/*
 * Copyright (C) 2010 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 com.google.common.annotations.GwtIncompatible;
import com.google.common.collect.ImmutableSortedMap;
import com.google.common.collect.Lists;
import com.google.common.collect.Ordering;
import com.google.common.collect.Sets;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import com.google.common.testing.SerializableTester;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.NavigableSet;
import java.util.Set;
import java.util.SortedSet;

public class SafeTreeSetTest extends TestCase {
  public static Test suite() {
    TestSuite suite = new TestSuite();
    suite.addTestSuite(SafeTreeSetTest.class);
    suite.addTest(
        NavigableSetTestSuiteBuilder.using(new TestStringSetGenerator() {
          @Override protected Set<String> create(String[] elements) {
            return new SafeTreeSet<String>(Arrays.asList(elements));
          }

          @Override public List<String> order(List<String> insertionOrder) {
            return Lists.newArrayList(Sets.newTreeSet(insertionOrder));
          }
        }).withFeatures(CollectionSize.ANY, CollectionFeature.KNOWN_ORDER,
            CollectionFeature.GENERAL_PURPOSE).named(
            "SafeTreeSet with natural comparator").createTestSuite());
    suite.addTest(SetTestSuiteBuilder.using(new TestStringSetGenerator() {
      @Override protected Set<String> create(String[] elements) {
        NavigableSet<String> set =
            new SafeTreeSet<String>(Ordering.natural().nullsFirst());
        set.addAll(Arrays.asList(elements));
        return set;
      }

      @Override public List<String> order(List<String> insertionOrder) {
        return Lists.newArrayList(Sets.newTreeSet(insertionOrder));
      }
    }).withFeatures(CollectionSize.ANY, CollectionFeature.KNOWN_ORDER,
        CollectionFeature.GENERAL_PURPOSE, CollectionFeature.ALLOWS_NULL_VALUES)
        .named("SafeTreeSet with null-friendly comparator").createTestSuite());
    return suite;
  }

  @GwtIncompatible("SerializableTester")
  public void testViewSerialization() {
    Map<String, Integer> map =
        ImmutableSortedMap.of("one", 1, "two", 2, "three", 3);
    SerializableTester.reserializeAndAssert(map.entrySet());
    SerializableTester.reserializeAndAssert(map.keySet());
    assertEquals(Lists.newArrayList(map.values()),
        Lists.newArrayList(SerializableTester.reserialize(map.values())));
  }

  @GwtIncompatible("SerializableTester")
  public void testEmpty_serialization() {
    SortedSet<String> set = new SafeTreeSet<String>();
    SortedSet<String> copy = SerializableTester.reserializeAndAssert(set);
    assertEquals(set.comparator(), copy.comparator());
  }

  @GwtIncompatible("SerializableTester")
  public void testSingle_serialization() {
    SortedSet<String> set = new SafeTreeSet<String>();
    set.add("e");
    SortedSet<String> copy = SerializableTester.reserializeAndAssert(set);
    assertEquals(set.comparator(), copy.comparator());
  }

  @GwtIncompatible("SerializableTester")
  public void testSeveral_serialization() {
    SortedSet<String> set = new SafeTreeSet<String>();
    set.add("a");
    set.add("b");
    set.add("c");
    SortedSet<String> copy = SerializableTester.reserializeAndAssert(set);
    assertEquals(set.comparator(), copy.comparator());
  }
}