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/*
* Copyright (C) 2016 The Guava Authors
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.common.util.concurrent;
import static com.google.common.truth.Truth.assertThat;
import static com.google.common.util.concurrent.Futures.getDone;
import static com.google.common.util.concurrent.Futures.immediateCancelledFuture;
import static com.google.common.util.concurrent.Futures.immediateFailedFuture;
import static com.google.common.util.concurrent.Futures.immediateFuture;
import com.google.common.annotations.GwtCompatible;
import java.util.concurrent.CancellationException;
import java.util.concurrent.ExecutionException;
import junit.framework.TestCase;
/** Unit tests for {@link Futures#getDone}. */
@GwtCompatible
public class FuturesGetDoneTest extends TestCase {
public void testSuccessful() throws ExecutionException {
assertThat(getDone(immediateFuture("a"))).isEqualTo("a");
}
public void testSuccessfulNull() throws ExecutionException {
assertThat(getDone(immediateFuture((String) null))).isEqualTo(null);
}
public void testFailed() {
Exception failureCause = new Exception();
try {
getDone(immediateFailedFuture(failureCause));
fail();
} catch (ExecutionException expected) {
assertThat(expected).hasCauseThat().isEqualTo(failureCause);
}
}
public void testCancelled() throws ExecutionException {
try {
getDone(immediateCancelledFuture());
fail();
} catch (CancellationException expected) {
}
}
public void testPending() throws ExecutionException {
try {
getDone(SettableFuture.create());
fail();
} catch (IllegalStateException expected) {
}
}
}
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