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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.handler;
import org.junit.jupiter.api.Test;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertSame;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assertions.fail;
/**
* @author Simon Thoresen Hult
*/
public class FutureCompletionTestCase {
@Test
void requireThatCancelIsUnsupported() {
FutureCompletion future = new FutureCompletion();
assertFalse(future.isCancelled());
try {
future.cancel(true);
fail();
} catch (UnsupportedOperationException e) {
}
assertFalse(future.isCancelled());
try {
future.cancel(false);
fail();
} catch (UnsupportedOperationException e) {
}
assertFalse(future.isCancelled());
}
@Test
void requireThatCompletedReturnsTrue() throws Exception {
FutureCompletion future = new FutureCompletion();
try {
future.get(0, TimeUnit.MILLISECONDS);
fail();
} catch (TimeoutException e) {
}
future.completed();
assertTrue(future.get(0, TimeUnit.MILLISECONDS));
assertTrue(future.get());
}
@Test
void requireThatCompletionIsDoneWhenCompleted() {
FutureCompletion future = new FutureCompletion();
assertFalse(future.isDone());
future.completed();
assertTrue(future.isDone());
}
@Test
void requireThatCompletionIsDoneWhenFailed() {
FutureCompletion future = new FutureCompletion();
assertFalse(future.isDone());
future.failed(new Throwable());
assertTrue(future.isDone());
}
@Test
void requireThatFailedCauseIsRethrown() throws Exception {
FutureCompletion future = new FutureCompletion();
Throwable t = new Throwable();
future.failed(t);
try {
future.get(0, TimeUnit.SECONDS);
fail();
} catch (ExecutionException e) {
assertSame(t, e.getCause());
}
try {
future.get();
fail();
} catch (ExecutionException e) {
assertSame(t, e.getCause());
}
}
@Test
void requireThatCompletionCanBeListenedTo() throws InterruptedException {
FutureCompletion completion = new FutureCompletion();
RunnableLatch listener = new RunnableLatch();
completion.addListener(listener, Runnable::run);
assertFalse(listener.await(100, TimeUnit.MILLISECONDS));
completion.completed();
assertTrue(listener.await(600, TimeUnit.SECONDS));
completion = new FutureCompletion();
listener = new RunnableLatch();
completion.addListener(listener, Runnable::run);
assertFalse(listener.await(100, TimeUnit.MILLISECONDS));
completion.failed(new Throwable());
assertTrue(listener.await(600, TimeUnit.SECONDS));
}
}
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