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preprocessor.spec.js
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preprocessor.spec.js
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import mocks from 'mocks'
import di from 'di'
describe('preprocessor', () => {
var pp
var m
var mockFs
beforeEach(() => {
mockFs = mocks.fs.create({
some: {
'a.js': mocks.fs.file(0, 'content'),
'b.js': mocks.fs.file(0, 'content'),
'a.txt': mocks.fs.file(0, 'some-text'),
'photo.png': mocks.fs.file(0, 'binary'),
'CAM_PHOTO.JPG': mocks.fs.file(0, 'binary'),
'.dir': {
'a.js': mocks.fs.file(0, 'content')
}
}
})
var mocks_ = {
'graceful-fs': mockFs,
minimatch: require('minimatch')
}
m = mocks.loadFile(__dirname + '/../../lib/preprocessor.js', mocks_)
})
it('should preprocess matching file', done => {
var fakePreprocessor = sinon.spy((content, file, done) => {
file.path = file.path + '-preprocessed'
done(null, 'new-content')
})
var injector = new di.Injector([{'preprocessor:fake': ['factory', () => fakePreprocessor]}])
pp = m.createPreprocessor({'**/*.js': ['fake']}, null, injector)
var file = {originalPath: '/some/a.js', path: 'path'}
pp(file, () => {
expect(fakePreprocessor).to.have.been.called
expect(file.path).to.equal('path-preprocessed')
expect(file.content).to.equal('new-content')
done()
})
})
it('should match directories starting with a dot', done => {
var fakePreprocessor = sinon.spy((content, file, done) => {
file.path = file.path + '-preprocessed'
done(null, 'new-content')
})
var injector = new di.Injector([{'preprocessor:fake': ['factory', () => fakePreprocessor]}])
pp = m.createPreprocessor({'**/*.js': ['fake']}, null, injector)
var file = {originalPath: '/some/.dir/a.js', path: 'path'}
pp(file, () => {
expect(fakePreprocessor).to.have.been.called
expect(file.path).to.equal('path-preprocessed')
expect(file.content).to.equal('new-content')
done()
})
})
it('should check patterns after creation when invoked', done => {
var fakePreprocessor = sinon.spy((content, file, done) => {
file.path = file.path + '-preprocessed'
done(null, 'new-content')
})
var injector = new di.Injector([{'preprocessor:fake': ['factory', () => fakePreprocessor]}])
var config = {'**/*.txt': ['fake']}
pp = m.createPreprocessor(config, null, injector)
var file = {originalPath: '/some/a.js', path: 'path'}
config['**/*.js'] = ['fake']
pp(file, () => {
expect(fakePreprocessor).to.have.been.called
expect(file.path).to.equal('path-preprocessed')
expect(file.content).to.equal('new-content')
done()
})
})
it('should ignore not matching file', done => {
var fakePreprocessor = sinon.spy((content, file, done) => {
done(null, '')
})
var injector = new di.Injector([{'preprocessor:fake': ['factory', () => fakePreprocessor]}])
pp = m.createPreprocessor({'**/*.js': ['fake']}, null, injector)
var file = {originalPath: '/some/a.txt', path: 'path'}
pp(file, () => {
expect(fakePreprocessor).to.not.have.been.called
done()
})
})
it('should apply all preprocessors', done => {
var fakePreprocessor1 = sinon.spy((content, file, done) => {
file.path = file.path + '-p1'
done(null, content + '-c1')
})
var fakePreprocessor2 = sinon.spy((content, file, done) => {
file.path = file.path + '-p2'
done(content + '-c2')
})
var injector = new di.Injector([{
'preprocessor:fake1': ['factory', () => fakePreprocessor1],
'preprocessor:fake2': ['factory', () => fakePreprocessor2]
}])
pp = m.createPreprocessor({'**/*.js': ['fake1', 'fake2']}, null, injector)
var file = {originalPath: '/some/a.js', path: 'path'}
