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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.ALLOWS_NULL_VALUES;
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_ADD_ALL_WITH_INDEX;
import static com.google.common.collect.testing.features.ListFeature.SUPPORTS_ADD_WITH_INDEX;
import static java.util.Collections.singletonList;
import com.google.common.collect.testing.MinimalCollection;
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.List;
/**
* A generic JUnit test which tests {@code addAll(int, Collection)} 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
*/
@SuppressWarnings("unchecked") // too many "unchecked generic array creations"
public class ListAddAllAtIndexTester<E> extends AbstractListTester<E> {
@ListFeature.Require(SUPPORTS_ADD_ALL_WITH_INDEX)
@CollectionSize.Require(absent = ZERO)
public void testAddAllAtIndex_supportedAllPresent() {
assertTrue("addAll(n, allPresent) should return true",
getList().addAll(0, MinimalCollection.of(samples.e0)));
expectAdded(0, samples.e0);
}
@ListFeature.Require(absent = SUPPORTS_ADD_ALL_WITH_INDEX)
@CollectionSize.Require(absent = ZERO)
public void testAddAllAtIndex_unsupportedAllPresent() {
try {
getList().addAll(0, MinimalCollection.of(samples.e0));
fail("addAll(n, allPresent) should throw");
} catch (UnsupportedOperationException expected) {
}
expectUnchanged();
}
@ListFeature.Require(SUPPORTS_ADD_ALL_WITH_INDEX)
@CollectionSize.Require(absent = ZERO)
public void testAddAllAtIndex_supportedSomePresent() {
assertTrue("addAll(n, allPresent) should return true",
getList().addAll(0, MinimalCollection.of(samples.e0, samples.e3)));
expectAdded(0, samples.e0, samples.e3);
}
@ListFeature.Require(absent = SUPPORTS_ADD_ALL_WITH_INDEX)
@CollectionSize.Require(absent = ZERO)
public void testAddAllAtIndex_unsupportedSomePresent() {
try {
getList().addAll(0, MinimalCollection.of(samples.e0, samples.e3));
fail("addAll(n, allPresent) should throw");
} catch (UnsupportedOperationException expected) {
}
expectUnchanged();
expectMissing(samples.e3);
}
@ListFeature.Require(SUPPORTS_ADD_ALL_WITH_INDEX)
public void testAddAllAtIndex_supportedNothing() {
assertFalse("addAll(n, nothing) should return false",
getList().addAll(0, emptyCollection()));
expectUnchanged();
}
@ListFeature.Require(absent = SUPPORTS_ADD_ALL_WITH_INDEX)
public void testAddAllAtIndex_unsupportedNothing() {
try {
assertFalse("addAll(n, nothing) should return false or throw",
getList().addAll(0, emptyCollection()));
} catch (UnsupportedOperationException tolerated) {
}
expectUnchanged();
}
@ListFeature.Require(SUPPORTS_ADD_ALL_WITH_INDEX)
public void testAddAllAtIndex_withDuplicates() {
MinimalCollection<E> elementsToAdd
= MinimalCollection.of(samples.e0, samples.e1, samples.e0, samples.e1);
assertTrue("addAll(n, hasDuplicates) should return true",
getList().addAll(0, elementsToAdd));
expectAdded(0, samples.e0, samples.e1, samples.e0, samples.e1);
}
@ListFeature.Require(SUPPORTS_ADD_ALL_WITH_INDEX)
@CollectionFeature.Require(ALLOWS_NULL_VALUES)
public void testAddAllAtIndex_nullSupported() {
List<E> containsNull = singletonList(null);
assertTrue("addAll(n, containsNull) should return true",
getList().addAll(0, containsNull));
/*
* We need (E) to force interpretation of null as the single element of a
* varargs array, not the array itself
*/
expectAdded(0, (E) null);
}
@ListFeature.Require(SUPPORTS_ADD_ALL_WITH_INDEX)
@CollectionFeature.Require(absent = ALLOWS_NULL_VALUES)
public void testAddAllAtIndex_nullUnsupported() {
List<E> containsNull = singletonList(null);
try {
getList().addAll(0, containsNull);
fail("addAll(n, containsNull) should throw");
} catch (NullPointerException expected) {
}
expectUnchanged();
expectNullMissingWhenNullUnsupported(
"Should not contain null after unsupported addAll(n, containsNull)");
}
@ListFeature.Require(SUPPORTS_ADD_ALL_WITH_INDEX)
@CollectionSize.Require(absent = {ZERO, ONE})
public void testAddAllAtIndex_middle() {
assertTrue("addAll(middle, disjoint) should return true",
getList().addAll(getNumElements() / 2, createDisjointCollection()));
expectAdded(getNumElements() / 2, createDisjointCollection());
}
@ListFeature.Require(SUPPORTS_ADD_ALL_WITH_INDEX)
@CollectionSize.Require(absent = ZERO)
public void testAddAllAtIndex_end() {
assertTrue("addAll(end, disjoint) should return true",
getList().addAll(getNumElements(), createDisjointCollection()));
expectAdded(getNumElements(), createDisjointCollection());
}
@ListFeature.Require(SUPPORTS_ADD_ALL_WITH_INDEX)
public void testAddAllAtIndex_nullCollectionReference() {
try {
getList().addAll(0, null);
fail("addAll(n, null) should throw");
} catch (NullPointerException expected) {
}
expectUnchanged();
}
@ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
public void testAddAllAtIndex_negative() {
try {
getList().addAll(-1, MinimalCollection.of(samples.e3));
fail("addAll(-1, e) should throw");
} catch (IndexOutOfBoundsException expected) {
}
expectUnchanged();
expectMissing(samples.e3);
}
@ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
public void testAddAllAtIndex_tooLarge() {
try {
getList().addAll(getNumElements() + 1, MinimalCollection.of(samples.e3));
fail("addAll(size + 1, e) should throw");
} catch (IndexOutOfBoundsException expected) {
}
expectUnchanged();
expectMissing(samples.e3);
}
}
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