1 /* 2 * Copyright (C) 2011 The Guava Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.common.collect; 18 19 import java.util.Map; 20 import java.util.SortedMap; 21 22 import com.google.common.annotations.GwtCompatible; 23 import com.google.common.base.Function; 24 import com.google.common.base.Functions; 25 26 /** 27 * Tests for {@link Maps#transformValues(SortedMap, Function)}. 28 * 29 * @author Louis Wasserman 30 */ 31 @GwtCompatible 32 public class MapsSortedTransformValuesTest extends MapsTransformValuesTest { 33 34 @Override 35 protected SortedMap<String, String> makeEmptyMap() { 36 return Maps.transformValues(Maps.<String, String>newTreeMap(), 37 Functions.<String>identity()); 38 } 39 40 @Override 41 protected SortedMap<String, String> makePopulatedMap() { 42 SortedMap<String, Integer> underlying = Maps.newTreeMap(); 43 underlying.put("a", 1); 44 underlying.put("b", 2); 45 underlying.put("c", 3); 46 return Maps.transformValues(underlying, Functions.toStringFunction()); 47 } 48 49 public void testTransformValuesSecretlySortedMap() { 50 Map<String, String> sortedMap = Maps.newTreeMap(); 51 assertTrue(Maps.transformValues(sortedMap, Functions.<String>identity()) 52 instanceof SortedMap); 53 } 54 } 55
