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}