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.Helpers.assertEqualIgnoringOrder; 020import static com.google.common.collect.testing.Helpers.copyToList; 021import static com.google.common.collect.testing.features.CollectionFeature.KNOWN_ORDER; 022import static java.util.Arrays.asList; 023 024import com.google.common.annotations.GwtCompatible; 025import com.google.common.collect.testing.AbstractCollectionTester; 026import com.google.common.collect.testing.features.CollectionFeature; 027import java.util.ArrayList; 028import java.util.List; 029import org.junit.Ignore; 030 031/** 032 * A generic JUnit test which tests {@code forEach} operations on a collection. Can't be invoked 033 * directly; please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}. 034 * 035 * @author Louis Wasserman 036 */ 037@GwtCompatible 038@Ignore("test runners must not instantiate and run this directly, only via suites we build") 039// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 040@SuppressWarnings("JUnit4ClassUsedInJUnit3") 041public class CollectionForEachTester<E> extends AbstractCollectionTester<E> { 042 @CollectionFeature.Require(absent = KNOWN_ORDER) 043 public void testForEachUnknownOrder() { 044 List<E> elements = new ArrayList<>(); 045 collection.forEach(elements::add); 046 assertEqualIgnoringOrder(asList(createSamplesArray()), elements); 047 } 048 049 @CollectionFeature.Require(KNOWN_ORDER) 050 public void testForEachKnownOrder() { 051 List<E> elements = new ArrayList<>(); 052 collection.forEach(elements::add); 053 List<E> expected = copyToList(getOrderedElements()); 054 assertEquals("Different ordered iteration", expected, elements); 055 } 056}