanceOf, isIn, isIn, isInstanceOf, isInstanceOfAny, isInstanceOfSatisfying, isNot, isNotEqualTo, isNotExactlyInstanceOf, isNotIn, isNotIn, isNotInstanceOf, isNotInstanceOfAny, isNotNull, isNotOfAnyClassIn, isNotSameAs, isNull, isOfAnyClassIn, isSameAs, matches, matches, overridingErrorMessage, satisfies, setCustomRepresentation, throwAssertionError, usingComparator, usingDefaultComparator, withFailMessage, withRepresentation, withThreadDumpOnError

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractCompletableFutureAssert

protected AbstractCompletableFutureAssert(CompletableFuture<RESULT> actual,
                                          Class<?> selfType)

Method Detail

isDone

public SELF isDone()

Verifies that the CompletableFuture is done i.e. completed normally, exceptionally, or via cancellation.

Assertion will pass :

 assertThat(CompletableFuture.completedFuture("something")).isDone();

Assertion will fail :

 assertThat(new CompletableFuture()).isDone();

Returns:

this assertion object.

See Also:

CompletableFuture.isDone()

isNotDone

public SELF isNotDone()

Verifies that the CompletableFuture is not done.

Assertion will pass :

 assertThat(new CompletableFuture()).isNotDone();

Assertion will fail :

 assertThat(CompletableFuture.completedFuture("something")).isNotDone();

Returns:

this assertion object.

See Also:

CompletableFuture.isDone()

isCompletedExceptionally

public SELF isCompletedExceptionally()

Verifies that the CompletableFuture is completed exceptionally. Possible causes include cancellation, explicit invocation of completeExceptionally, and abrupt termination of a CompletionStage action.

If you only want to check that actual future is completed exceptionally but not cancelled, use hasFailed() or hasFailedWithThrowableThat().

Assertion will pass :

 CompletableFuture future = new CompletableFuture();
 future.completeExceptionally(new RuntimeException());
 assertThat(future).isCompletedExceptionally();

Assertion will fail :

 assertThat(CompletableFuture.completedFuture("something")).isCompletedExceptionally();

Returns:

this assertion object.

See Also:

CompletableFuture.isCompletedExceptionally()

isNotCompletedExceptionally

public SELF isNotCompletedExceptionally()

Verifies that the CompletableFuture is not completed exceptionally.

Assertion will pass :

 assertThat(CompletableFuture.completedFuture("something")).isNotCompletedExceptionally();

Assertion will fail :

 CompletableFuture future = new CompletableFuture();
 future.completeExceptionally(new RuntimeException());
 assertThat(future).isNotCompletedExceptionally();

Returns:

this assertion object.

See Also:

CompletableFuture.isCompletedExceptionally()

isCancelled

public SELF isCancelled()

Verifies that the CompletableFuture is cancelled.

Assertion will pass :

 CompletableFuture future = new CompletableFuture();
 future.cancel(true);
 assertThat(future).isCancelled();

Assertion will fail :

 assertThat(new CompletableFuture()).isCancelled();

Returns:

this assertion object.

See Also:

CompletableFuture.isCancelled()

isNotCancelled

public SELF isNotCancelled()

Verifies that the CompletableFuture is not cancelled.

Assertion will pass :

 assertThat(new CompletableFuture()).isNotCancelled();

Assertion will fail :

 CompletableFuture future = new CompletableFuture();
 future.cancel(true);
 assertThat(future).isNotCancelled();

Returns:

this assertion object.

See Also:

CompletableFuture.isCancelled()

isCompleted

public SELF isCompleted()

Verifies that the CompletableFuture is completed normally (i.e.done but not completed exceptionally).

Assertion will pass :

 assertThat(CompletableFuture.completedFuture("something")).isCompleted();

Assertion will fail :

 assertThat(new CompletableFuture()).isCompleted();

Returns:

this assertion object.

isNotCompleted

public SELF isNotCompleted()

Verifies that the CompletableFuture is not completed normally (i.e. incomplete, failed or cancelled).

