1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/**
* Copyright (C) 2014 Google Inc.
* Licensed to The Android Open Source Project.
*
* 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.android.mail.utils;
import android.test.AndroidTestCase;
import android.test.suitebuilder.annotation.SmallTest;
import com.google.android.mail.common.base.Function;
@SmallTest
public class RankedComparatorTest extends AndroidTestCase {
private static final String RANK1 = "rank1";
private static final String RANK2 = "rank2";
private static final String[] RANKS = new String[]{RANK1, RANK2};
private static final String UNKNOWN_RANK1 = "unknown_rank_1";
private static final String UNKNOWN_RANK2 = "unknown_rank_2";
private static final String NULL_RANK = null;
private RankedComparator<DummyObject, String> comparator;
@Override
protected void setUp() throws Exception {
super.setUp();
comparator =
new RankedComparator<DummyObject, String>(RANKS, DUMMY_OBJECT_TO_RANK_FUNCTION);
}
public void testSimple() {
DummyObject rank1_1 = new DummyObject(RANK1);
DummyObject rank1_2 = new DummyObject(RANK1);
DummyObject rank2 = new DummyObject(RANK2);
assertTrue("Same object should be equal to itself.",
comparator.compare(rank1_1, rank1_1) == 0);
assertTrue("Different objects with same rank should be equal.",
comparator.compare(rank1_1, rank1_2) == 0);
// Testing different ranks and with different order of the parameters
assertTrue(comparator.compare(rank1_1, rank2) < 0);
assertTrue(comparator.compare(rank2, rank1_1) > 0);
}
public void testUnknownRank() {
DummyObject knownRank = new DummyObject(RANK1);
DummyObject unknownRank1 = new DummyObject(UNKNOWN_RANK1);
DummyObject unknownRank2 = new DummyObject(UNKNOWN_RANK2);
assertTrue("Known rank should be smaller than unknown rank.",
comparator.compare(knownRank, unknownRank1) < 0);
assertTrue("Unknown rank should be larger than known rank.",
comparator.compare(unknownRank1, knownRank) > 0);
assertTrue("Two different unknown ranks should be equal.",
comparator.compare(unknownRank1, unknownRank2) == 0);
}
public void testNullRank() {
DummyObject knownRank = new DummyObject(RANK1);
DummyObject unknownRank = new DummyObject(UNKNOWN_RANK1);
DummyObject nullRank = new DummyObject(NULL_RANK);
assertTrue("Known rank should be smaller than null rank.",
comparator.compare(knownRank, nullRank) < 0);
assertTrue("null rank should be larger than known rank.",
comparator.compare(nullRank, knownRank) > 0);
assertTrue("Unknown and null rank should be equal.",
comparator.compare(unknownRank, nullRank) == 0);
}
private static final Function<DummyObject, String> DUMMY_OBJECT_TO_RANK_FUNCTION =
new Function<DummyObject, String>() {
@Override
public String apply(DummyObject dummyObject) {
return dummyObject.rank;
}
};
private class DummyObject {
private final String rank;
private DummyObject(String rank) {
this.rank = rank;
}
}
}
|
