testfw/com/google/common/collect/testing/QueueTestSuiteBuilder.java

/*
 * Copyright (C) 2008 Google Inc.
 *
 * 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.testers.QueueElementTester;
import com.google.common.collect.testing.testers.QueueOfferTester;
import com.google.common.collect.testing.testers.QueuePeekTester;
import com.google.common.collect.testing.testers.QueuePollTester;
import com.google.common.collect.testing.testers.QueueRemoveTester;

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

/**
 * Creates, based on your criteria, a JUnit test suite that exhaustively tests
 * a queue implementation.
 *
 * @author Jared Levy
 */
public final class QueueTestSuiteBuilder<E>
    extends AbstractCollectionTestSuiteBuilder<QueueTestSuiteBuilder<E>, E> {
  public static <E> QueueTestSuiteBuilder<E> using(
      TestQueueGenerator<E> generator) {
    return new QueueTestSuiteBuilder<E>().usingGenerator(generator);
  }

  private boolean runCollectionTests = true;

  /**
   * Specify whether to skip the general collection tests. Call this method when
   * testing a collection that's both a queue and a list, to avoid running the
   * common collection tests twice. By default, collection tests do run.
   */
  public QueueTestSuiteBuilder<E> skipCollectionTests() {
    runCollectionTests = false;
    return this;
  }

  // Class parameters must be raw.
  @SuppressWarnings("unchecked")
  @Override protected List<Class<? extends AbstractTester>> getTesters() {
    List<Class<? extends AbstractTester>> testers =
        new ArrayList<Class<? extends AbstractTester>>();
    if (runCollectionTests) {
      testers.addAll(super.getTesters());
    }

    testers.add(QueueElementTester.class);
    testers.add(QueueOfferTester.class);
    testers.add(QueuePeekTester.class);
    testers.add(QueuePollTester.class);
    testers.add(QueueRemoveTester.class);
    return testers;
  }
}