001/*
002 * Copyright (C) 2012 The Guava Authors
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package com.google.common.collect.testing.google;
017
018import com.google.common.annotations.GwtCompatible;
019import com.google.common.collect.SetMultimap;
020import com.google.common.collect.testing.Helpers;
021import com.google.common.collect.testing.SampleElements;
022import java.util.Collection;
023import java.util.List;
024import java.util.Map.Entry;
025
026/**
027 * A skeleton generator for a {@code SetMultimap} implementation.
028 *
029 * @author Louis Wasserman
030 */
031@GwtCompatible
032@ElementTypesAreNonnullByDefault
033public abstract class TestStringSetMultimapGenerator
034    implements TestSetMultimapGenerator<String, String> {
035
036  @Override
037  public SampleElements<Entry<String, String>> samples() {
038    return new SampleElements<>(
039        Helpers.mapEntry("one", "January"),
040        Helpers.mapEntry("two", "February"),
041        Helpers.mapEntry("three", "March"),
042        Helpers.mapEntry("four", "April"),
043        Helpers.mapEntry("five", "May"));
044  }
045
046  @Override
047  public SampleElements<String> sampleKeys() {
048    return new SampleElements<>("one", "two", "three", "four", "five");
049  }
050
051  @Override
052  public SampleElements<String> sampleValues() {
053    return new SampleElements<>("January", "February", "March", "April", "May");
054  }
055
056  @Override
057  public Collection<String> createCollection(Iterable<? extends String> values) {
058    return Helpers.copyToSet(values);
059  }
060
061  @Override
062  public final SetMultimap<String, String> create(Object... entries) {
063    @SuppressWarnings("unchecked")
064    Entry<String, String>[] array = (Entry<String, String>[]) new Entry<?, ?>[entries.length];
065    int i = 0;
066    for (Object o : entries) {
067      @SuppressWarnings("unchecked")
068      Entry<String, String> e = (Entry<String, String>) o;
069      array[i++] = e;
070    }
071    return create(array);
072  }
073
074  protected abstract SetMultimap<String, String> create(Entry<String, String>[] entries);
075
076  @Override
077  @SuppressWarnings("unchecked")
078  public final Entry<String, String>[] createArray(int length) {
079    return (Entry<String, String>[]) new Entry<?, ?>[length];
080  }
081
082  @Override
083  public final String[] createKeyArray(int length) {
084    return new String[length];
085  }
086
087  @Override
088  public final String[] createValueArray(int length) {
089    return new String[length];
090  }
091
092  /** Returns the original element list, unchanged. */
093  @Override
094  public Iterable<Entry<String, String>> order(List<Entry<String, String>> insertionOrder) {
095    return insertionOrder;
096  }
097}