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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 com.google.common.annotations.GwtCompatible;
import com.google.common.collect.BiMap;
import com.google.common.collect.testing.AbstractMapTester;
import com.google.common.collect.testing.Helpers;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map.Entry;
/**
* Skeleton for a tester of a {@code BiMap}.
*/
@GwtCompatible
public abstract class AbstractBiMapTester<K, V> extends AbstractMapTester<K, V> {
@Override
protected BiMap<K, V> getMap() {
return (BiMap<K, V>) super.getMap();
}
static <K, V> Entry<V, K> reverseEntry(Entry<K, V> entry) {
return Helpers.mapEntry(entry.getValue(), entry.getKey());
}
@Override
protected void expectContents(Collection<Entry<K, V>> expected) {
super.expectContents(expected);
List<Entry<V, K>> reversedEntries = new ArrayList<Entry<V, K>>();
for (Entry<K, V> entry : expected) {
reversedEntries.add(reverseEntry(entry));
}
Helpers.assertEqualIgnoringOrder(getMap().inverse().entrySet(), reversedEntries);
for (Entry<K, V> entry : expected) {
assertEquals("Wrong key for value " + entry.getValue(), entry.getKey(), getMap()
.inverse()
.get(entry.getValue()));
}
}
@Override
protected void expectMissing(Entry<K, V>... entries) {
super.expectMissing(entries);
for (Entry<K, V> entry : entries) {
Entry<V, K> reversed = reverseEntry(entry);
BiMap<V, K> inv = getMap().inverse();
assertFalse("Inverse should not contain entry " + reversed,
inv.entrySet().contains(entry));
assertFalse("Inverse should not contain key " + entry.getValue(),
inv.containsKey(entry.getValue()));
assertFalse("Inverse should not contain value " + entry.getKey(),
inv.containsValue(entry.getKey()));
assertNull("Inverse should not return a mapping for key " + entry.getValue(),
getMap().get(entry.getValue()));
}
}
}
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