001/* 002 * Copyright (C) 2008 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.SUPPORTS_REMOVE; 020import static com.google.common.collect.testing.features.CollectionSize.ONE; 021import static com.google.common.collect.testing.features.CollectionSize.ZERO; 022 023import com.google.common.annotations.GwtCompatible; 024import com.google.common.collect.testing.features.CollectionFeature; 025import com.google.common.collect.testing.features.CollectionSize; 026import org.junit.Ignore; 027 028/** 029 * A generic JUnit test which tests {@code remove(Object)} operations on a list. Can't be invoked 030 * directly; please see {@link com.google.common.collect.testing.ListTestSuiteBuilder}. 031 * 032 * @author George van den Driessche 033 */ 034@GwtCompatible 035@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests. 036public class ListRemoveTester<E> extends AbstractListTester<E> { 037 @CollectionFeature.Require(SUPPORTS_REMOVE) 038 @CollectionSize.Require(absent = {ZERO, ONE}) 039 public void testRemove_duplicate() { 040 ArrayWithDuplicate<E> arrayAndDuplicate = createArrayWithDuplicateElement(); 041 collection = getSubjectGenerator().create(arrayAndDuplicate.elements); 042 E duplicate = arrayAndDuplicate.duplicate; 043 044 int firstIndex = getList().indexOf(duplicate); 045 int initialSize = getList().size(); 046 assertTrue("remove(present) should return true", getList().remove(duplicate)); 047 assertTrue( 048 "After remove(duplicate), a list should still contain the duplicate element", 049 getList().contains(duplicate)); 050 assertFalse( 051 "remove(duplicate) should remove the first instance of the " 052 + "duplicate element in the list", 053 firstIndex == getList().indexOf(duplicate)); 054 assertEquals( 055 "remove(present) should decrease the size of a list by one.", 056 initialSize - 1, 057 getList().size()); 058 } 059}