pp(file, () => {
expect(fakePreprocessor1).to.have.been.calledOnce
expect(fakePreprocessor2).to.have.been.calledOnce
expect(file.path).to.equal('path-p1-p2')
expect(file.content).to.equal('content-c1-c2')
done()
})
})
it('should compute SHA', done => {
pp = m.createPreprocessor({}, null, new di.Injector([]))
var file = {originalPath: '/some/a.js', path: 'path'}
pp(file, () => {
expect(file.sha).to.exist
expect(file.sha.length).to.equal(40)
var previousSHA = file.sha
pp(file, () => {
expect(file.sha).to.equal(previousSHA)
mockFs._touchFile('/some/a.js', null, 'new-content')
pp(file, () => {
expect(file.sha.length).to.equal(40)
expect(file.sha).not.to.equal(previousSHA)
done()
})
})
})
})
it('should compute SHA from content returned by a processor', done => {
var fakePreprocessor = sinon.spy((content, file, done) => {
done(null, content + '-processed')
})
var injector = new di.Injector([{
'preprocessor:fake': ['factory', () => fakePreprocessor]
}])
pp = m.createPreprocessor({'**/a.js': ['fake']}, null, injector)
var fileProcess = {originalPath: '/some/a.js', path: 'path'}
var fileSkip = {originalPath: '/some/b.js', path: 'path'}
pp(fileProcess, () => {
pp(fileSkip, () => {
expect(fileProcess.sha).to.exist
expect(fileProcess.sha.length).to.equal(40)
expect(fileSkip.sha).to.exist
expect(fileSkip.sha.length).to.equal(40)
expect(fileProcess.sha).not.to.equal(fileSkip.sha)
done()
})
})
})
it('should return error if any preprocessor fails', done => {
var failingPreprocessor = sinon.spy((content, file, done) => {
done(new Error('Some error'), null)
})
var injector = new di.Injector([{
'preprocessor:failing': ['factory', () => failingPreprocessor]
}])
pp = m.createPreprocessor({'**/*.js': ['failing']}, null, injector)
var file = {originalPath: '/some/a.js', path: 'path'}
pp(file, err => {
expect(err).to.exist
done()
})
})
it('should stop preprocessing after an error', done => {
var failingPreprocessor = sinon.spy((content, file, done) => {
done(new Error('Some error'), null)
})
var fakePreprocessor = sinon.spy((content, file, done) => {
done(null, content)
})
var injector = new di.Injector([{
'preprocessor:failing': ['factory', () => failingPreprocessor],
'preprocessor:fake': ['factory', () => fakePreprocessor]
}])
pp = m.createPreprocessor({'**/*.js': ['failing', 'fake']}, null, injector)
var file = {originalPath: '/some/a.js', path: 'path'}
pp(file, () => {
expect(fakePreprocessor).not.to.have.been.called
done()
})
})
it('should not preprocess binary files', done => {
var fakePreprocessor = sinon.spy((content, file, done) => {
done(null, content)
})
var injector = new di.Injector([{
'preprocessor:fake': ['factory', () => fakePreprocessor]
}])
pp = m.createPreprocessor({'**/*': ['fake']}, null, injector)
var file = {originalPath: '/some/photo.png', path: 'path'}
pp(file, err => {
if (err) throw err
expect(fakePreprocessor).not.to.have.been.called
expect(file.content).to.be.an.instanceof(Buffer)
done()
})
})
it('should not preprocess binary files with capital letters in extension', (done) => {
var fakePreprocessor = sinon.spy((content, file, done) => {
done(null, content)
})
var injector = new di.Injector([{
'preprocessor:fake': ['factory', () => fakePreprocessor]
}])
pp = m.createPreprocessor({'**/*': ['fake']}, null, injector)
var file = {originalPath: '/some/CAM_PHOTO.JPG', path: 'path'}
pp(file, err => {
if (err) throw err
expect(fakePreprocessor).not.to.have.been.called
expect(file.content).to.be.an.instanceof(Buffer)
done()
})
})
})