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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 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.features.MapFeature;
import com.google.common.collect.testing.google.SetMultimapTestSuiteBuilder;
import com.google.common.collect.testing.google.TestStringSetMultimapGenerator;
import junit.framework.Test;
import junit.framework.TestSuite;
import java.util.Map.Entry;
/**
* Unit tests for {@link HashMultimap}.
*
* @author Jared Levy
*/
@GwtCompatible(emulated = true)
public class HashMultimapTest extends AbstractSetMultimapTest {
@GwtIncompatible("suite")
public static Test suite() {
TestSuite suite = new TestSuite();
suite.addTest(SetMultimapTestSuiteBuilder.using(new TestStringSetMultimapGenerator() {
@Override
protected SetMultimap<String, String> create(Entry<String, String>[] entries) {
SetMultimap<String, String> multimap = HashMultimap.create();
for (Entry<String, String> entry : entries) {
multimap.put(entry.getKey(), entry.getValue());
}
return multimap;
}
})
.named("HashMultimap")
.withFeatures(
MapFeature.ALLOWS_NULL_KEYS,
MapFeature.ALLOWS_NULL_VALUES,
MapFeature.GENERAL_PURPOSE,
MapFeature.FAILS_FAST_ON_CONCURRENT_MODIFICATION,
CollectionFeature.SERIALIZABLE,
CollectionSize.ANY)
.createTestSuite());
suite.addTestSuite(HashMultimapTest.class);
return suite;
}
@Override protected Multimap<String, Integer> create() {
return HashMultimap.create();
}
/*
* The behavior of toString() is tested by TreeMultimap, which shares a
* lot of code with HashMultimap and has deterministic iteration order.
*/
public void testCreate() {
HashMultimap<String, Integer> multimap = HashMultimap.create();
multimap.put("foo", 1);
multimap.put("bar", 2);
multimap.put("foo", 3);
assertEquals(ImmutableSet.of(1, 3), multimap.get("foo"));
assertEquals(2, multimap.expectedValuesPerKey);
}
public void testCreateFromMultimap() {
Multimap<String, Integer> multimap = createSample();
HashMultimap<String, Integer> copy = HashMultimap.create(multimap);
assertEquals(multimap, copy);
assertEquals(2, copy.expectedValuesPerKey);
}
public void testCreateFromSizes() {
HashMultimap<String, Integer> multimap = HashMultimap.create(20, 15);
multimap.put("foo", 1);
multimap.put("bar", 2);
multimap.put("foo", 3);
assertEquals(ImmutableSet.of(1, 3), multimap.get("foo"));
assertEquals(15, multimap.expectedValuesPerKey);
}
public void testCreateFromIllegalSizes() {
try {
HashMultimap.create(-20, 15);
fail();
} catch (IllegalArgumentException expected) {}
try {
HashMultimap.create(20, -15);
fail();
} catch (IllegalArgumentException expected) {}
}
public void testEmptyMultimapsEqual() {
Multimap<String, Integer> setMultimap = HashMultimap.create();
Multimap<String, Integer> listMultimap = ArrayListMultimap.create();
assertTrue(setMultimap.equals(listMultimap));
assertTrue(listMultimap.equals(setMultimap));
}
}
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