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 static org.junit.contrib.truth.Truth.ASSERT; 18 19 import com.google.common.annotations.GwtCompatible; 20 21 import junit.framework.TestCase; 22 23 import java.util.Arrays; 24 import java.util.List; 25 import java.util.SortedSet; 26 27 /** 28 * Unit tests for {@code SortedIterables}. 29 * 30 * @author Louis Wasserman 31 */ 32 @GwtCompatible 33 public class SortedIterablesTest extends TestCase { 34 @SuppressWarnings("unchecked") 35 public void testSortedCounts() { 36 List<Integer> list = Arrays.asList(3, 9, 8, 4, 5, 2, 2, 8); 37 ASSERT.that(SortedIterables.sortedCounts(Ordering.natural(), list)) 38 .hasContentsInOrder( 39 Multisets.immutableEntry(2, 2), Multisets.immutableEntry(3, 1), 40 Multisets.immutableEntry(4, 1), Multisets.immutableEntry(5, 1), 41 Multisets.immutableEntry(8, 2), Multisets.immutableEntry(9, 1)); 42 } 43 44 @SuppressWarnings("unchecked") 45 public void testSortedCountsIterator() { 46 List<Integer> list = Arrays.asList(3, 9, 8, 4, 5, 2, 2, 8); 47 ASSERT.that(SortedIterables.sortedCounts(Ordering.natural(), list.iterator())) 48 .hasContentsInOrder( 49 Multisets.immutableEntry(2, 2), Multisets.immutableEntry(3, 1), 50 Multisets.immutableEntry(4, 1), Multisets.immutableEntry(5, 1), 51 Multisets.immutableEntry(8, 2), Multisets.immutableEntry(9, 1)); 52 } 53 54 public void testSameComparator() { 55 assertTrue(SortedIterables.hasSameComparator(Ordering.natural(), Sets.newTreeSet())); 56 // Before JDK6 (including under GWT), the TreeMap keySet is a plain Set. 57 if (Maps.newTreeMap().keySet() instanceof SortedSet) { 58 assertTrue( 59 SortedIterables.hasSameComparator(Ordering.natural(), Maps.newTreeMap().keySet())); 60 } 61 assertTrue(SortedIterables.hasSameComparator(Ordering.natural().reverse(), 62 Sets.newTreeSet(Ordering.natural().reverse()))); 63 } 64 } 65
