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/*
* Copyright (C) 2010 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;
import com.google.common.collect.testing.DerivedCollectionGenerators.Bound;
import com.google.common.collect.testing.DerivedCollectionGenerators.SortedMapSubmapTestMapGenerator;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.Feature;
import com.google.common.collect.testing.testers.SortedMapNavigationTester;
import junit.framework.TestSuite;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.SortedSet;
/**
* Creates, based on your criteria, a JUnit test suite that exhaustively tests
* a SortedMap implementation.
*/
public class SortedMapTestSuiteBuilder<K, V> extends MapTestSuiteBuilder<K, V> {
public static <K, V> SortedMapTestSuiteBuilder<K, V> using(
TestSortedMapGenerator<K, V> generator) {
SortedMapTestSuiteBuilder<K, V> result = new SortedMapTestSuiteBuilder<K, V>();
result.usingGenerator(generator);
return result;
}
@Override protected List<Class<? extends AbstractTester>> getTesters() {
List<Class<? extends AbstractTester>> testers = Helpers.copyToList(super.getTesters());
testers.add(SortedMapNavigationTester.class);
return testers;
}
@Override public TestSuite createTestSuite() {
if (!getFeatures().contains(CollectionFeature.KNOWN_ORDER)) {
List<Feature<?>> features = Helpers.copyToList(getFeatures());
features.add(CollectionFeature.KNOWN_ORDER);
withFeatures(features);
}
return super.createTestSuite();
}
@Override
protected List<TestSuite> createDerivedSuites(FeatureSpecificTestSuiteBuilder<?,
? extends OneSizeTestContainerGenerator<Map<K, V>, Entry<K, V>>> parentBuilder) {
List<TestSuite> derivedSuites = super.createDerivedSuites(parentBuilder);
if (!parentBuilder.getFeatures().contains(NoRecurse.SUBMAP)) {
derivedSuites.add(createSubmapSuite(parentBuilder, Bound.NO_BOUND, Bound.EXCLUSIVE));
derivedSuites.add(createSubmapSuite(parentBuilder, Bound.INCLUSIVE, Bound.NO_BOUND));
derivedSuites.add(createSubmapSuite(parentBuilder, Bound.INCLUSIVE, Bound.EXCLUSIVE));
}
return derivedSuites;
}
@Override protected SetTestSuiteBuilder<K> createDerivedKeySetSuite(
TestSetGenerator<K> keySetGenerator) {
/*
* TODO(cpovirk): Consider requiring a SortedSet by default and requiring tests of a given
* implementation to opt out if they wish to return Set. This would encourage us to return
* keySets that implement SortedSet
*/
return (keySetGenerator.create() instanceof SortedSet)
? SortedSetTestSuiteBuilder.using(keySetGenerator)
: SetTestSuiteBuilder.using(keySetGenerator);
}
/**
* To avoid infinite recursion, test suites with these marker features won't
* have derived suites created for them.
*/
enum NoRecurse implements Feature<Void> {
SUBMAP,
DESCENDING;
@Override
public Set<Feature<? super Void>> getImpliedFeatures() {
return Collections.emptySet();
}
}
/**
* Creates a suite whose map has some elements filtered out of view.
*
* <p>Because the map may be ascending or descending, this test must derive
* the relative order of these extreme values rather than relying on their
* regular sort ordering.
*/
final TestSuite createSubmapSuite(final FeatureSpecificTestSuiteBuilder<?,
? extends OneSizeTestContainerGenerator<Map<K, V>, Entry<K, V>>>
parentBuilder, final Bound from, final Bound to) {
final TestSortedMapGenerator<K, V> delegate
= (TestSortedMapGenerator<K, V>) parentBuilder.getSubjectGenerator().getInnerGenerator();
List<Feature<?>> features = new ArrayList<Feature<?>>();
features.add(NoRecurse.SUBMAP);
features.addAll(parentBuilder.getFeatures());
return newBuilderUsing(delegate, to, from)
.named(parentBuilder.getName() + " subMap " + from + "-" + to)
.withFeatures(features)
.suppressing(parentBuilder.getSuppressedTests())
.createTestSuite();
}
/** Like using() but overrideable by NavigableMapTestSuiteBuilder. */
SortedMapTestSuiteBuilder<K, V> newBuilderUsing(
TestSortedMapGenerator<K, V> delegate, Bound to, Bound from) {
return using(new SortedMapSubmapTestMapGenerator<K, V>(delegate, to, from));
}
}
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