001/* 002 * Copyright (C) 2016 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.google; 018 019import static com.google.common.collect.testing.Helpers.assertEqualIgnoringOrder; 020import static com.google.common.collect.testing.Helpers.getMethod; 021import static com.google.common.collect.testing.features.CollectionFeature.KNOWN_ORDER; 022import static java.util.Arrays.asList; 023import static java.util.Collections.singletonList; 024 025import com.google.common.annotations.GwtCompatible; 026import com.google.common.annotations.GwtIncompatible; 027import com.google.common.annotations.J2ktIncompatible; 028import com.google.common.collect.Multiset.Entry; 029import com.google.common.collect.Multisets; 030import com.google.common.collect.testing.features.CollectionFeature; 031import java.lang.reflect.Method; 032import java.util.ArrayList; 033import java.util.List; 034import org.junit.Ignore; 035 036/** 037 * Tests for {@code Multiset#forEachEntry}. 038 * 039 * @author Louis Wasserman 040 */ 041@GwtCompatible(emulated = true) 042@Ignore("test runners must not instantiate and run this directly, only via suites we build") 043// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 044@SuppressWarnings("JUnit4ClassUsedInJUnit3") 045public class MultisetForEachEntryTester<E> extends AbstractMultisetTester<E> { 046 public void testForEachEntry() { 047 List<Entry<E>> expected = new ArrayList<>(getMultiset().entrySet()); 048 List<Entry<E>> actual = new ArrayList<>(); 049 getMultiset() 050 .forEachEntry((element, count) -> actual.add(Multisets.immutableEntry(element, count))); 051 assertEqualIgnoringOrder(expected, actual); 052 } 053 054 @CollectionFeature.Require(KNOWN_ORDER) 055 public void testForEachEntryOrdered() { 056 List<Entry<E>> expected = new ArrayList<>(getMultiset().entrySet()); 057 List<Entry<E>> actual = new ArrayList<>(); 058 getMultiset() 059 .forEachEntry((element, count) -> actual.add(Multisets.immutableEntry(element, count))); 060 assertEquals(expected, actual); 061 } 062 063 public void testForEachEntryDuplicates() { 064 initThreeCopies(); 065 List<Entry<E>> expected = singletonList(Multisets.immutableEntry(e0(), 3)); 066 List<Entry<E>> actual = new ArrayList<>(); 067 getMultiset() 068 .forEachEntry((element, count) -> actual.add(Multisets.immutableEntry(element, count))); 069 assertEquals(expected, actual); 070 } 071 072 /** 073 * Returns {@link Method} instances for the remove tests that assume multisets support duplicates 074 * so that the test of {@code Multisets.forSet()} can suppress them. 075 */ 076 @J2ktIncompatible 077 @GwtIncompatible // reflection 078 public static List<Method> getForEachEntryDuplicateInitializingMethods() { 079 return asList(getMethod(MultisetForEachEntryTester.class, "testForEachEntryDuplicates")); 080 } 081}