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slow-close.js 1.32 KB
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animalcoder 提交于 2020-03-17 14:52 +08:00 . Vueinit
'use strict'
var fs = require('graceful-fs')
var path = require('path')
var test = require('tap').test
var rimraf = require('rimraf')
var writeStream = require('../index.js')
var target = path.resolve(__dirname, 'test-chown')
test('slow close', function (t) {
t.plan(2)
// The goal here is to simulate the "file close" step happening so slowly
// that the whole close/rename process could finish before the file is
// actually closed (and thus buffers truely flushed to the OS). In
// previous versions of this module, this would result in the module
// emitting finish & close before the file was fully written and in
// turn, could break other layers that tried to read the new file.
var realEmit = fs.WriteStream.prototype.emit
var reallyClosed = false
fs.WriteStream.prototype.emit = function (event) {
if (event !== 'close') return realEmit.apply(this, arguments)
setTimeout(function () {
reallyClosed = true
realEmit.call(this, 'close')
}.bind(this), 200)
}
var stream = writeStream(target)
stream.on('finish', function () {
t.is(reallyClosed, true, "didn't finish before target was closed")
})
stream.on('close', function () {
t.is(reallyClosed, true, "didn't close before target was closed")
})
stream.end()
})
test('cleanup', function (t) {
rimraf.sync(target)
t.end()
})
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animalcoder
Vue
Vue
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