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/*
* Copyright (C) 2007 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.CollectionSize.ONE;
import static com.google.common.collect.testing.features.CollectionSize.ZERO;
import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_KEYS;
import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUES;
import static com.google.common.collect.testing.features.MapFeature.REJECTS_DUPLICATES_AT_CREATION;
import com.google.common.collect.testing.AbstractMapTester;
import com.google.common.collect.testing.features.CollectionSize;
import com.google.common.collect.testing.features.MapFeature;
import java.util.Arrays;
import java.util.List;
import java.util.Map.Entry;
/**
* A generic JUnit test which tests creation (typically through a constructor or
* static factory method) of a map. Can't be invoked directly; please see
* {@link com.google.common.collect.testing.MapTestSuiteBuilder}.
*
* <p>This class is GWT compatible.
*
* @author Chris Povirk
* @author Kevin Bourrillion
*/
public class MapCreationTester<K, V> extends AbstractMapTester<K, V> {
@MapFeature.Require(ALLOWS_NULL_KEYS)
@CollectionSize.Require(absent = ZERO)
public void testCreateWithNullKeySupported() {
initMapWithNullKey();
expectContents(createArrayWithNullKey());
}
@MapFeature.Require(absent = ALLOWS_NULL_KEYS)
@CollectionSize.Require(absent = ZERO)
public void testCreateWithNullKeyUnsupported() {
try {
initMapWithNullKey();
fail("Creating a map containing a null key should fail");
} catch (NullPointerException expected) {
}
}
@MapFeature.Require(ALLOWS_NULL_VALUES)
@CollectionSize.Require(absent = ZERO)
public void testCreateWithNullValueSupported() {
initMapWithNullValue();
expectContents(createArrayWithNullValue());
}
@MapFeature.Require(absent = ALLOWS_NULL_VALUES)
@CollectionSize.Require(absent = ZERO)
public void testCreateWithNullValueUnsupported() {
try {
initMapWithNullValue();
fail("Creating a map containing a null value should fail");
} catch (NullPointerException expected) {
}
}
@MapFeature.Require({ALLOWS_NULL_KEYS, ALLOWS_NULL_VALUES})
@CollectionSize.Require(absent = ZERO)
public void testCreateWithNullKeyAndValueSupported() {
Entry<K, V>[] entries = createSamplesArray();
entries[getNullLocation()] = entry(null, null);
resetMap(entries);
expectContents(entries);
}
@MapFeature.Require(value = ALLOWS_NULL_KEYS,
absent = REJECTS_DUPLICATES_AT_CREATION)
@CollectionSize.Require(absent = {ZERO, ONE})
public void testCreateWithDuplicates_nullDuplicatesNotRejected() {
expectFirstRemoved(getEntriesMultipleNullKeys());
}
@MapFeature.Require(absent = REJECTS_DUPLICATES_AT_CREATION)
@CollectionSize.Require(absent = {ZERO, ONE})
public void testCreateWithDuplicates_nonNullDuplicatesNotRejected() {
expectFirstRemoved(getEntriesMultipleNonNullKeys());
}
@MapFeature.Require({ALLOWS_NULL_KEYS, REJECTS_DUPLICATES_AT_CREATION})
@CollectionSize.Require(absent = {ZERO, ONE})
public void testCreateWithDuplicates_nullDuplicatesRejected() {
Entry<K, V>[] entries = getEntriesMultipleNullKeys();
try {
resetMap(entries);
fail("Should reject duplicate null elements at creation");
} catch (IllegalArgumentException expected) {
}
}
@MapFeature.Require(REJECTS_DUPLICATES_AT_CREATION)
@CollectionSize.Require(absent = {ZERO, ONE})
public void testCreateWithDuplicates_nonNullDuplicatesRejected() {
Entry<K, V>[] entries = getEntriesMultipleNonNullKeys();
try {
resetMap(entries);
fail("Should reject duplicate non-null elements at creation");
} catch (IllegalArgumentException expected) {
}
}
private Entry<K, V>[] getEntriesMultipleNullKeys() {
Entry<K, V>[] entries = createArrayWithNullKey();
entries[0] = entries[getNullLocation()];
return entries;
}
private Entry<K, V>[] getEntriesMultipleNonNullKeys() {
Entry<K, V>[] entries = createSamplesArray();
entries[0] = samples.e1;
return entries;
}
private void expectFirstRemoved(Entry<K, V>[] entries) {
resetMap(entries);
List<Entry<K, V>> expectedWithDuplicateRemoved =
Arrays.asList(entries).subList(1, getNumElements());
expectContents(expectedWithDuplicateRemoved);
}
}
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