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.CollectionFeature.KNOWN_ORDER;
020
021import com.google.common.annotations.GwtCompatible;
022import com.google.common.collect.testing.AbstractCollectionTester;
023import com.google.common.collect.testing.Helpers;
024import com.google.common.collect.testing.features.CollectionFeature;
025import java.util.ArrayList;
026import java.util.Arrays;
027import java.util.List;
028
029/**
030 * A generic JUnit test which tests {@code forEach} operations on a collection. Can't be invoked
031 * directly; please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}.
032 *
033 * @author Louis Wasserman
034 */
035@GwtCompatible
036public class CollectionForEachTester<E> extends AbstractCollectionTester<E> {
037  @CollectionFeature.Require(absent = KNOWN_ORDER)
038  public void testForEachUnknownOrder() {
039    List<E> elements = new ArrayList<E>();
040    collection.forEach(elements::add);
041    Helpers.assertEqualIgnoringOrder(Arrays.asList(createSamplesArray()), elements);
042  }
043
044  @CollectionFeature.Require(KNOWN_ORDER)
045  public void testForEachKnownOrder() {
046    List<E> elements = new ArrayList<E>();
047    collection.forEach(elements::add);
048    List<E> expected = Helpers.copyToList(getOrderedElements());
049    assertEquals("Different ordered iteration", expected, elements);
050  }
051}