1 /* 2 * Copyright (C) 2012 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.google; 18 19 import com.google.common.annotations.GwtCompatible; 20 import com.google.common.collect.BiMap; 21 import com.google.common.collect.testing.AbstractMapTester; 22 import com.google.common.collect.testing.Helpers; 23 24 import java.util.ArrayList; 25 import java.util.Collection; 26 import java.util.List; 27 import java.util.Map.Entry; 28 29 /** 30 * Skeleton for a tester of a {@code BiMap}. 31 */ 32 @GwtCompatible 33 public abstract class AbstractBiMapTester<K, V> extends AbstractMapTester<K, V> { 34 35 @Override getMap()36 protected BiMap<K, V> getMap() { 37 return (BiMap<K, V>) super.getMap(); 38 } 39 reverseEntry(Entry<K, V> entry)40 static <K, V> Entry<V, K> reverseEntry(Entry<K, V> entry) { 41 return Helpers.mapEntry(entry.getValue(), entry.getKey()); 42 } 43 44 @Override expectContents(Collection<Entry<K, V>> expected)45 protected void expectContents(Collection<Entry<K, V>> expected) { 46 super.expectContents(expected); 47 List<Entry<V, K>> reversedEntries = new ArrayList<Entry<V, K>>(); 48 for (Entry<K, V> entry : expected) { 49 reversedEntries.add(reverseEntry(entry)); 50 } 51 Helpers.assertEqualIgnoringOrder(getMap().inverse().entrySet(), reversedEntries); 52 53 for (Entry<K, V> entry : expected) { 54 assertEquals("Wrong key for value " + entry.getValue(), entry.getKey(), getMap() 55 .inverse() 56 .get(entry.getValue())); 57 } 58 } 59 60 @Override expectMissing(Entry<K, V>.... entries)61 protected void expectMissing(Entry<K, V>... entries) { 62 super.expectMissing(entries); 63 for (Entry<K, V> entry : entries) { 64 Entry<V, K> reversed = reverseEntry(entry); 65 BiMap<V, K> inv = getMap().inverse(); 66 assertFalse("Inverse should not contain entry " + reversed, 67 inv.entrySet().contains(entry)); 68 assertFalse("Inverse should not contain key " + entry.getValue(), 69 inv.containsKey(entry.getValue())); 70 assertFalse("Inverse should not contain value " + entry.getKey(), 71 inv.containsValue(entry.getKey())); 72 assertNull("Inverse should not return a mapping for key " + entry.getValue(), 73 getMap().get(entry.getValue())); 74 } 75 } 76 77 } 78