1 /* 2 * Copyright (C) 2015 The Guava Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.common.collect.testing.testers; 18 19 import static com.google.common.collect.testing.features.CollectionFeature.KNOWN_ORDER; 20 import static com.google.common.collect.testing.features.CollectionSize.ZERO; 21 import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEYS; 22 import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUES; 23 24 import com.google.common.annotations.GwtCompatible; 25 import com.google.common.collect.testing.AbstractMapTester; 26 import com.google.common.collect.testing.Helpers; 27 import com.google.common.collect.testing.features.CollectionFeature; 28 import com.google.common.collect.testing.features.CollectionSize; 29 import com.google.common.collect.testing.features.MapFeature; 30 import java.util.ArrayList; 31 import java.util.Arrays; 32 import java.util.List; 33 import java.util.Map; 34 import java.util.Map.Entry; 35 import org.junit.Ignore; 36 37 /** 38 * A generic JUnit test which tests {@link Map#forEach}. Can't be invoked directly; please see 39 * {@link com.google.common.collect.testing.MapTestSuiteBuilder}. 40 * 41 * @author Louis Wasserman 42 */ 43 @GwtCompatible 44 @Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 45 public class MapForEachTester<K, V> extends AbstractMapTester<K, V> { 46 @CollectionFeature.Require(KNOWN_ORDER) testForEachKnownOrder()47 public void testForEachKnownOrder() { 48 List<Entry<K, V>> entries = new ArrayList<>(); 49 getMap().forEach((k, v) -> entries.add(entry(k, v))); 50 assertEquals(getOrderedElements(), entries); 51 } 52 53 @CollectionFeature.Require(absent = KNOWN_ORDER) testForEachUnknownOrder()54 public void testForEachUnknownOrder() { 55 List<Entry<K, V>> entries = new ArrayList<>(); 56 getMap().forEach((k, v) -> entries.add(entry(k, v))); 57 Helpers.assertEqualIgnoringOrder(getSampleEntries(), entries); 58 } 59 60 @MapFeature.Require(ALLOWS_NULL_KEYS) 61 @CollectionSize.Require(absent = ZERO) testForEach_nullKeys()62 public void testForEach_nullKeys() { 63 initMapWithNullKey(); 64 List<Entry<K, V>> expectedEntries = Arrays.asList(createArrayWithNullKey()); 65 List<Entry<K, V>> entries = new ArrayList<>(); 66 getMap().forEach((k, v) -> entries.add(entry(k, v))); 67 Helpers.assertEqualIgnoringOrder(expectedEntries, entries); 68 } 69 70 @MapFeature.Require(ALLOWS_NULL_VALUES) 71 @CollectionSize.Require(absent = ZERO) testForEach_nullValues()72 public void testForEach_nullValues() { 73 initMapWithNullValue(); 74 List<Entry<K, V>> expectedEntries = Arrays.asList(createArrayWithNullValue()); 75 List<Entry<K, V>> entries = new ArrayList<>(); 76 getMap().forEach((k, v) -> entries.add(entry(k, v))); 77 Helpers.assertEqualIgnoringOrder(expectedEntries, entries); 78 } 79 } 80