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
|
var async = require('../lib');
var {expect} = require('chai');
var assert = require('assert');
describe('whilst', () => {
it('whilst', (done) => {
var call_order = [];
var count = 0;
async.whilst(
(cb) => {
expect(cb).to.be.a('function');
call_order.push(['test', count]);
return cb(null, count < 5);
},
(cb) => {
call_order.push(['iteratee', count]);
count++;
cb(null, count);
},
(err, result) => {
assert(err === null, err + " passed instead of 'null'");
expect(result).to.equal(5, 'last result passed through');
expect(call_order).to.eql([
['test', 0],
['iteratee', 0], ['test', 1],
['iteratee', 1], ['test', 2],
['iteratee', 2], ['test', 3],
['iteratee', 3], ['test', 4],
['iteratee', 4], ['test', 5],
]);
expect(count).to.equal(5);
done();
}
);
});
it('whilst optional callback', (done) => {
var counter = 0;
async.whilst(
(cb) => cb(null, counter < 2),
(cb) => {
counter++;
cb();
}
);
expect(counter).to.equal(2);
done();
});
it('whilst canceling', (done) => {
var counter = 0;
async.whilst(
(cb) => cb(null, counter < 3),
(cb) => {
counter++;
cb(counter === 2 ? false : null);
},
() => { throw new Error('should not get here')}
);
setTimeout(() => {
expect(counter).to.equal(2);
done();
}, 10)
});
it('doWhilst', (done) => {
var call_order = [];
var count = 0;
async.doWhilst(
(cb) => {
call_order.push(['iteratee', count]);
count++;
cb(null, count);
},
(c, cb) => {
expect(c).to.equal(count);
call_order.push(['test', count]);
return cb(null, count < 5);
},
(err, result) => {
assert(err === null, err + " passed instead of 'null'");
expect(result).to.equal(5, 'last result passed through');
expect(call_order).to.eql([
['iteratee', 0], ['test', 1],
['iteratee', 1], ['test', 2],
['iteratee', 2], ['test', 3],
['iteratee', 3], ['test', 4],
['iteratee', 4], ['test', 5]
]);
expect(count).to.equal(5);
done();
}
);
});
it('doWhilst callback params', (done) => {
var call_order = [];
var count = 0;
async.doWhilst(
(cb) => {
call_order.push(['iteratee', count]);
count++;
cb(null, count);
},
(c, cb) => {
call_order.push(['test', c]);
return cb(null, c < 5);
},
(err, result) => {
if (err) throw err;
expect(result).to.equal(5, 'last result passed through');
expect(call_order).to.eql([
['iteratee', 0], ['test', 1],
['iteratee', 1], ['test', 2],
['iteratee', 2], ['test', 3],
['iteratee', 3], ['test', 4],
['iteratee', 4], ['test', 5]
]);
expect(count).to.equal(5);
done();
}
);
});
it('doWhilst - error', (done) => {
var error = new Error('asdas');
async.doWhilst(
(cb) => {
cb(error);
},
() => {},
(err) => {
expect(err).to.equal(error);
done();
}
);
});
it('doWhilst canceling', (done) => {
let counter = 0;
async.doWhilst(
cb => {
counter++
cb(counter === 2 ? false : null);
},
(cb) => cb(null, true),
() => { throw new Error('should not get here')}
);
setTimeout(() => {
expect(counter).to.equal(2);
done();
}, 10)
})
});
|
