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.features.CollectionFeature.KNOWN_ORDER; 020 021import com.google.common.annotations.GwtCompatible; 022import com.google.common.annotations.GwtIncompatible; 023import com.google.common.collect.Multiset.Entry; 024import com.google.common.collect.Multisets; 025import com.google.common.collect.testing.Helpers; 026import com.google.common.collect.testing.features.CollectionFeature; 027import java.lang.reflect.Method; 028import java.util.ArrayList; 029import java.util.Arrays; 030import java.util.Collections; 031import java.util.List; 032import org.junit.Ignore; 033 034/** 035 * Tests for {@code Multiset#forEachEntry}. 036 * 037 * @author Louis Wasserman 038 */ 039@GwtCompatible(emulated = true) 040@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 041public class MultisetForEachEntryTester<E> extends AbstractMultisetTester<E> { 042 public void testForEachEntry() { 043 List<Entry<E>> expected = new ArrayList<>(getMultiset().entrySet()); 044 List<Entry<E>> actual = new ArrayList<>(); 045 getMultiset() 046 .forEachEntry((element, count) -> actual.add(Multisets.immutableEntry(element, count))); 047 Helpers.assertEqualIgnoringOrder(expected, actual); 048 } 049 050 @CollectionFeature.Require(KNOWN_ORDER) 051 public void testForEachEntryOrdered() { 052 List<Entry<E>> expected = new ArrayList<>(getMultiset().entrySet()); 053 List<Entry<E>> actual = new ArrayList<>(); 054 getMultiset() 055 .forEachEntry((element, count) -> actual.add(Multisets.immutableEntry(element, count))); 056 assertEquals(expected, actual); 057 } 058 059 public void testForEachEntryDuplicates() { 060 initThreeCopies(); 061 List<Entry<E>> expected = Collections.singletonList(Multisets.immutableEntry(e0(), 3)); 062 List<Entry<E>> actual = new ArrayList<>(); 063 getMultiset() 064 .forEachEntry((element, count) -> actual.add(Multisets.immutableEntry(element, count))); 065 assertEquals(expected, actual); 066 } 067 068 /** 069 * Returns {@link Method} instances for the remove tests that assume multisets support duplicates 070 * so that the test of {@code Multisets.forSet()} can suppress them. 071 */ 072 @GwtIncompatible // reflection 073 public static List<Method> getForEachEntryDuplicateInitializingMethods() { 074 return Arrays.asList( 075 Helpers.getMethod(MultisetForEachEntryTester.class, "testForEachEntryDuplicates")); 076 } 077}