001/* 002 * Copyright (C) 2007 The Guava Authors 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package com.google.common.collect.testing.testers; 018 019import static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_VALUES; 020import static com.google.common.collect.testing.features.CollectionSize.ZERO; 021 022import com.google.common.annotations.GwtCompatible; 023import com.google.common.collect.testing.WrongType; 024import com.google.common.collect.testing.features.CollectionFeature; 025import com.google.common.collect.testing.features.CollectionSize; 026 027/** 028 * Common parent class for {@link ListIndexOfTester} and {@link ListLastIndexOfTester}. 029 * 030 * @author Chris Povirk 031 */ 032@GwtCompatible 033public abstract class AbstractListIndexOfTester<E> extends AbstractListTester<E> { 034 /** Override to call {@code indexOf()} or {@code lastIndexOf()}. */ 035 protected abstract int find(Object o); 036 037 /** Override to return "indexOf" or "lastIndexOf()" for use in failure messages. */ 038 protected abstract String getMethodName(); 039 040 @CollectionSize.Require(absent = ZERO) 041 public void testFind_yes() { 042 assertEquals( 043 getMethodName() + "(firstElement) should return 0", 0, find(getOrderedElements().get(0))); 044 } 045 046 public void testFind_no() { 047 assertEquals(getMethodName() + "(notPresent) should return -1", -1, find(e3())); 048 } 049 050 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 051 public void testFind_nullNotContainedButSupported() { 052 assertEquals(getMethodName() + "(nullNotPresent) should return -1", -1, find(null)); 053 } 054 055 @CollectionFeature.Require(absent = ALLOWS_NULL_VALUES) 056 public void testFind_nullNotContainedAndUnsupported() { 057 try { 058 assertEquals(getMethodName() + "(nullNotPresent) should return -1 or throw", -1, find(null)); 059 } catch (NullPointerException tolerated) { 060 } 061 } 062 063 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 064 @CollectionSize.Require(absent = ZERO) 065 public void testFind_nonNullWhenNullContained() { 066 initCollectionWithNullElement(); 067 assertEquals(getMethodName() + "(notPresent) should return -1", -1, find(e3())); 068 } 069 070 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 071 @CollectionSize.Require(absent = ZERO) 072 public void testFind_nullContained() { 073 initCollectionWithNullElement(); 074 assertEquals( 075 getMethodName() + "(null) should return " + getNullLocation(), 076 getNullLocation(), 077 find(null)); 078 } 079 080 public void testFind_wrongType() { 081 try { 082 assertEquals( 083 getMethodName() + "(wrongType) should return -1 or throw", -1, find(WrongType.VALUE)); 084 } catch (ClassCastException tolerated) { 085 } 086 } 087}