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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;
import static java.util.Arrays.asList;
import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import com.google.common.collect.testing.google.MultisetFeature;
import com.google.common.collect.testing.google.MultisetTestSuiteBuilder;
import com.google.common.collect.testing.google.TestStringMultisetGenerator;
import com.google.common.testing.SerializableTester;
import java.io.Serializable;
import java.util.Arrays;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
/**
* Unit test for {@link HashMultiset}.
*
* @author Kevin Bourrillion
* @author Jared Levy
*/
@GwtCompatible(emulated = true)
public class HashMultisetTest extends TestCase {
@GwtIncompatible // suite
public static Test suite() {
TestSuite suite = new TestSuite();
suite.addTest(
MultisetTestSuiteBuilder.using(hashMultisetGenerator())
.withFeatures(
CollectionSize.ANY,
CollectionFeature.FAILS_FAST_ON_CONCURRENT_MODIFICATION,
CollectionFeature.ALLOWS_NULL_VALUES,
CollectionFeature.SERIALIZABLE,
CollectionFeature.GENERAL_PURPOSE,
MultisetFeature.ENTRIES_ARE_VIEWS)
.named("HashMultiset")
.createTestSuite());
suite.addTestSuite(HashMultisetTest.class);
return suite;
}
private static TestStringMultisetGenerator hashMultisetGenerator() {
return new TestStringMultisetGenerator() {
@Override
protected Multiset<String> create(String[] elements) {
return HashMultiset.create(asList(elements));
}
};
}
public void testCreate() {
Multiset<String> multiset = HashMultiset.create();
multiset.add("foo", 2);
multiset.add("bar");
assertEquals(3, multiset.size());
assertEquals(2, multiset.count("foo"));
}
public void testCreateWithSize() {
Multiset<String> multiset = HashMultiset.create(50);
multiset.add("foo", 2);
multiset.add("bar");
assertEquals(3, multiset.size());
assertEquals(2, multiset.count("foo"));
}
public void testCreateFromIterable() {
Multiset<String> multiset = HashMultiset.create(Arrays.asList("foo", "bar", "foo"));
assertEquals(3, multiset.size());
assertEquals(2, multiset.count("foo"));
}
@GwtIncompatible // SerializableTester
public void testSerializationContainingSelf() {
Multiset<Multiset<?>> multiset = HashMultiset.create();
multiset.add(multiset, 2);
Multiset<Multiset<?>> copy = SerializableTester.reserialize(multiset);
assertEquals(2, copy.size());
assertSame(copy, copy.iterator().next());
}
@GwtIncompatible // Only used by @GwtIncompatible code
private static class MultisetHolder implements Serializable {
public Multiset<?> member;
MultisetHolder(Multiset<?> multiset) {
this.member = multiset;
}
private static final long serialVersionUID = 1L;
}
@GwtIncompatible // SerializableTester
public void testSerializationIndirectSelfReference() {
Multiset<MultisetHolder> multiset = HashMultiset.create();
MultisetHolder holder = new MultisetHolder(multiset);
multiset.add(holder, 2);
Multiset<MultisetHolder> copy = SerializableTester.reserialize(multiset);
assertEquals(2, copy.size());
assertSame(copy, copy.iterator().next().member);
}
/*
* The behavior of toString() and iteration is tested by LinkedHashMultiset,
* which shares a lot of code with HashMultiset and has deterministic
* iteration order.
*/
}
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