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Java example source code file (SortedSetTestSuiteBuilder.java)

This example Java source code file (SortedSetTestSuiteBuilder.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

abstracttester, arraylist, bound, featurespecifictestsuitebuilder, gwtincompatible, list, onesizetestcontainergenerator, override, sortedsetsubsettestsetgenerator, sortedsettestsuitebuilder, testsortedsetgenerator, util

The SortedSetTestSuiteBuilder.java Java example source code

/*
 * 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 junit.framework.TestSuite;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

/**
 * Creates, based on your criteria, a JUnit test suite that exhaustively tests
 * a SortedSet implementation.
 */
@GwtIncompatible
public class SortedSetTestSuiteBuilder<E> extends SetTestSuiteBuilder {
  public static <E> SortedSetTestSuiteBuilder using(TestSortedSetGenerator generator) {
    SortedSetTestSuiteBuilder<E> builder = new SortedSetTestSuiteBuilder();
    builder.usingGenerator(generator);
    return builder;
  }

  @Override
  protected List<Class getTesters() {
    List<Class 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>
          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>
          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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