1
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var test = require('tape')
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2
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var path = require('path')
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3
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var from = require('./')
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4
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var fs = require('fs')
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5
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6
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var tmp = path.resolve(
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7
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__dirname, 'tmp.txt'
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8
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)
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9
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10
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function fromString(string) {
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11
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return from(function(size, next) {
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if (string.length <= 0) return next(null, null)
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var chunk = string.slice(0, size)
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14
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string = string.slice(size)
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15
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next(null, chunk)
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16
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})
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}
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18
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19
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test('from2', function(t) {
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var contents = fs.readFileSync(__filename, 'utf8')
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var stream = fromString(contents)
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22
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stream
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.pipe(fs.createWriteStream(tmp))
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25
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.on('close', function() {
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t.equal(fs.readFileSync(tmp, 'utf8'), contents)
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fs.unlinkSync(tmp)
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t.end()
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29
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})
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30
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})
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31
|
|
32
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test('old mode', function(t) {
|
33
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var contents = fs.readFileSync(__filename, 'utf8')
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34
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var stream = fromString(contents)
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35
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var buffer = ''
|
36
|
|
37
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stream.on('data', function(data) {
|
38
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buffer += data
|
39
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}).on('end', function() {
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40
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t.equal(buffer, contents)
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41
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t.end()
|
42
|
})
|
43
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})
|
44
|
|
45
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test('destroy', function(t) {
|
46
|
var stream = from(function(size, next) {
|
47
|
process.nextTick(function() {
|
48
|
next(null, 'no')
|
49
|
})
|
50
|
})
|
51
|
|
52
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stream.on('data', function(data) {
|
53
|
t.ok(false)
|
54
|
}).on('close', function() {
|
55
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t.ok(true)
|
56
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t.end()
|
57
|
})
|
58
|
|
59
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stream.destroy()
|
60
|
})
|
61
|
|
62
|
test('arrays', function (t) {
|
63
|
var input = ['a', 'b', 'c']
|
64
|
var stream = from(input)
|
65
|
var output = []
|
66
|
stream.on('data', function (letter) {
|
67
|
output.push(letter.toString())
|
68
|
})
|
69
|
stream.on('end', function () {
|
70
|
t.deepEqual(input, output)
|
71
|
t.end()
|
72
|
})
|
73
|
})
|
74
|
|
75
|
test('obj arrays', function (t) {
|
76
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var input = [{foo:'a'}, {foo:'b'}, {foo:'c'}]
|
77
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var stream = from.obj(input)
|
78
|
var output = []
|
79
|
stream.on('data', function (letter) {
|
80
|
output.push(letter)
|
81
|
})
|
82
|
stream.on('end', function () {
|
83
|
t.deepEqual(input, output)
|
84
|
t.end()
|
85
|
})
|
86
|
})
|
87
|
|
88
|
|
89
|
test('arrays can emit errors', function (t) {
|
90
|
var input = ['a', 'b', new Error('ooops'), 'c']
|
91
|
var stream = from(input)
|
92
|
var output = []
|
93
|
stream.on('data', function (letter) {
|
94
|
output.push(letter.toString())
|
95
|
})
|
96
|
stream.on('error', function(e){
|
97
|
t.deepEqual(['a', 'b'], output)
|
98
|
t.equal('ooops', e.message)
|
99
|
t.end()
|
100
|
})
|
101
|
stream.on('end', function () {
|
102
|
t.fail('the stream should have errored')
|
103
|
})
|
104
|
})
|
105
|
|
106
|
test('obj arrays can emit errors', function (t) {
|
107
|
var input = [{foo:'a'}, {foo:'b'}, new Error('ooops'), {foo:'c'}]
|
108
|
var stream = from.obj(input)
|
109
|
var output = []
|
110
|
stream.on('data', function (letter) {
|
111
|
output.push(letter)
|
112
|
})
|
113
|
stream.on('error', function(e){
|
114
|
t.deepEqual([{foo:'a'}, {foo:'b'}], output)
|
115
|
t.equal('ooops', e.message)
|
116
|
t.end()
|
117
|
})
|
118
|
stream.on('end', function () {
|
119
|
t.fail('the stream should have errored')
|
120
|
})
|
121
|
})
|
122
|
|
123
|
|