/
AbstractMultimapTester.java
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/
AbstractMultimapTester.java
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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.Helpers.assertEqualIgnoringOrder;
import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.Multimap;
import com.google.common.collect.testing.AbstractContainerTester;
import com.google.common.collect.testing.Helpers;
import com.google.common.collect.testing.SampleElements;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map.Entry;
import org.checkerframework.checker.nullness.qual.Nullable;
import org.junit.Ignore;
/**
* Superclass for all {@code Multimap} testers.
*
* @author Louis Wasserman
*/
@GwtCompatible
@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@ElementTypesAreNonnullByDefault
public abstract class AbstractMultimapTester<
K extends @Nullable Object, V extends @Nullable Object, M extends Multimap<K, V>>
extends AbstractContainerTester<M, Entry<K, V>> {
private M multimap;
protected M multimap() {
return multimap;
}
/**
* @return an array of the proper size with {@code null} as the key of the middle element.
*/
protected Entry<K, V>[] createArrayWithNullKey() {
Entry<K, V>[] array = createSamplesArray();
int nullKeyLocation = getNullLocation();
Entry<K, V> oldEntry = array[nullKeyLocation];
array[nullKeyLocation] = Helpers.mapEntry(null, oldEntry.getValue());
return array;
}
/**
* @return an array of the proper size with {@code null} as the value of the middle element.
*/
protected Entry<K, V>[] createArrayWithNullValue() {
Entry<K, V>[] array = createSamplesArray();
int nullValueLocation = getNullLocation();
Entry<K, V> oldEntry = array[nullValueLocation];
array[nullValueLocation] = Helpers.mapEntry(oldEntry.getKey(), null);
return array;
}
/**
* @return an array of the proper size with {@code null} as the key and value of the middle
* element.
*/
protected Entry<K, V>[] createArrayWithNullKeyAndValue() {
Entry<K, V>[] array = createSamplesArray();
int nullValueLocation = getNullLocation();
array[nullValueLocation] = Helpers.mapEntry(null, null);
return array;
}
protected V getValueForNullKey() {
return getEntryNullReplaces().getValue();
}
protected K getKeyForNullValue() {
return getEntryNullReplaces().getKey();
}
private Entry<K, V> getEntryNullReplaces() {
Iterator<Entry<K, V>> entries = getSampleElements().iterator();
for (int i = 0; i < getNullLocation(); i++) {
entries.next();
}
return entries.next();
}
protected void initMultimapWithNullKey() {
resetContainer(getSubjectGenerator().create((Object[]) createArrayWithNullKey()));
}
protected void initMultimapWithNullValue() {
resetContainer(getSubjectGenerator().create((Object[]) createArrayWithNullValue()));
}
protected void initMultimapWithNullKeyAndValue() {
resetContainer(getSubjectGenerator().create((Object[]) createArrayWithNullKeyAndValue()));
}
protected SampleElements<K> sampleKeys() {
return ((TestMultimapGenerator<K, V, ? extends Multimap<K, V>>)
getSubjectGenerator().getInnerGenerator())
.sampleKeys();
}
protected SampleElements<V> sampleValues() {
return ((TestMultimapGenerator<K, V, ? extends Multimap<K, V>>)
getSubjectGenerator().getInnerGenerator())
.sampleValues();
}
@Override
protected Collection<Entry<K, V>> actualContents() {
return multimap.entries();
}
// TODO: dispose of this once collection is encapsulated.
@Override
@CanIgnoreReturnValue
protected M resetContainer(M newContents) {
multimap = super.resetContainer(newContents);
return multimap;
}
@CanIgnoreReturnValue
protected Multimap<K, V> resetContainer(Entry<K, V>... newContents) {
multimap = super.resetContainer(getSubjectGenerator().create((Object[]) newContents));
return multimap;
}
/**
* @see AbstractContainerTester#resetContainer()
*/
protected void resetCollection() {
resetContainer();
}
protected void assertGet(K key, V... values) {
assertGet(key, Arrays.asList(values));
}
protected void assertGet(K key, Collection<? extends V> values) {
assertEqualIgnoringOrder(values, multimap().get(key));
if (!values.isEmpty()) {
assertEqualIgnoringOrder(values, multimap().asMap().get(key));
assertFalse(multimap().isEmpty());
} else {
assertNull(multimap().asMap().get(key));
}
assertEquals(values.size(), multimap().get(key).size());
assertEquals(values.size() > 0, multimap().containsKey(key));
assertEquals(values.size() > 0, multimap().keySet().contains(key));
assertEquals(values.size() > 0, multimap().keys().contains(key));
}
protected final K k0() {
return e0().getKey();
}
protected final V v0() {
return e0().getValue();
}
protected final K k1() {
return e1().getKey();
}
protected final V v1() {
return e1().getValue();
}
protected final K k2() {
return e2().getKey();
}
protected final V v2() {
return e2().getValue();
}
protected final K k3() {
return e3().getKey();
}
protected final V v3() {
return e3().getValue();
}
protected final K k4() {
return e4().getKey();
}
protected final V v4() {
return e4().getValue();
}
}