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; 026import org.jspecify.annotations.Nullable; 027import org.junit.Ignore; 028 029/** 030 * Common parent class for {@link ListIndexOfTester} and {@link ListLastIndexOfTester}. 031 * 032 * @author Chris Povirk 033 */ 034@GwtCompatible 035@Ignore("test runners must not instantiate and run this directly, only via suites we build") 036// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 037@SuppressWarnings("JUnit4ClassUsedInJUnit3") 038public abstract class AbstractListIndexOfTester<E> extends AbstractListTester<E> { 039 /** Override to call {@code indexOf()} or {@code lastIndexOf()}. */ 040 protected abstract int find(@Nullable Object o); 041 042 /** Override to return "indexOf" or "lastIndexOf()" for use in failure messages. */ 043 protected abstract String getMethodName(); 044 045 @CollectionSize.Require(absent = ZERO) 046 public void testFind_yes() { 047 assertEquals( 048 getMethodName() + "(firstElement) should return 0", 0, find(getOrderedElements().get(0))); 049 } 050 051 public void testFind_no() { 052 assertEquals(getMethodName() + "(notPresent) should return -1", -1, find(e3())); 053 } 054 055 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 056 public void testFind_nullNotContainedButSupported() { 057 assertEquals(getMethodName() + "(nullNotPresent) should return -1", -1, find(null)); 058 } 059 060 @CollectionFeature.Require(absent = ALLOWS_NULL_VALUES) 061 public void testFind_nullNotContainedAndUnsupported() { 062 try { 063 assertEquals(getMethodName() + "(nullNotPresent) should return -1 or throw", -1, find(null)); 064 } catch (NullPointerException tolerated) { 065 } 066 } 067 068 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 069 @CollectionSize.Require(absent = ZERO) 070 public void testFind_nonNullWhenNullContained() { 071 initCollectionWithNullElement(); 072 assertEquals(getMethodName() + "(notPresent) should return -1", -1, find(e3())); 073 } 074 075 @CollectionFeature.Require(ALLOWS_NULL_VALUES) 076 @CollectionSize.Require(absent = ZERO) 077 public void testFind_nullContained() { 078 initCollectionWithNullElement(); 079 assertEquals( 080 getMethodName() + "(null) should return " + getNullLocation(), 081 getNullLocation(), 082 find(null)); 083 } 084 085 public void testFind_wrongType() { 086 try { 087 assertEquals( 088 getMethodName() + "(wrongType) should return -1 or throw", -1, find(WrongType.VALUE)); 089 } catch (ClassCastException tolerated) { 090 } 091 } 092}