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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
'use strict';
describe('injector', function() {
var providers;
var injector;
beforeEach(function() {
providers = extensionMap({}, 'providers');
injector = createInjector(providers);
});
it("should return same instance from calling provider", function() {
var instance = {},
original = instance;
providers('instance', function() { return instance; });
expect(injector('instance')).toEqual(instance);
instance = 'deleted';
expect(injector('instance')).toEqual(original);
});
it('should inject providers', function() {
providers('a', function() {return 'Mi';});
providers('b', function(mi){return mi+'sko';}, {$inject:['a']});
expect(injector('b')).toEqual('Misko');
});
it('should resolve dependency graph and instantiate all services just once', function() {
var log = [];
// s1
// / |\
// / s2\
// / / | \\
// /s3 < s4 > s5
// //
// s6
providers('s1', function() { log.push('s1'); }, {$inject: ['s2', 's5', 's6']});
providers('s2', function() { log.push('s2'); }, {$inject: ['s3', 's4', 's5']});
providers('s3', function() { log.push('s3'); }, {$inject: ['s6']});
providers('s4', function() { log.push('s4'); }, {$inject: ['s3', 's5']});
providers('s5', function() { log.push('s5'); });
providers('s6', function() { log.push('s6'); });
injector('s1');
expect(log).toEqual(['s6', 's5', 's3', 's4', 's2', 's1']);
});
it('should provide useful message if no provider', function() {
expect(function() {
injector('idontexist');
}).toThrow("Unknown provider for 'idontexist'.");
});
it('should proved path to the missing provider', function(){
expect(function() {
injector('idontexist', ['a', 'b']);
}).toThrow("Unknown provider for 'idontexist' <- 'a' <- 'b'.");
});
it('should autostart eager services', function() {
var log = '';
providers('eager', function() {log += 'eager;'; return 'foo';}, {$eager: true});
injector = createInjector(providers);
expect(log).toEqual('eager;');
expect(injector('eager')).toBe('foo');
});
describe('invoke', function(){
var args;
beforeEach(function(){
args = null;
providers('a', function() {return 1;});
providers('b', function() {return 2;});
});
function fn(a, b, c, d) {
args = [this, a, b, c, d];
}
it('should call function', function() {
fn.$inject = ['a', 'b'];
injector.invoke({name:"this"}, fn, [3, 4]);
expect(args).toEqual([{name:'this'}, 1, 2, 3, 4]);
});
it('should treat array as annotations', function(){
injector.invoke({name:"this"}, ['a', 'b', fn], [3, 4]);
expect(args).toEqual([{name:'this'}, 1, 2, 3, 4]);
});
it('should fail with errors if not function or array', function(){
expect(function(){
injector.invoke({}, {});
}).toThrow("Argument 'fn' is not a function, got Object");
expect(function(){
injector.invoke({}, ['a', 123]);
}).toThrow("Argument 'fn' is not a function, got number");
});
});
describe('annotation', function() {
it('should return $inject', function() {
function fn() {}
fn.$inject = ['a'];
expect(inferInjectionArgs(fn)).toBe(fn.$inject);
expect(inferInjectionArgs(function() {})).toEqual([]);
expect(inferInjectionArgs(function () {})).toEqual([]);
expect(inferInjectionArgs(function () {})).toEqual([]);
expect(inferInjectionArgs(function /* */ () {})).toEqual([]);
});
it('should create $inject', function() {
// keep the multi-line to make sure we can handle it
function $f_n0 /*
*/(
$a, // x, <-- looks like an arg but it is a comment
b_, /* z, <-- looks like an arg but it is a
multi-line comment
function (a, b){}
*/
_c,
/* {some type} */ d){ extraParans();}
expect(inferInjectionArgs($f_n0)).toEqual(['$a', 'b_', '_c', 'd']);
expect($f_n0.$inject).toEqual(['$a', 'b_', '_c', 'd']);
});
it('should handle no arg functions', function() {
function $f_n0() {}
expect(inferInjectionArgs($f_n0)).toEqual([]);
expect($f_n0.$inject).toEqual([]);
});
it('should handle args with both $ and _', function() {
function $f_n0($a_){}
expect(inferInjectionArgs($f_n0)).toEqual(['$a_']);
expect($f_n0.$inject).toEqual(['$a_']);
});
it('should throw on non function arg', function() {
expect(function() {
inferInjectionArgs({});
}).toThrow();
});
it('should infer injection on services', function() {
var $injector = createInjector({
a: function() { return 'a';},
b: function(a){ return a + 'b';}
});
expect($injector('b')).toEqual('ab');
});
});
describe('inject', function() {
it('should inject names', function() {
expect(annotate('a', {}).$inject).toEqual(['a']);
expect(annotate('a', 'b', {}).$inject).toEqual(['a', 'b']);
});
it('should inject array', function() {
expect(annotate(['a'], {}).$inject).toEqual(['a']);
expect(annotate(['a', 'b'], {}).$inject).toEqual(['a', 'b']);
});
});
});
|
