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71 lines
1.5 KiB
71 lines
1.5 KiB
var test = require('tape') |
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var through = require('../') |
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// must emit end before close. |
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test('buffering', function(assert) { |
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var ts = through(function (data) { |
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this.queue(data) |
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}, function () { |
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this.queue(null) |
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}) |
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var ended = false, actual = [] |
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ts.on('data', actual.push.bind(actual)) |
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ts.on('end', function () { |
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ended = true |
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}) |
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ts.write(1) |
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ts.write(2) |
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ts.write(3) |
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assert.deepEqual(actual, [1, 2, 3]) |
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ts.pause() |
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ts.write(4) |
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ts.write(5) |
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ts.write(6) |
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assert.deepEqual(actual, [1, 2, 3]) |
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ts.resume() |
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assert.deepEqual(actual, [1, 2, 3, 4, 5, 6]) |
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ts.pause() |
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ts.end() |
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assert.ok(!ended) |
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ts.resume() |
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assert.ok(ended) |
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assert.end() |
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}) |
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test('buffering has data in queue, when ends', function (assert) { |
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/* |
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* If stream ends while paused with data in the queue, |
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* stream should still emit end after all data is written |
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* on resume. |
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*/ |
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var ts = through(function (data) { |
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this.queue(data) |
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}, function () { |
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this.queue(null) |
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}) |
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var ended = false, actual = [] |
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ts.on('data', actual.push.bind(actual)) |
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ts.on('end', function () { |
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ended = true |
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}) |
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ts.pause() |
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ts.write(1) |
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ts.write(2) |
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ts.write(3) |
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ts.end() |
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assert.deepEqual(actual, [], 'no data written yet, still paused') |
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assert.ok(!ended, 'end not emitted yet, still paused') |
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ts.resume() |
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assert.deepEqual(actual, [1, 2, 3], 'resumed, all data should be delivered') |
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assert.ok(ended, 'end should be emitted once all data was delivered') |
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assert.end(); |
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})
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