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/*
* Copyright (C) 2012 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.google;
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_QUERIES;
import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.Multimap;
import com.google.common.collect.testing.features.CollectionSize;
import com.google.common.collect.testing.features.MapFeature;
/**
* Tester for the {@code containsKey} methods of {@code Multimap} and its {@code asMap()} view.
*
* @author Louis Wasserman
*/
@GwtCompatible
public class MultimapContainsKeyTester<K, V>
extends AbstractMultimapTester<K, V, Multimap<K, V>> {
@CollectionSize.Require(absent = ZERO)
public void testContainsKeyYes() {
assertTrue(multimap().containsKey(sampleKeys().e0));
}
public void testContainsKeyNo() {
assertFalse(multimap().containsKey(sampleKeys().e3));
}
public void testContainsKeysFromKeySet() {
for (K k : multimap().keySet()) {
assertTrue(multimap().containsKey(k));
}
}
public void testContainsKeyAgreesWithGet() {
for (K k : sampleKeys()) {
assertEquals(!multimap().get(k).isEmpty(), multimap().containsKey(k));
}
}
public void testContainsKeyAgreesWithAsMap() {
for (K k : sampleKeys()) {
assertEquals(multimap().containsKey(k), multimap().asMap().containsKey(k));
}
}
public void testContainsKeyAgreesWithKeySet() {
for (K k : sampleKeys()) {
assertEquals(multimap().containsKey(k), multimap().keySet().contains(k));
}
}
@MapFeature.Require(ALLOWS_NULL_KEYS)
@CollectionSize.Require(absent = ZERO)
public void testContainsKeyNullPresent() {
initMultimapWithNullKey();
assertTrue(multimap().containsKey(null));
}
@MapFeature.Require(ALLOWS_NULL_QUERIES)
public void testContainsKeyNullAbsent() {
assertFalse(multimap().containsKey(null));
}
@MapFeature.Require(absent = ALLOWS_NULL_QUERIES)
public void testContainsKeyNullDisallowed() {
try {
multimap().containsKey(null);
fail("Expected NullPointerException");
} catch (NullPointerException expected) {
// success
}
}
}
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