android/guava-tests/test/com/google/common/cache/ForwardingLoadingCacheTest.java - master - githubmirror/guava

android/guava-tests/test/com/google/common/cache/ForwardingLoadingCacheTest.java
129 строк4 KB
cpovirk
Avoid testing identity equality on `Boolean` instances.
11 авг 2026, 01:28
11 авг 2026, 01:28f232c38
/*
 * Copyright (C) 2009 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.cache;

import static com.google.common.truth.Truth.assertThat;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.errorprone.annotations.Keep;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ExecutionException;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit test for {@link ForwardingLoadingCache}.
 *
 * @author Charles Fry
 */
@GwtIncompatible
@J2ktIncompatible
@NullUnmarked
public class ForwardingLoadingCacheTest extends TestCase {
  private LoadingCache<String, Boolean> forward;
  private LoadingCache<String, Boolean> mock;

  @SuppressWarnings({"unchecked", "DoNotMock"}) // mock
  @Override
  protected void setUp() throws Exception {
    super.setUp();
    /*
     * Class parameters must be raw, so we can't create a proxy with generic
     * type arguments. The created proxy only records calls and returns null, so
     * the type is irrelevant at runtime.
     */
    mock = mock(LoadingCache.class);
    forward =
        new ForwardingLoadingCache<String, Boolean>() {
          @Override
          protected LoadingCache<String, Boolean> delegate() {
            return mock;
          }
        };
  }

  public void testGet() throws ExecutionException {
    when(mock.get("key")).thenReturn(true);
    assertThat(forward.get("key")).isEqualTo(true);
  }

  public void testGetUnchecked() {
    when(mock.getUnchecked("key")).thenReturn(true);
    assertThat(forward.getUnchecked("key")).isEqualTo(true);
  }

  public void testGetAll() throws ExecutionException {
    when(mock.getAll(ImmutableList.of("key"))).thenReturn(ImmutableMap.of("key", true));
    assertThat(forward.getAll(ImmutableList.of("key"))).containsExactly("key", true);
  }

  public void testApply() {
    when(mock.apply("key")).thenReturn(true);
    assertThat(forward.apply("key")).isEqualTo(true);
  }

  public void testInvalidate() {
    forward.invalidate("key");
    verify(mock).invalidate("key");
  }

  public void testRefresh() {
    forward.refresh("key");
    verify(mock).refresh("key");
  }

  public void testInvalidateAll() {
    forward.invalidateAll();
    verify(mock).invalidateAll();
  }

  public void testSize() {
    when(mock.size()).thenReturn(42L);
    assertThat(forward.size()).isEqualTo(42);
  }

  public void testStats() {
    CacheStats stats = new CacheStats(0, 0, 0, 0, 0, 0);
    when(mock.stats()).thenReturn(stats);
    assertThat(forward.stats()).isEqualTo(stats);
  }

  public void testAsMap() {
    when(mock.asMap()).thenReturn(new ConcurrentHashMap<>(ImmutableMap.of("key", true)));
    assertThat(forward.asMap()).containsExactly("key", true);
  }

  public void testCleanUp() {
    forward.cleanUp();
    verify(mock).cleanUp();
  }

  /** Make sure that all methods are forwarded. */
  @Keep
  private static class OnlyGet<K, V> extends ForwardingLoadingCache<K, V> {
    @Override
    protected LoadingCache<K, V> delegate() {
      throw new AssertionError();
    }
  }
}