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/*
* Copyright (C) 2008 The Guava Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.common.collect.testing.testers;
import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_REMOVE;
import static com.google.common.collect.testing.features.CollectionSize.ONE;
import static com.google.common.collect.testing.features.CollectionSize.ZERO;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
/**
* A generic JUnit test which tests {@code remove(Object)} operations on a list.
* Can't be invoked directly; please see
* {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
*
* <p>This class is GWT compatible.
*
* @author George van den Driessche
*/
public class ListRemoveTester<E> extends AbstractListTester<E> {
@CollectionFeature.Require(SUPPORTS_REMOVE)
@CollectionSize.Require(absent = {ZERO, ONE})
public void testRemove_duplicate() {
ArrayWithDuplicate<E> arrayAndDuplicate = createArrayWithDuplicateElement();
collection = getSubjectGenerator().create(arrayAndDuplicate.elements);
E duplicate = arrayAndDuplicate.duplicate;
int firstIndex = getList().indexOf(duplicate);
int initialSize = getList().size();
assertTrue("remove(present) should return true",
getList().remove(duplicate));
assertTrue("After remove(duplicate), a list should still contain "
+ "the duplicate element", getList().contains(duplicate));
assertFalse("remove(duplicate) should remove the first instance of the "
+ "duplicate element in the list",
firstIndex == getList().indexOf(duplicate));
assertEquals("remove(present) should decrease the size of a list by one.",
initialSize - 1, getList().size());
}
}
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