You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
71 lines
1.5 KiB
71 lines
1.5 KiB
var test = require('tape')
|
|
var through = require('../')
|
|
|
|
// must emit end before close.
|
|
|
|
test('buffering', function(assert) {
|
|
var ts = through(function (data) {
|
|
this.queue(data)
|
|
}, function () {
|
|
this.queue(null)
|
|
})
|
|
|
|
var ended = false, actual = []
|
|
|
|
ts.on('data', actual.push.bind(actual))
|
|
ts.on('end', function () {
|
|
ended = true
|
|
})
|
|
|
|
ts.write(1)
|
|
ts.write(2)
|
|
ts.write(3)
|
|
assert.deepEqual(actual, [1, 2, 3])
|
|
ts.pause()
|
|
ts.write(4)
|
|
ts.write(5)
|
|
ts.write(6)
|
|
assert.deepEqual(actual, [1, 2, 3])
|
|
ts.resume()
|
|
assert.deepEqual(actual, [1, 2, 3, 4, 5, 6])
|
|
ts.pause()
|
|
ts.end()
|
|
assert.ok(!ended)
|
|
ts.resume()
|
|
assert.ok(ended)
|
|
assert.end()
|
|
})
|
|
|
|
test('buffering has data in queue, when ends', function (assert) {
|
|
|
|
/*
|
|
* If stream ends while paused with data in the queue,
|
|
* stream should still emit end after all data is written
|
|
* on resume.
|
|
*/
|
|
|
|
var ts = through(function (data) {
|
|
this.queue(data)
|
|
}, function () {
|
|
this.queue(null)
|
|
})
|
|
|
|
var ended = false, actual = []
|
|
|
|
ts.on('data', actual.push.bind(actual))
|
|
ts.on('end', function () {
|
|
ended = true
|
|
})
|
|
|
|
ts.pause()
|
|
ts.write(1)
|
|
ts.write(2)
|
|
ts.write(3)
|
|
ts.end()
|
|
assert.deepEqual(actual, [], 'no data written yet, still paused')
|
|
assert.ok(!ended, 'end not emitted yet, still paused')
|
|
ts.resume()
|
|
assert.deepEqual(actual, [1, 2, 3], 'resumed, all data should be delivered')
|
|
assert.ok(ended, 'end should be emitted once all data was delivered')
|
|
assert.end();
|
|
})
|
|
|