1 /* 2 * Copyright (C) 2012 The Guava Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 5 * in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the License 10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 11 * or implied. See the License for the specific language governing permissions and limitations under 12 * the License. 13 */ 14 15 package com.google.common.collect; 16 17 import junit.framework.TestCase; 18 19 import java.util.IdentityHashMap; 20 import java.util.Iterator; 21 import java.util.Map.Entry; 22 23 /** 24 * Tests for {@code AbstractBiMap}. 25 * 26 * @author Mike Bostock 27 */ 28 public class AbstractBiMapTest extends TestCase { 29 30 // The next two tests verify that map entries are not accessed after they're 31 // removed, since IdentityHashMap throws an exception when that occurs. 32 public void testIdentityKeySetIteratorRemove() { 33 BiMap<Integer, String> bimap = new AbstractBiMap<Integer, String>( 34 new IdentityHashMap<Integer, String>(), 35 new IdentityHashMap<String, Integer>()) {}; 36 bimap.put(1, "one"); 37 bimap.put(2, "two"); 38 bimap.put(3, "three"); 39 Iterator<Integer> iterator = bimap.keySet().iterator(); 40 iterator.next(); 41 iterator.next(); 42 iterator.remove(); 43 iterator.next(); 44 iterator.remove(); 45 assertEquals(1, bimap.size()); 46 assertEquals(1, bimap.inverse().size()); 47 } 48 49 public void testIdentityEntrySetIteratorRemove() { 50 BiMap<Integer, String> bimap = new AbstractBiMap<Integer, String>( 51 new IdentityHashMap<Integer, String>(), 52 new IdentityHashMap<String, Integer>()) {}; 53 bimap.put(1, "one"); 54 bimap.put(2, "two"); 55 bimap.put(3, "three"); 56 Iterator<Entry<Integer, String>> iterator = bimap.entrySet().iterator(); 57 iterator.next(); 58 iterator.next(); 59 iterator.remove(); 60 iterator.next(); 61 iterator.remove(); 62 assertEquals(1, bimap.size()); 63 assertEquals(1, bimap.inverse().size()); 64 } 65 } 66
