/*
    * Copyright (C) 2007 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.testers;
  
  import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_ADD;
  import static com.google.common.collect.testing.features.CollectionSize.ZERO;
  
  import com.google.common.annotations.GwtCompatible;
  import com.google.common.collect.testing.MinimalCollection;
  import com.google.common.collect.testing.features.CollectionFeature;
  import com.google.common.collect.testing.features.CollectionSize;
  
  /**
   * A generic JUnit test which tests {@code addAll(Collection)} operations on a
   * list. Can't be invoked directly; please see
   * {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
   *
   * @author Chris Povirk
   */
  @SuppressWarnings("unchecked") // too many "unchecked generic array creations"
  @GwtCompatible
  public class ListAddAllTester<E> extends AbstractListTester<E> {
    @CollectionFeature.Require(SUPPORTS_ADD)
    @CollectionSize.Require(absent = ZERO)
    public void testAddAll_supportedAllPresent() {
      assertTrue("addAll(allPresent) should return true",
          getList().addAll(MinimalCollection.of(samples.e0)));
      expectAdded(samples.e0);
    }
  
    @CollectionFeature.Require(absent = SUPPORTS_ADD)
    @CollectionSize.Require(absent = ZERO)
    public void testAddAll_unsupportedAllPresent() {
      try {
        getList().addAll(MinimalCollection.of(samples.e0));
        fail("addAll(allPresent) should throw");
      } catch (UnsupportedOperationException expected) {
      }
      expectUnchanged();
    }
  
    @CollectionFeature.Require(SUPPORTS_ADD)
    public void testAddAll_withDuplicates() {
      MinimalCollection<E> elementsToAdd
          = MinimalCollection.of(samples.e0, samples.e1, samples.e0, samples.e1);
      assertTrue("addAll(hasDuplicates) should return true",
          getList().addAll(elementsToAdd));
      expectAdded(samples.e0, samples.e1, samples.e0, samples.e1);
    }
  }