162 lines
4.8 KiB
Java
162 lines
4.8 KiB
Java
/*
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* Copyright (C) 2011 The Guava Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://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,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.common.cache;
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import static com.google.common.truth.Truth.assertThat;
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import com.google.common.util.concurrent.ExecutionError;
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import com.google.common.util.concurrent.UncheckedExecutionException;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.atomic.AtomicReference;
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import junit.framework.TestCase;
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/**
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* Unit test for {@link AbstractLoadingCache}.
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*
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* @author Charles Fry
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*/
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public class AbstractLoadingCacheTest extends TestCase {
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public void testGetUnchecked_checked() {
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final Exception cause = new Exception();
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final AtomicReference<Object> valueRef = new AtomicReference<>();
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LoadingCache<Object, Object> cache =
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new AbstractLoadingCache<Object, Object>() {
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@Override
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public Object get(Object key) throws ExecutionException {
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Object v = valueRef.get();
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if (v == null) {
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throw new ExecutionException(cause);
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}
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return v;
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}
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@Override
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public Object getIfPresent(Object key) {
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return valueRef.get();
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}
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};
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try {
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cache.getUnchecked(new Object());
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fail();
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} catch (UncheckedExecutionException expected) {
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assertThat(expected).hasCauseThat().isEqualTo(cause);
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}
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Object newValue = new Object();
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valueRef.set(newValue);
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assertSame(newValue, cache.getUnchecked(new Object()));
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}
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public void testGetUnchecked_unchecked() {
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final RuntimeException cause = new RuntimeException();
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final AtomicReference<Object> valueRef = new AtomicReference<>();
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LoadingCache<Object, Object> cache =
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new AbstractLoadingCache<Object, Object>() {
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@Override
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public Object get(Object key) throws ExecutionException {
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Object v = valueRef.get();
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if (v == null) {
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throw new ExecutionException(cause);
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}
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return v;
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}
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@Override
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public Object getIfPresent(Object key) {
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return valueRef.get();
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}
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};
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try {
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cache.getUnchecked(new Object());
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fail();
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} catch (UncheckedExecutionException expected) {
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assertThat(expected).hasCauseThat().isEqualTo(cause);
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}
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Object newValue = new Object();
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valueRef.set(newValue);
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assertSame(newValue, cache.getUnchecked(new Object()));
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}
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public void testGetUnchecked_error() {
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final Error cause = new Error();
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final AtomicReference<Object> valueRef = new AtomicReference<>();
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LoadingCache<Object, Object> cache =
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new AbstractLoadingCache<Object, Object>() {
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@Override
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public Object get(Object key) throws ExecutionException {
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Object v = valueRef.get();
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if (v == null) {
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throw new ExecutionError(cause);
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}
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return v;
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}
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@Override
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public Object getIfPresent(Object key) {
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return valueRef.get();
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}
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};
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try {
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cache.getUnchecked(new Object());
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fail();
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} catch (ExecutionError expected) {
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assertThat(expected).hasCauseThat().isEqualTo(cause);
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}
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Object newValue = new Object();
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valueRef.set(newValue);
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assertSame(newValue, cache.getUnchecked(new Object()));
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}
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public void testGetUnchecked_otherThrowable() {
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final Throwable cause = new Throwable();
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final AtomicReference<Object> valueRef = new AtomicReference<>();
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LoadingCache<Object, Object> cache =
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new AbstractLoadingCache<Object, Object>() {
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@Override
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public Object get(Object key) throws ExecutionException {
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Object v = valueRef.get();
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if (v == null) {
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throw new ExecutionException(cause);
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}
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return v;
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}
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@Override
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public Object getIfPresent(Object key) {
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return valueRef.get();
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}
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};
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try {
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cache.getUnchecked(new Object());
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fail();
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} catch (UncheckedExecutionException expected) {
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assertThat(expected).hasCauseThat().isEqualTo(cause);
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}
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Object newValue = new Object();
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valueRef.set(newValue);
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assertSame(newValue, cache.getUnchecked(new Object()));
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}
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}
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