173 lines
5.0 KiB
Java
173 lines
5.0 KiB
Java
/*
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* Copyright 2016 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.util.concurrent;
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import org.junit.jupiter.api.BeforeEach;
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import org.junit.jupiter.api.Test;
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import static io.netty.util.concurrent.ImmediateEventExecutor.INSTANCE;
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import static org.assertj.core.api.Assertions.assertThat;
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import static org.junit.jupiter.api.Assertions.assertFalse;
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import static org.junit.jupiter.api.Assertions.assertThrows;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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import static org.junit.jupiter.api.Assertions.fail;
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public class PromiseCombinerTest {
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private Promise<Void> p1;
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private Future<Void> f1;
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private Promise<Void> p2;
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private Future<Void> f2;
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private Promise<Void> p3;
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private PromiseCombiner combiner;
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@BeforeEach
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public void setup() {
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p1 = INSTANCE.newPromise();
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p2 = INSTANCE.newPromise();
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p3 = INSTANCE.newPromise();
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f1 = p1.asFuture();
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f2 = p2.asFuture();
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combiner = new PromiseCombiner(INSTANCE);
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}
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@Test
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public void testNullArgument() {
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try {
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combiner.finish(null);
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fail();
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} catch (NullPointerException expected) {
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// expected
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}
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combiner.finish(p1);
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assertTrue(p1.isSuccess());
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assertThat(p1.getNow()).isNull();
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}
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@Test
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public void testNullAggregatePromise() {
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combiner.finish(p1);
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assertTrue(p1.isSuccess());
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assertThat(p1.getNow()).isNull();
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}
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@Test
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public void testAddNullPromise() {
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assertThrows(NullPointerException.class, () -> combiner.add(null));
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}
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@Test
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public void testAddAllNullPromise() {
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assertThrows(NullPointerException.class, () -> combiner.addAll(null));
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}
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@Test
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public void testAddAfterFinish() {
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combiner.finish(p1);
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assertThrows(IllegalStateException.class, () -> combiner.add(f2));
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}
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@Test
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public void testAddAllAfterFinish() {
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combiner.finish(p1);
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assertThrows(IllegalStateException.class, () -> combiner.addAll(f2));
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}
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@Test
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public void testFinishCalledTwiceThrows() {
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combiner.finish(p1);
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assertThrows(IllegalStateException.class, () -> combiner.finish(p1));
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}
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@Test
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public void testAddAllSuccess() throws Exception {
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p1.setSuccess(null);
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combiner.addAll(f1, f2);
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combiner.finish(p3);
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assertFalse(p3.isDone());
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p2.setSuccess(null);
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assertTrue(p3.isDone());
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assertTrue(p3.isSuccess());
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}
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@Test
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public void testAddSuccess() throws Exception {
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p1.setSuccess(null);
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p2.setSuccess(null);
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combiner.add(f1);
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combiner.add(f2);
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assertFalse(p3.isDone());
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combiner.finish(p3);
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assertTrue(p3.isSuccess());
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}
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@Test
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public void testAddAllFail() throws Exception {
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RuntimeException e1 = new RuntimeException("fake exception 1");
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RuntimeException e2 = new RuntimeException("fake exception 2");
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combiner.addAll(f1, f2);
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combiner.finish(p3);
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p1.setFailure(e1);
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assertFalse(p3.isDone());
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p2.setFailure(e2);
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assertTrue(p3.isFailed());
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assertThat(p3.cause()).isSameAs(e1);
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}
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@Test
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public void testAddFail() throws Exception {
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RuntimeException e1 = new RuntimeException("fake exception 1");
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RuntimeException e2 = new RuntimeException("fake exception 2");
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combiner.add(f1);
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p1.setFailure(e1);
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combiner.add(f2);
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p2.setFailure(e2);
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assertFalse(p3.isDone());
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combiner.finish(p3);
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assertTrue(p3.isFailed());
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assertThat(p3.cause()).isSameAs(e1);
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}
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@Test
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public void testEventExecutor() {
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EventExecutor executor = new SingleThreadEventExecutor();
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combiner = new PromiseCombiner(executor);
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Future<?> future = executor.newPromise().asFuture();
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try {
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combiner.add(future);
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fail();
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} catch (IllegalStateException expected) {
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// expected
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}
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try {
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combiner.addAll(future);
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fail();
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} catch (IllegalStateException expected) {
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// expected
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}
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Promise<Void> promise = executor.newPromise();
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try {
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combiner.finish(promise);
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fail();
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} catch (IllegalStateException expected) {
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// expected
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}
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}
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}
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