1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package libcore.java.util; 19 20 import java.util.ConcurrentModificationException; 21 import java.util.Iterator; 22 import java.util.LinkedHashMap; 23 import junit.framework.TestCase; 24 25 public class OldLinkedHashMapTest extends TestCase { 26 27 public void testLinkedHashMap() { 28 // we want to test the LinkedHashMap in access ordering mode. 29 LinkedHashMap map = new LinkedHashMap<String, String>(10, 0.75f, true); 30 31 map.put("key1", "value1"); 32 map.put("key2", "value2"); 33 map.put("key3", "value3"); 34 35 Iterator iterator = map.keySet().iterator(); 36 String id = (String) iterator.next(); 37 map.get(id); 38 try { 39 iterator.next(); 40 // A LinkedHashMap is supposed to throw this Exception when a 41 // iterator.next() Operation takes place after a get 42 // Operation. This is because the get Operation is considered 43 // a structural modification if the LinkedHashMap is in 44 // access order mode. 45 fail("expected ConcurrentModificationException was not thrown."); 46 } catch(ConcurrentModificationException expected) { 47 } 48 49 LinkedHashMap mapClone = (LinkedHashMap) map.clone(); 50 51 iterator = map.keySet().iterator(); 52 id = (String) iterator.next(); 53 mapClone.get(id); 54 iterator.next(); 55 56 try { 57 new LinkedHashMap<String, String>(-10, 0.75f, true); 58 fail("IllegalArgumentException expected"); 59 } catch (IllegalArgumentException expected) { 60 } 61 62 try { 63 new LinkedHashMap<String, String>(10, -0.75f, true); 64 fail("IllegalArgumentException expected"); 65 } catch (IllegalArgumentException expected) { 66 } 67 } 68 } 69
