001/*
002 * Copyright (C) 2015 The Guava Authors
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package com.google.common.collect.testing.testers;
018
019import static com.google.common.collect.testing.features.CollectionSize.ZERO;
020import static com.google.common.collect.testing.features.ListFeature.SUPPORTS_SET;
021import static java.util.Collections.nCopies;
022import static org.junit.Assert.assertThrows;
023
024import com.google.common.annotations.GwtCompatible;
025import com.google.common.collect.testing.features.CollectionSize;
026import com.google.common.collect.testing.features.ListFeature;
027import java.util.List;
028
029/**
030 * A generic JUnit test which tests {@link List#replaceAll}. Can't be invoked directly; please see
031 * {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
032 *
033 * @author Louis Wasserman
034 */
035@GwtCompatible
036public class ListReplaceAllTester<E> extends AbstractListTester<E> {
037  @ListFeature.Require(SUPPORTS_SET)
038  public void testReplaceAll() {
039    getList().replaceAll(e -> samples.e3());
040    expectContents(nCopies(getNumElements(), samples.e3()));
041  }
042
043  @ListFeature.Require(SUPPORTS_SET)
044  public void testReplaceAll_changesSome() {
045    getList().replaceAll(e -> e.equals(samples.e0()) ? samples.e3() : e);
046    E[] expected = createSamplesArray();
047    for (int i = 0; i < expected.length; i++) {
048      if (expected[i].equals(samples.e0())) {
049        expected[i] = samples.e3();
050      }
051    }
052    expectContents(expected);
053  }
054
055  @CollectionSize.Require(absent = ZERO)
056  @ListFeature.Require(absent = SUPPORTS_SET)
057  public void testReplaceAll_unsupported() {
058    assertThrows(UnsupportedOperationException.class, () -> getList().replaceAll(e -> e));
059    expectUnchanged();
060  }
061}