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1 /*
2  * Copyright (C) 2008 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 com.google.common.annotations.GwtCompatible;
20 import com.google.common.base.Function;
21 import com.google.common.base.Functions;
22 import java.util.Map;
23 
24 /**
25  * Tests for {@link Maps#transformValues(Map, Function)}.
26  *
27  * @author Isaac Shum
28  */
29 @GwtCompatible
30 @ElementTypesAreNonnullByDefault
31 public class MapsTransformValuesTest extends AbstractMapsTransformValuesTest {
32   @Override
makeEmptyMap()33   protected Map<String, String> makeEmptyMap() {
34     return Maps.transformValues(Maps.<String, String>newHashMap(), Functions.<String>identity());
35   }
36 
37   @Override
makePopulatedMap()38   protected Map<String, String> makePopulatedMap() {
39     Map<String, Integer> underlying = Maps.newHashMap();
40     underlying.put("a", 1);
41     underlying.put("b", 2);
42     underlying.put("c", 3);
43     return Maps.transformValues(underlying, Functions.toStringFunction());
44   }
45 }
46