1 /* 2 * Copyright (C) 2007 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.ALLOWS_NULL_VALUES; 20 import static com.google.common.collect.testing.features.CollectionSize.ZERO; 21 22 import com.google.common.annotations.GwtCompatible; 23 import com.google.common.collect.testing.WrongType; 24 import com.google.common.collect.testing.features.CollectionFeature; 25 import com.google.common.collect.testing.features.CollectionSize; 26 27 /** 28 * Common parent class for {@link ListIndexOfTester} and 29 * {@link ListLastIndexOfTester}. 30 * 31 * @author Chris Povirk 32 */ 33 @GwtCompatible 34 public abstract class AbstractListIndexOfTester<E> 35 extends AbstractListTester<E> { 36 /** Override to call {@code indexOf()} or {@code lastIndexOf()}. */ 37 protected abstract int find(Object o); 38 39 /** 40 * Override to return "indexOf" or "lastIndexOf()" for use in failure 41 * messages. 42 */ 43 protected abstract String getMethodName(); 44 45 @CollectionSize.Require(absent = ZERO) 46 public void testFind_yes() { 47 assertEquals(getMethodName() + "(firstElement) should return 0", 48 0, find(getOrderedElements().get(0))); 49 } 50 51 public void testFind_no() { 52 assertEquals(getMethodName() + "(notPresent) should return -1", 53 -1, find(samples.e3)); 54 } 55 56 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 57 public void testFind_nullNotContainedButSupported() { 58 assertEquals(getMethodName() + "(nullNotPresent) should return -1", 59 -1, find(null)); 60 } 61 62 @CollectionFeature.Require(absent = ALLOWS_NULL_VALUES) 63 public void testFind_nullNotContainedAndUnsupported() { 64 try { 65 assertEquals( 66 getMethodName() + "(nullNotPresent) should return -1 or throw", 67 -1, find(null)); 68 } catch (NullPointerException tolerated) { 69 } 70 } 71 72 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 73 @CollectionSize.Require(absent = ZERO) 74 public void testFind_nonNullWhenNullContained() { 75 initCollectionWithNullElement(); 76 assertEquals(getMethodName() + "(notPresent) should return -1", 77 -1, find(samples.e3)); 78 } 79 80 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 81 @CollectionSize.Require(absent = ZERO) 82 public void testFind_nullContained() { 83 initCollectionWithNullElement(); 84 assertEquals(getMethodName() + "(null) should return " + getNullLocation(), 85 getNullLocation(), find(null)); 86 } 87 88 public void testFind_wrongType() { 89 try { 90 assertEquals(getMethodName() + "(wrongType) should return -1 or throw", 91 -1, find(WrongType.VALUE)); 92 } catch (ClassCastException tolerated) { 93 } 94 } 95 } 96
