1/*
2 * Copyright 2018 The Android Open Source Project
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
17package androidx.work;
18
19import static org.hamcrest.CoreMatchers.is;
20import static org.hamcrest.MatcherAssert.assertThat;
21
22import org.junit.Before;
23import org.junit.Test;
24
25import java.util.Arrays;
26
27public class OverwritingInputMergerTest {
28
29    private OverwritingInputMerger mOverwritingInputMerger;
30
31    @Before
32    public void setUp() {
33        mOverwritingInputMerger = new OverwritingInputMerger();
34    }
35
36    @Test
37    public void testMerge_singleArgument() {
38        String key = "key";
39        String value = "value";
40
41        Data input = new Data.Builder().putString(key, value).build();
42        Data output = getOutputFor(input);
43
44        assertThat(output.size(), is(1));
45        assertThat(output.getString(key, null), is(value));
46    }
47
48    @Test
49    public void testMerge_multipleArguments() {
50        String key1 = "key1";
51        String value1 = "value1";
52        String value1a = "value1a";
53        String key2 = "key2";
54        String value2 = "value2";
55        String key3 = "key3";
56        String value3 = "value3";
57
58        Data input1 = new Data.Builder()
59                .putString(key1, value1)
60                .putString(key2, value2)
61                .build();
62        Data input2 = new Data.Builder()
63                .putString(key1, value1a)
64                .putString(key3, value3)
65                .build();
66
67        Data output = getOutputFor(input1, input2);
68
69        assertThat(output.size(), is(3));
70        assertThat(output.getString(key1, null), is(value1a));
71        assertThat(output.getString(key2, null), is(value2));
72        assertThat(output.getString(key3, null), is(value3));
73    }
74
75    private Data getOutputFor(Data... inputs) {
76        return mOverwritingInputMerger.merge(Arrays.asList(inputs));
77    }
78}
79