/*
 * Copyright (C) 2008 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;

import static com.google.common.collect.testing.Helpers.orderEntriesByKey;

import com.google.common.annotations.GwtCompatible;

import java.util.List;
import java.util.Map.Entry;
import java.util.SortedMap;

/**
 * Implementation helper for {@link TestMapGenerator} for use with sorted maps of strings.
 *
 * <p>This class is GWT compatible.
 *
 * @author Chris Povirk
 */
@GwtCompatible
public abstract class TestStringSortedMapGenerator extends TestStringMapGenerator 
    implements TestSortedMapGenerator<String, String> {
  @Override
  public Entry<String, String> belowSamplesLesser() {
    return Helpers.mapEntry("!! a", "below view");
  }

  @Override
  public Entry<String, String> belowSamplesGreater() {
    return Helpers.mapEntry("!! b", "below view");
  }

  @Override
  public Entry<String, String> aboveSamplesLesser() {
    return Helpers.mapEntry("~~ a", "above view");
  }

  @Override
  public Entry<String, String> aboveSamplesGreater() {
    return Helpers.mapEntry("~~ b", "above view");
  }

  @Override
  public Iterable<Entry<String, String>> order(List<Entry<String, String>> insertionOrder) {
    return orderEntriesByKey(insertionOrder);
  }

  @Override
  protected abstract SortedMap<String, String> create(Entry<String, String>[] entries);
  
  @Override
  public SortedMap<String, String> create(Object... entries) {
    return (SortedMap<String, String>) super.create(entries);
  }
}