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106 lines
2.2 KiB
JavaScript
106 lines
2.2 KiB
JavaScript
const tape = require('tape')
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const { Writable, Readable } = require('../')
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tape('write backpressure', function (t) {
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const ws = new Writable()
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for (let i = 0; i < 15; i++) {
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t.ok(ws.write('a'), 'not backpressured')
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t.notOk(Writable.isBackpressured(ws), 'static check')
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}
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t.notOk(ws.write('a'), 'backpressured')
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t.ok(Writable.isBackpressured(ws), 'static check')
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t.end()
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})
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tape('write backpressure with drain', function (t) {
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const ws = new Writable()
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for (let i = 0; i < 15; i++) {
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t.ok(ws.write('a'), 'not backpressured')
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t.notOk(Writable.isBackpressured(ws), 'static check')
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}
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t.notOk(ws.write('a'), 'backpressured')
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t.ok(Writable.isBackpressured(ws), 'static check')
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ws.on('drain', function () {
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t.notOk(Writable.isBackpressured(ws))
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t.end()
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})
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})
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tape('write backpressure with destroy', function (t) {
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const ws = new Writable()
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ws.write('a')
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ws.destroy()
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t.ok(Writable.isBackpressured(ws))
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t.end()
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})
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tape('write backpressure with end', function (t) {
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const ws = new Writable()
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ws.write('a')
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ws.end()
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t.ok(Writable.isBackpressured(ws))
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t.end()
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})
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tape('read backpressure', function (t) {
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const rs = new Readable()
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for (let i = 0; i < 15; i++) {
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t.ok(rs.push('a'), 'not backpressured')
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t.notOk(Readable.isBackpressured(rs), 'static check')
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}
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t.notOk(rs.push('a'), 'backpressured')
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t.ok(Readable.isBackpressured(rs), 'static check')
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t.end()
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})
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tape('read backpressure with later read', function (t) {
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const rs = new Readable()
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for (let i = 0; i < 15; i++) {
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t.ok(rs.push('a'), 'not backpressured')
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t.notOk(Readable.isBackpressured(rs), 'static check')
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}
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t.notOk(rs.push('a'), 'backpressured')
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t.ok(Readable.isBackpressured(rs), 'static check')
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rs.once('readable', function () {
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rs.read()
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t.notOk(Readable.isBackpressured(rs))
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t.end()
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})
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})
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tape('read backpressure with destroy', function (t) {
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const rs = new Readable()
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rs.push('a')
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rs.destroy()
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t.ok(Readable.isBackpressured(rs))
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t.end()
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})
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tape('read backpressure with push(null)', function (t) {
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const rs = new Readable()
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rs.push('a')
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rs.push(null)
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t.ok(Readable.isBackpressured(rs))
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t.end()
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})
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