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/*
* Copyright (C) 2011 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;
import static org.junit.contrib.truth.Truth.ASSERT;
import com.google.common.annotations.GwtCompatible;
import junit.framework.TestCase;
import java.util.Arrays;
import java.util.List;
import java.util.SortedSet;
/**
* Unit tests for {@code SortedIterables}.
*
* @author Louis Wasserman
*/
@GwtCompatible
public class SortedIterablesTest extends TestCase {
@SuppressWarnings("unchecked")
public void testSortedCounts() {
List<Integer> list = Arrays.asList(3, 9, 8, 4, 5, 2, 2, 8);
ASSERT.that(SortedIterables.sortedCounts(Ordering.natural(), list))
.hasContentsInOrder(
Multisets.immutableEntry(2, 2), Multisets.immutableEntry(3, 1),
Multisets.immutableEntry(4, 1), Multisets.immutableEntry(5, 1),
Multisets.immutableEntry(8, 2), Multisets.immutableEntry(9, 1));
}
@SuppressWarnings("unchecked")
public void testSortedCountsIterator() {
List<Integer> list = Arrays.asList(3, 9, 8, 4, 5, 2, 2, 8);
ASSERT.that(SortedIterables.sortedCounts(Ordering.natural(), list.iterator()))
.hasContentsInOrder(
Multisets.immutableEntry(2, 2), Multisets.immutableEntry(3, 1),
Multisets.immutableEntry(4, 1), Multisets.immutableEntry(5, 1),
Multisets.immutableEntry(8, 2), Multisets.immutableEntry(9, 1));
}
public void testSameComparator() {
assertTrue(SortedIterables.hasSameComparator(Ordering.natural(), Sets.newTreeSet()));
// Before JDK6 (including under GWT), the TreeMap keySet is a plain Set.
if (Maps.newTreeMap().keySet() instanceof SortedSet) {
assertTrue(
SortedIterables.hasSameComparator(Ordering.natural(), Maps.newTreeMap().keySet()));
}
assertTrue(SortedIterables.hasSameComparator(Ordering.natural().reverse(),
Sets.newTreeSet(Ordering.natural().reverse())));
}
}
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