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ncp.test.js
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ncp.test.js
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'use strict'
const fs = require('fs')
const ncp = require('../../copy')
const path = require('path')
const rimraf = require('rimraf')
const assert = require('assert')
const readDirFiles = require('read-dir-files').read // temporary, will remove
/* eslint-env mocha */
const fixturesDir = path.join(__dirname, 'fixtures')
describe('ncp', () => {
describe('regular files and directories', () => {
const fixtures = path.join(fixturesDir, 'regular-fixtures')
const src = path.join(fixtures, 'src')
const out = path.join(fixtures, 'out')
before(cb => rimraf(out, () => ncp(src, out, cb)))
describe('when copying a directory of files', () => {
it('files are copied correctly', cb => {
readDirFiles(src, 'utf8', (srcErr, srcFiles) => {
readDirFiles(out, 'utf8', (outErr, outFiles) => {
assert.ifError(srcErr)
assert.deepStrictEqual(srcFiles, outFiles)
cb()
})
})
})
})
describe('when copying files using filter', () => {
before(cb => {
const filter = name => name.slice(-1) !== 'a'
rimraf(out, () => ncp(src, out, { filter }, cb))
})
it('files are copied correctly', cb => {
readDirFiles(src, 'utf8', (srcErr, srcFiles) => {
function filter (files) {
for (const fileName in files) {
const curFile = files[fileName]
if (curFile instanceof Object) {
filter(curFile)
} else if (fileName.slice(-1) === 'a') {
delete files[fileName]
}
}
}
filter(srcFiles)
readDirFiles(out, 'utf8', (outErr, outFiles) => {
assert.ifError(outErr)
assert.deepStrictEqual(srcFiles, outFiles)
cb()
})
})
})
})
describe('when using overwrite=true', () => {
before(function () {
this.originalCreateReadStream = fs.createReadStream
})
after(function () {
fs.createReadStream = this.originalCreateReadStream
})
it('the copy is complete after callback', done => {
ncp(src, out, { overwrite: true }, err => {
fs.createReadStream = () => done(new Error('createReadStream after callback'))
assert.ifError(err)
process.nextTick(done)
})
})
})
describe('when using overwrite=false', () => {
beforeEach(done => rimraf(out, done))
it('works', cb => {
ncp(src, out, { overwrite: false }, err => {
assert.ifError(err)
cb()
})
})
it('should not error if files exist', cb => {
ncp(src, out, () => {
ncp(src, out, { overwrite: false }, err => {
assert.ifError(err)
cb()
})
})
})
it('should error if errorOnExist and file exists', cb => {
ncp(src, out, () => {
ncp(src, out, {
overwrite: false,
errorOnExist: true
}, err => {
assert(err)
cb()
})
})
})
})
describe('clobber', () => {
beforeEach(done => rimraf(out, done))
it('is an alias for overwrite', cb => {
ncp(src, out, () => {
ncp(src, out, {
clobber: false,
errorOnExist: true
}, err => {
assert(err)
cb()
})
})
})
})
describe('when using transform', () => {
it('file descriptors are passed correctly', cb => {
ncp(src, out, {
transform: (read, write, file) => {
assert.notStrictEqual(file.name, undefined)
assert.strictEqual(typeof file.mode, 'number')
read.pipe(write)
}
}, cb)
})
})
})
// see https://github.com/AvianFlu/ncp/issues/71
describe('Issue 71: Odd Async Behaviors', () => {
const fixtures = path.join(__dirname, 'fixtures', 'regular-fixtures')
const src = path.join(fixtures, 'src')
const out = path.join(fixtures, 'out')
let totalCallbacks = 0
function copyAssertAndCount (callback) {
// rimraf(out, function() {
ncp(src, out, err => {
assert(!err)
totalCallbacks += 1
readDirFiles(src, 'utf8', (srcErr, srcFiles) => {
readDirFiles(out, 'utf8', (outErr, outFiles) => {
assert.ifError(srcErr)
assert.deepStrictEqual(srcFiles, outFiles)
callback()
})
})
})
// })
}
describe('when copying a directory of files without cleaning the destination', () => {
it('callback fires once per run and directories are equal', done => {
const expected = 10
let count = 10
function next () {
if (count > 0) {
setTimeout(() => {
copyAssertAndCount(() => {
count -= 1
next()
})
}, 100)
} else {
// console.log('Total callback count is', totalCallbacks)
assert.strictEqual(totalCallbacks, expected)
done()
}
}
next()
})
})
})
})