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Side by Side Diff: pkg/collection/test/canonicalized_map_test.dart

Issue 350183010: Add a CanonicalizedMap class to pkg/collection. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: code review Created 6 years, 5 months ago
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1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file.
4
5 import "package:collection/collection.dart";
6 import "package:unittest/unittest.dart";
7
8 void main() {
9 group("with an empty canonicalized map", () {
10 var map;
11 setUp(() {
12 map = new CanonicalizedMap<int, String, String>((key) => int.parse(key));
Lasse Reichstein Nielsen 2014/07/01 09:18:15 "(key) => int.parse(key)" could be just "int.parse
nweiz 2014/07/01 21:21:44 Done.
13 });
14
15 test("canonicalizes keys on set and get", () {
16 map["1"] = "value";
17 expect(map["01"], equals("value"));
18 });
19
20 test("canonicalizes keys for addAll", () {
21 map.addAll({
22 "1": "value 1",
23 "2": "value 2",
24 "3": "value 3"
25 });
26 expect(map["01"], equals("value 1"));
27 expect(map["02"], equals("value 2"));
28 expect(map["03"], equals("value 3"));
29 });
30
31 test("uses the final value for addAll collisions", () {
32 map.addAll({
33 "1": "value 1",
34 "01": "value 2",
35 "001": "value 3"
36 });
37 expect(map.length, equals(1));
38 expect(map["0001"], equals("value 3"));
39 });
40
41 test("clear clears the map", () {
42 map.addAll({
43 "1": "value 1",
44 "2": "value 2",
45 "3": "value 3"
46 });
47 expect(map, isNot(isEmpty));
48 map.clear();
49 expect(map, isEmpty);
50 });
51
52 test("canonicalizes keys for containsKey", () {
53 map["1"] = "value";
54 expect(map.containsKey("01"), isTrue);
55 expect(map.containsKey("2"), isFalse);
56 });
57
58 test("canonicalizes keys for putIfAbsent", () {
59 map["1"] = "value";
60 expect(map.putIfAbsent("01", () => throw "shouldn't run"),
61 equals("value"));
Lasse Reichstein Nielsen 2014/07/01 09:18:15 indent to '('?
nweiz 2014/07/01 21:21:44 Done.
62 expect(map.putIfAbsent("2", () => "new value"), equals("new value"));
63 });
64
65 test("canonicalizes keys for remove", () {
66 map["1"] = "value";
67 expect(map.remove("2"), isNull);
68 expect(map.remove("01"), equals("value"));
69 expect(map, isEmpty);
70 });
71
72 test("containsValue returns whether a value is in the map", () {
73 map["1"] = "value";
74 expect(map.containsValue("value"), isTrue);
75 expect(map.containsValue("not value"), isFalse);
76 });
77
78 test("isEmpty returns whether the map is empty", () {
79 expect(map.isEmpty, isTrue);
80 map["1"] = "value";
81 expect(map.isEmpty, isFalse);
82 map.remove("01");
83 expect(map.isEmpty, isTrue);
84 });
85
86 test("isNotEmpty returns whether the map isn't empty", () {
87 expect(map.isNotEmpty, isFalse);
88 map["1"] = "value";
89 expect(map.isNotEmpty, isTrue);
90 map.remove("01");
91 expect(map.isNotEmpty, isFalse);
92 });
93
94 test("length returns the number of pairs in the map", () {
95 expect(map.length, equals(0));
96 map["1"] = "value 1";
97 expect(map.length, equals(1));
98 map["01"] = "value 01";
99 expect(map.length, equals(1));
100 map["02"] = "value 02";
101 expect(map.length, equals(2));
102 });
103
104 test("uses original keys for keys", () {
105 map["001"] = "value 1";
106 map["02"] = "value 2";
107 expect(map.keys, equals(["001", "02"]));
108 });
109
110 test("uses original keys for forEach", () {
111 map["001"] = "value 1";
112 map["02"] = "value 2";
113
114 var keys = [];
115 map.forEach((key, value) => keys.add(key));
116 expect(keys, equals(["001", "02"]));
117 });
118
119 test("values returns all values in the map", () {
120 map.addAll({
121 "1": "value 1",
122 "01": "value 01",
123 "2": "value 2",
124 "03": "value 03"
125 });
126
127 expect(map.values, equals(["value 01", "value 2", "value 03"]));
128 });
129 });
130
131 group("CanonicalizedMap.from", () {
132 test("canonicalizes its keys", () {
133 var map = new CanonicalizedMap.from({
134 "1": "value 1",
135 "2": "value 2",
136 "3": "value 3"
137 }, (key) => int.parse(key));
138 expect(map["01"], equals("value 1"));
139 expect(map["02"], equals("value 2"));
140 expect(map["03"], equals("value 3"));
141 });
142
143 test("uses the final value for collisions", () {
144 var map = new CanonicalizedMap.from({
145 "1": "value 1",
146 "01": "value 2",
147 "001": "value 3"
148 }, (key) => int.parse(key));
149 expect(map.length, equals(1));
150 expect(map["0001"], equals("value 3"));
151 });
152 });
153 }
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