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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.collect.BiMap;
import com.google.common.collect.testing.AbstractTester;
import com.google.common.collect.testing.FeatureSpecificTestSuiteBuilder;
import com.google.common.collect.testing.MapTestSuiteBuilder;
import com.google.common.collect.testing.OneSizeTestContainerGenerator;
import com.google.common.collect.testing.PerCollectionSizeTestSuiteBuilder;
import com.google.common.collect.testing.SetTestSuiteBuilder;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.Feature;
import com.google.common.collect.testing.features.MapFeature;
import com.google.common.collect.testing.google.DerivedGoogleCollectionGenerators.BiMapValueSetGenerator;
import com.google.common.collect.testing.google.DerivedGoogleCollectionGenerators.InverseBiMapGenerator;
import com.google.common.collect.testing.google.DerivedGoogleCollectionGenerators.MapGenerator;
import com.google.common.collect.testing.testers.SetCreationTester;
import junit.framework.TestSuite;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
/**
* Creates, based on your criteria, a JUnit test suite that exhaustively tests a {@code BiMap}
* implementation.
*
* @author Louis Wasserman
*/
public class BiMapTestSuiteBuilder<K, V>
extends PerCollectionSizeTestSuiteBuilder<BiMapTestSuiteBuilder<K, V>,
TestBiMapGenerator<K, V>, BiMap<K, V>, Map.Entry<K, V>> {
public static <K, V> BiMapTestSuiteBuilder<K, V> using(TestBiMapGenerator<K, V> generator) {
return new BiMapTestSuiteBuilder<K, V>().usingGenerator(generator);
}
@Override
protected List<Class<? extends AbstractTester>> getTesters() {
List<Class<? extends AbstractTester>> testers =
new ArrayList<Class<? extends AbstractTester>>();
testers.add(BiMapPutTester.class);
testers.add(BiMapInverseTester.class);
testers.add(BiMapRemoveTester.class);
testers.add(BiMapClearTester.class);
return testers;
}
enum NoRecurse implements Feature<Void> {
INVERSE;
@Override
public Set<Feature<? super Void>> getImpliedFeatures() {
return Collections.emptySet();
}
}
@Override
protected
List<TestSuite>
createDerivedSuites(
FeatureSpecificTestSuiteBuilder<?,
? extends OneSizeTestContainerGenerator<BiMap<K, V>, Entry<K, V>>> parentBuilder) {
List<TestSuite> derived = super.createDerivedSuites(parentBuilder);
// TODO(cpovirk): consider using this approach (derived suites instead of extension) in
// ListTestSuiteBuilder, etc.?
derived.add(MapTestSuiteBuilder
.using(new MapGenerator<K, V>(parentBuilder.getSubjectGenerator()))
.withFeatures(parentBuilder.getFeatures())
.named(parentBuilder.getName() + " [Map]")
.suppressing(parentBuilder.getSuppressedTests())
.suppressing(SetCreationTester.class.getMethods())
// BiMap.entrySet() duplicate-handling behavior is too confusing for SetCreationTester
.createTestSuite());
/*
* TODO(cpovirk): the Map tests duplicate most of this effort by using a
* CollectionTestSuiteBuilder on values(). It would be nice to avoid that
*/
derived.add(SetTestSuiteBuilder
.using(new BiMapValueSetGenerator<K, V>(parentBuilder.getSubjectGenerator()))
.withFeatures(computeValuesSetFeatures(parentBuilder.getFeatures()))
.named(parentBuilder.getName() + " values [Set]")
.suppressing(parentBuilder.getSuppressedTests())
.suppressing(SetCreationTester.class.getMethods())
// BiMap.values() duplicate-handling behavior is too confusing for SetCreationTester
.createTestSuite());
if (!parentBuilder.getFeatures().contains(NoRecurse.INVERSE)) {
derived.add(BiMapTestSuiteBuilder
.using(new InverseBiMapGenerator<K, V>(parentBuilder.getSubjectGenerator()))
.withFeatures(computeInverseFeatures(parentBuilder.getFeatures()))
.named(parentBuilder.getName() + " inverse")
.suppressing(parentBuilder.getSuppressedTests())
.createTestSuite());
}
return derived;
}
private static Set<Feature<?>> computeInverseFeatures(Set<Feature<?>> mapFeatures) {
Set<Feature<?>> inverseFeatures = new HashSet<Feature<?>>(mapFeatures);
boolean nullKeys = inverseFeatures.remove(MapFeature.ALLOWS_NULL_KEYS);
boolean nullValues = inverseFeatures.remove(MapFeature.ALLOWS_NULL_VALUES);
if (nullKeys) {
inverseFeatures.add(MapFeature.ALLOWS_NULL_VALUES);
}
if (nullValues) {
inverseFeatures.add(MapFeature.ALLOWS_NULL_KEYS);
}
inverseFeatures.add(NoRecurse.INVERSE);
inverseFeatures.remove(CollectionFeature.KNOWN_ORDER);
inverseFeatures.add(MapFeature.REJECTS_DUPLICATES_AT_CREATION);
return inverseFeatures;
}
// TODO(user): can we eliminate the duplication from MapTestSuiteBuilder here?
private static Set<Feature<?>> computeValuesSetFeatures(
Set<Feature<?>> mapFeatures) {
Set<Feature<?>> valuesCollectionFeatures =
computeCommonDerivedCollectionFeatures(mapFeatures);
valuesCollectionFeatures.add(CollectionFeature.ALLOWS_NULL_QUERIES);
if (mapFeatures.contains(MapFeature.ALLOWS_NULL_VALUES)) {
valuesCollectionFeatures.add(CollectionFeature.ALLOWS_NULL_VALUES);
}
valuesCollectionFeatures.add(CollectionFeature.REJECTS_DUPLICATES_AT_CREATION);
return valuesCollectionFeatures;
}
private static Set<Feature<?>> computeCommonDerivedCollectionFeatures(
Set<Feature<?>> mapFeatures) {
return MapTestSuiteBuilder.computeCommonDerivedCollectionFeatures(mapFeatures);
}
}
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