Assertion will pass :

 assertThat(new CompletableFuture()).isNotCompleted();

Assertion will fail :

 assertThat(CompletableFuture.completedFuture("something")).isNotCompleted();

Returns:

this assertion object.

isCompletedWithValue

public SELF isCompletedWithValue(RESULT expected)

Verifies that the CompletableFuture is completed normally with the expected result.

Assertion will pass :

 assertThat(CompletableFuture.completedFuture("something"))
           .isCompletedWithValue("something");

Assertion will fail :

 assertThat(CompletableFuture.completedFuture("something"))
           .isCompletedWithValue("something else");

Parameters:

expected - the expected result value of the CompletableFuture.

Returns:

this assertion object.

isCompletedWithValueMatching

public SELF isCompletedWithValueMatching(Predicate<? super RESULT> predicate)

Verifies that the CompletableFuture is completed normally with a result matching the predicate.

Assertion will pass :

 assertThat(CompletableFuture.completedFuture("something"))
           .isCompletedWithValueMatching(result -> result.equals("something"));

Assertion will fail :

 assertThat(CompletableFuture.completedFuture("something"))
           .isCompletedWithValueMatching(result -> result.equals("something else"));

Parameters:

predicate - the Predicate to apply.

Returns:

this assertion object.

isCompletedWithValueMatching

public SELF isCompletedWithValueMatching(Predicate<? super RESULT> predicate,
                                         String description)

Verifies that the CompletableFuture is completed normally with a result matching the predicate, the String parameter is used in the error message.

Assertion will pass :

 assertThat(CompletableFuture.completedFuture("something"))
           .isCompletedWithValueMatching(result -> result != null, "expected not null");

Assertion will fail :

 assertThat(CompletableFuture.completedFuture("something"))
           .isCompletedWithValueMatching(result -> result == null, "expected null");

Error message is:

 Expecting:
   <"something">
 to match 'expected null' predicate.

Parameters:

predicate - the Predicate to apply on the resulting value.

description - the Predicate description.

Returns:

this assertion object.

hasFailed

public SELF hasFailed()

Verifies that the CompletableFuture has completed exceptionally but has not been cancelled, this assertion is equivalent to:

 assertThat(future).isCompletedExceptionally()
                   .isNotCancelled();

Assertion will pass :

 CompletableFuture future = new CompletableFuture();
 future.completeExceptionally(new RuntimeException());
 assertThat(future).hasFailed();

Assertion will fail :

 CompletableFuture future = new CompletableFuture();
 future.cancel(true);
 assertThat(future).hasFailed();

Returns:

this assertion object.

hasNotFailed

public SELF hasNotFailed()

Verifies that the CompletableFuture has not failed i.e: incomplete, completed or cancelled.
This is different from isNotCompletedExceptionally() as a cancelled future has not failed but is completed exceptionally.

Assertion will pass :

 CompletableFuture future = new CompletableFuture();
 future.cancel(true);
 assertThat(future).hasNotFailed();

Assertion will fail :

 CompletableFuture future = new CompletableFuture();
 future.completeExceptionally(new RuntimeException());
 assertThat(future).hasNotFailed();

Returns:

this assertion object.

hasFailedWithThrowableThat

public AbstractThrowableAssert<?,? extends Throwable> hasFailedWithThrowableThat()

Verifies that the CompletableFuture has completed exceptionally and returns a Throwable assertion object allowing to check the Throwable that has caused the future to fail.

Assertion will pass :

 CompletableFuture future = new CompletableFuture();
 future.completeExceptionally(new RuntimeException("boom!"));

 assertThat(future).hasFailedWithThrowableThat().isInstanceOf(RuntimeException.class);
                                                .hasMessage("boom!");
 

Assertion will fail :

 CompletableFuture future = new CompletableFuture();
 future.completeExceptionally(new RuntimeException());

 assertThat(future).hasFailedWithThrowableThat().isInstanceOf(IllegalArgumentException.class);
 

Returns:

an exception assertion object.