/*
    * 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.copyToSet;
  import static com.google.common.collect.testing.features.CollectionSize.ZERO;
  import static com.google.common.collect.testing.features.MapFeature.ALLOWS_NULL_VALUES;
  import static com.google.common.collect.testing.features.MapFeature.SUPPORTS_PUT;
  
  import com.google.common.annotations.GwtCompatible;
  import com.google.common.collect.SetMultimap;
  import com.google.common.collect.testing.features.CollectionSize;
  import com.google.common.collect.testing.features.MapFeature;
  
  import java.util.List;
  import java.util.Map.Entry;
  import java.util.Set;
  
  /**
   * Tests for {@link SetMultimap#replaceValues}.
   *
   * @author Louis Wasserman
   */
  @GwtCompatible
  public class SetMultimapPutTester<K, V>
      extends AbstractMultimapTester<K, V, SetMultimap<K, V>> {
    // Tests for non-duplicate values are in MultimapPutTester
  
    @MapFeature.Require(SUPPORTS_PUT)
    @CollectionSize.Require(absent = ZERO)
    public void testPutDuplicateValuePreservesSize() {
      assertFalse(multimap().put(sampleKeys().e0, sampleValues().e0));
      assertEquals(getNumElements(), multimap().size());
    }
  
    @MapFeature.Require(SUPPORTS_PUT)
    public void testPutDuplicateValue() {
      List<Entry<K, V>> entries = copyToList(multimap().entries());
  
      for (Entry<K, V> entry : entries) {
        resetContainer();
        K k = entry.getKey();
        V v = entry.getValue();
  
        Set<V> values = multimap().get(k);
        Set<V> expectedValues = copyToSet(values);
  
        assertFalse(multimap().put(k, v));
        assertEquals(expectedValues, values);
        assertGet(k, expectedValues);
      }
    }
  
    @MapFeature.Require({SUPPORTS_PUT, ALLOWS_NULL_VALUES})
    @CollectionSize.Require(absent = ZERO)
    public void testPutDuplicateValue_null() {
      initMultimapWithNullValue();
      assertFalse(multimap().put(getKeyForNullValue(), null));
      expectContents(createArrayWithNullValue());
    }
  }