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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.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_ADD_WITH_INDEX;
import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
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.lang.reflect.Method;
import java.util.ConcurrentModificationException;
import java.util.Iterator;
/**
* A generic JUnit test which tests {@code add(int, 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 Chris Povirk
*/
@SuppressWarnings("unchecked") // too many "unchecked generic array creations"
@GwtCompatible(emulated = true)
public class ListAddAtIndexTester<E> extends AbstractListTester<E> {
@ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
@CollectionSize.Require(absent = ZERO)
public void testAddAtIndex_supportedPresent() {
getList().add(0, samples.e0);
expectAdded(0, samples.e0);
}
@ListFeature.Require(absent = SUPPORTS_ADD_WITH_INDEX)
@CollectionSize.Require(absent = ZERO)
/*
* absent = ZERO isn't required, since unmodList.add() must
* throw regardless, but it keeps the method name accurate.
*/
public void testAddAtIndex_unsupportedPresent() {
try {
getList().add(0, samples.e0);
fail("add(n, present) should throw");
} catch (UnsupportedOperationException expected) {
}
expectUnchanged();
}
@ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
public void testAddAtIndex_supportedNotPresent() {
getList().add(0, samples.e3);
expectAdded(0, samples.e3);
}
@CollectionFeature.Require(FAILS_FAST_ON_CONCURRENT_MODIFICATION)
@ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
public void testAddAtIndexConcurrentWithIteration() {
try {
Iterator<E> iterator = collection.iterator();
getList().add(0, samples.e3);
iterator.next();
fail("Expected ConcurrentModificationException");
} catch (ConcurrentModificationException expected) {
// success
}
}
@ListFeature.Require(absent = SUPPORTS_ADD_WITH_INDEX)
public void testAddAtIndex_unsupportedNotPresent() {
try {
getList().add(0, samples.e3);
fail("add(n, notPresent) should throw");
} catch (UnsupportedOperationException expected) {
}
expectUnchanged();
expectMissing(samples.e3);
}
@ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
@CollectionSize.Require(absent = {ZERO, ONE})
public void testAddAtIndex_middle() {
getList().add(getNumElements() / 2, samples.e3);
expectAdded(getNumElements() / 2, samples.e3);
}
@ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
@CollectionSize.Require(absent = ZERO)
public void testAddAtIndex_end() {
getList().add(getNumElements(), samples.e3);
expectAdded(getNumElements(), samples.e3);
}
@ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
@CollectionFeature.Require(ALLOWS_NULL_VALUES)
public void testAddAtIndex_nullSupported() {
getList().add(0, null);
expectAdded(0, (E) null);
}
@ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
@CollectionFeature.Require(absent = ALLOWS_NULL_VALUES)
public void testAddAtIndex_nullUnsupported() {
try {
getList().add(0, null);
fail("add(n, null) should throw");
} catch (NullPointerException expected) {
}
expectUnchanged();
expectNullMissingWhenNullUnsupported(
"Should not contain null after unsupported add(n, null)");
}
@ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
public void testAddAtIndex_negative() {
try {
getList().add(-1, samples.e3);
fail("add(-1, e) should throw");
} catch (IndexOutOfBoundsException expected) {
}
expectUnchanged();
expectMissing(samples.e3);
}
@ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
public void testAddAtIndex_tooLarge() {
try {
getList().add(getNumElements() + 1, samples.e3);
fail("add(size + 1, e) should throw");
} catch (IndexOutOfBoundsException expected) {
}
expectUnchanged();
expectMissing(samples.e3);
}
/**
* Returns the {@link Method} instance for
* {@link #testAddAtIndex_nullSupported()} so that tests can suppress it. See
* {@link CollectionAddTester#getAddNullSupportedMethod()} for details.
*/
@GwtIncompatible("reflection")
public static Method getAddNullSupportedMethod() {
return Helpers.getMethod(
ListAddAtIndexTester.class, "testAddAtIndex_nullSupported");
}
}
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