/*
    * Copyright (C) 2012 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.google;
  
  import static com.google.common.collect.testing.Helpers.copyToList;
  import static com.google.common.collect.testing.Helpers.mapEntry;
  import static com.google.common.collect.testing.features.CollectionSize.SEVERAL;
  import static com.google.common.collect.testing.features.MapFeature.SUPPORTS_REMOVE;
  import static com.google.common.truth.Truth.assertThat;
  
  import com.google.common.annotations.GwtCompatible;
  import com.google.common.collect.ListMultimap;
  import com.google.common.collect.testing.features.CollectionSize;
  import com.google.common.collect.testing.features.MapFeature;
  
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.List;
  import java.util.Map;
  
  /**
   * Testers for {@link ListMultimap#remove(Object, Object)}.
   *
   * @author Louis Wasserman
   */
  @GwtCompatible
  public class ListMultimapRemoveTester<K, V> extends AbstractListMultimapTester<K, V> {
    @SuppressWarnings("unchecked")
    @MapFeature.Require(SUPPORTS_REMOVE)
    @CollectionSize.Require(SEVERAL)
    public void testMultimapRemoveDeletesFirstOccurrence() {
      K k = sampleKeys().e0;
      V v0 = sampleValues().e0;
      V v1 = sampleValues().e2;
      resetContainer(mapEntry(k, v0), mapEntry(k, v1), mapEntry(k, v0));
  
      List<V> list = multimap().get(k);
      multimap().remove(k, v0);
      assertThat(list).has().exactly(v1, v0).inOrder();
    }
  
    @SuppressWarnings("unchecked")
    @MapFeature.Require(SUPPORTS_REMOVE)
    @CollectionSize.Require(SEVERAL)
    public void testRemoveAtIndexFromGetPropagates() {
      K k = sampleKeys().e0;
      V v0 = sampleValues().e0;
      V v1 = sampleValues().e2;
      List<V> values = Arrays.asList(v0, v1, v0);
  
      for (int i = 0; i < 3; i++) {
        resetContainer(mapEntry(k, v0), mapEntry(k, v1), mapEntry(k, v0));
        List<V> expectedValues = copyToList(values);
  
        multimap().get(k).remove(i);
        expectedValues.remove(i);
  
        assertGet(k, expectedValues);
      }
    }
  
    @SuppressWarnings("unchecked")
    @MapFeature.Require(SUPPORTS_REMOVE)
    @CollectionSize.Require(SEVERAL)
    public void testRemoveAtIndexFromAsMapPropagates() {
      K k = sampleKeys().e0;
      V v0 = sampleValues().e0;
      V v1 = sampleValues().e2;
      List<V> values = Arrays.asList(v0, v1, v0);
  
      for (int i = 0; i < 3; i++) {
        resetContainer(mapEntry(k, v0), mapEntry(k, v1), mapEntry(k, v0));
        List<V> expectedValues = copyToList(values);
  
        List<V> asMapValue = (List<V>) multimap().asMap().get(k);
        asMapValue.remove(i);
        expectedValues.remove(i);
  
        assertGet(k, expectedValues);
      }
    }
  
    @SuppressWarnings("unchecked")
    @MapFeature.Require(SUPPORTS_REMOVE)
    @CollectionSize.Require(SEVERAL)
    public void testRemoveAtIndexFromAsMapEntrySetPropagates() {
      K k = sampleKeys().e0;
     V v0 = sampleValues().e0;
     V v1 = sampleValues().e2;
     List<V> values = Arrays.asList(v0, v1, v0);
 
     for (int i = 0; i < 3; i++) {
       resetContainer(mapEntry(k, v0), mapEntry(k, v1), mapEntry(k, v0));
       List<V> expectedValues = copyToList(values);
 
       Map.Entry<K, Collection<V>> asMapEntry = multimap().asMap().entrySet().iterator().next();
       List<V> asMapValue = (List<V>) asMapEntry.getValue();
       asMapValue.remove(i);
       expectedValues.remove(i);
 
       assertGet(k, expectedValues);
     }
   }
 }