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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.annotations.GwtIncompatible;
import com.google.common.collect.testing.DerivedCollectionGenerators.Bound;
import com.google.common.collect.testing.DerivedCollectionGenerators.SortedSetSubsetTestSetGenerator;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.Feature;
import com.google.common.collect.testing.testers.SortedSetNavigationTester;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import junit.framework.TestSuite;
/**
* Creates, based on your criteria, a JUnit test suite that exhaustively tests a SortedSet
* implementation.
*/
@GwtIncompatible
public class SortedSetTestSuiteBuilder<E> extends SetTestSuiteBuilder<E> {
public static <E> SortedSetTestSuiteBuilder<E> using(TestSortedSetGenerator<E> generator) {
SortedSetTestSuiteBuilder<E> builder = new SortedSetTestSuiteBuilder<E>();
builder.usingGenerator(generator);
return builder;
}
@Override
protected List<Class<? extends AbstractTester>> getTesters() {
List<Class<? extends AbstractTester>> testers = Helpers.copyToList(super.getTesters());
testers.add(SortedSetNavigationTester.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<Collection<E>, E>>
parentBuilder) {
List<TestSuite> derivedSuites = super.createDerivedSuites(parentBuilder);
if (!parentBuilder.getFeatures().contains(CollectionFeature.SUBSET_VIEW)) {
derivedSuites.add(createSubsetSuite(parentBuilder, Bound.NO_BOUND, Bound.EXCLUSIVE));
derivedSuites.add(createSubsetSuite(parentBuilder, Bound.INCLUSIVE, Bound.NO_BOUND));
derivedSuites.add(createSubsetSuite(parentBuilder, Bound.INCLUSIVE, Bound.EXCLUSIVE));
}
return derivedSuites;
}
/**
* Creates a suite whose set has some elements filtered out of view.
*
* <p>Because the set 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 createSubsetSuite(
final FeatureSpecificTestSuiteBuilder<
?, ? extends OneSizeTestContainerGenerator<Collection<E>, E>>
parentBuilder,
final Bound from,
final Bound to) {
final TestSortedSetGenerator<E> delegate =
(TestSortedSetGenerator<E>) parentBuilder.getSubjectGenerator().getInnerGenerator();
List<Feature<?>> features = new ArrayList<>();
features.addAll(parentBuilder.getFeatures());
features.remove(CollectionFeature.ALLOWS_NULL_VALUES);
features.add(CollectionFeature.SUBSET_VIEW);
return newBuilderUsing(delegate, to, from)
.named(parentBuilder.getName() + " subSet " + from + "-" + to)
.withFeatures(features)
.suppressing(parentBuilder.getSuppressedTests())
.createTestSuite();
}
/** Like using() but overrideable by NavigableSetTestSuiteBuilder. */
SortedSetTestSuiteBuilder<E> newBuilderUsing(
TestSortedSetGenerator<E> delegate, Bound to, Bound from) {
return using(new SortedSetSubsetTestSetGenerator<E>(delegate, to, from));
}
}
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