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.junit.Ignore;
027
028/**
029 * Common parent class for {@link ListIndexOfTester} and {@link ListLastIndexOfTester}.
030 *
031 * @author Chris Povirk
032 */
033@GwtCompatible
034@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
035public abstract class AbstractListIndexOfTester<E> extends AbstractListTester<E> {
036  /** Override to call {@code indexOf()} or {@code lastIndexOf()}. */
037  protected abstract int find(Object o);
038
039  /** Override to return "indexOf" or "lastIndexOf()" for use in failure messages. */
040  protected abstract String getMethodName();
041
042  @CollectionSize.Require(absent = ZERO)
043  public void testFind_yes() {
044    assertEquals(
045        getMethodName() + "(firstElement) should return 0", 0, find(getOrderedElements().get(0)));
046  }
047
048  public void testFind_no() {
049    assertEquals(getMethodName() + "(notPresent) should return -1", -1, find(e3()));
050  }
051
052  @CollectionFeature.Require(ALLOWS_NULL_VALUES)
053  public void testFind_nullNotContainedButSupported() {
054    assertEquals(getMethodName() + "(nullNotPresent) should return -1", -1, find(null));
055  }
056
057  @CollectionFeature.Require(absent = ALLOWS_NULL_VALUES)
058  public void testFind_nullNotContainedAndUnsupported() {
059    try {
060      assertEquals(getMethodName() + "(nullNotPresent) should return -1 or throw", -1, find(null));
061    } catch (NullPointerException tolerated) {
062    }
063  }
064
065  @CollectionFeature.Require(ALLOWS_NULL_VALUES)
066  @CollectionSize.Require(absent = ZERO)
067  public void testFind_nonNullWhenNullContained() {
068    initCollectionWithNullElement();
069    assertEquals(getMethodName() + "(notPresent) should return -1", -1, find(e3()));
070  }
071
072  @CollectionFeature.Require(ALLOWS_NULL_VALUES)
073  @CollectionSize.Require(absent = ZERO)
074  public void testFind_nullContained() {
075    initCollectionWithNullElement();
076    assertEquals(
077        getMethodName() + "(null) should return " + getNullLocation(),
078        getNullLocation(),
079        find(null));
080  }
081
082  public void testFind_wrongType() {
083    try {
084      assertEquals(
085          getMethodName() + "(wrongType) should return -1 or throw", -1, find(WrongType.VALUE));
086    } catch (ClassCastException tolerated) {
087    }
088  }
089}