1 /* 2 * Copyright (C) 2011 The Guava Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 5 * in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the License 10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 11 * or implied. See the License for the specific language governing permissions and limitations under 12 * the License. 13 */ 14 15 package com.google.common.collect; 16 17 import com.google.common.annotations.GwtCompatible; 18 19 import junit.framework.TestCase; 20 21 import java.util.SortedSet; 22 23 /** 24 * Unit tests for {@code SortedIterables}. 25 * 26 * @author Louis Wasserman 27 */ 28 @GwtCompatible 29 public class SortedIterablesTest extends TestCase { 30 public void testSameComparator() { 31 assertTrue(SortedIterables.hasSameComparator(Ordering.natural(), Sets.newTreeSet())); 32 // Before JDK6 (including under GWT), the TreeMap keySet is a plain Set. 33 if (Maps.newTreeMap().keySet() instanceof SortedSet) { 34 assertTrue( 35 SortedIterables.hasSameComparator(Ordering.natural(), Maps.newTreeMap().keySet())); 36 } 37 assertTrue(SortedIterables.hasSameComparator(Ordering.natural().reverse(), 38 Sets.newTreeSet(Ordering.natural().reverse()))); 39 } 40 41 public void testComparator() { 42 assertEquals(Ordering.natural(), SortedIterables.comparator(Sets.newTreeSet())); 43 } 44 } 45
