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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.FAILS_FAST_ON_CONCURRENT_MODIFICATION;
import static com.google.common.collect.testing.features.CollectionSize.ONE;
import static com.google.common.collect.testing.features.CollectionSize.ZERO;
import static com.google.common.collect.testing.features.ListFeature.SUPPORTS_REMOVE_WITH_INDEX;
import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.testing.Helpers;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import com.google.common.collect.testing.features.ListFeature;
import java.util.ConcurrentModificationException;
import java.util.Iterator;
import java.util.List;
/**
* A generic JUnit test which tests {@code remove(int)} 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 Chris Povirk
*/
@GwtCompatible
public class ListRemoveAtIndexTester<E> extends AbstractListTester<E> {
@ListFeature.Require(absent = SUPPORTS_REMOVE_WITH_INDEX)
@CollectionSize.Require(absent = ZERO)
public void testRemoveAtIndex_unsupported() {
try {
getList().remove(0);
fail("remove(i) should throw");
} catch (UnsupportedOperationException expected) {
}
expectUnchanged();
}
@ListFeature.Require(SUPPORTS_REMOVE_WITH_INDEX)
public void testRemoveAtIndex_negative() {
try {
getList().remove(-1);
fail("remove(-1) should throw");
} catch (IndexOutOfBoundsException expected) {
}
expectUnchanged();
}
@ListFeature.Require(SUPPORTS_REMOVE_WITH_INDEX)
public void testRemoveAtIndex_tooLarge() {
try {
getList().remove(getNumElements());
fail("remove(size) should throw");
} catch (IndexOutOfBoundsException expected) {
}
expectUnchanged();
}
@ListFeature.Require(SUPPORTS_REMOVE_WITH_INDEX)
@CollectionSize.Require(absent = ZERO)
public void testRemoveAtIndex_first() {
runRemoveTest(0);
}
@ListFeature.Require(SUPPORTS_REMOVE_WITH_INDEX)
@CollectionSize.Require(absent = {ZERO, ONE})
public void testRemoveAtIndex_middle() {
runRemoveTest(getNumElements() / 2);
}
@CollectionFeature.Require(FAILS_FAST_ON_CONCURRENT_MODIFICATION)
@ListFeature.Require(SUPPORTS_REMOVE_WITH_INDEX)
@CollectionSize.Require(absent = ZERO)
public void testRemoveAtIndexConcurrentWithIteration() {
try {
Iterator<E> iterator = collection.iterator();
getList().remove(getNumElements() / 2);
iterator.next();
fail("Expected ConcurrentModificationException");
} catch (ConcurrentModificationException expected) {
// success
}
}
@ListFeature.Require(SUPPORTS_REMOVE_WITH_INDEX)
@CollectionSize.Require(absent = ZERO)
public void testRemoveAtIndex_last() {
runRemoveTest(getNumElements() - 1);
}
private void runRemoveTest(int index) {
assertEquals(Platform.format(
"remove(%d) should return the element at index %d", index, index),
getList().get(index), getList().remove(index));
List<E> expected = Helpers.copyToList(createSamplesArray());
expected.remove(index);
expectContents(expected);
}
}
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