overleaf/services/clsi/test/unit/coffee/UrlFetcherTests.coffee
2014-02-12 17:27:43 +00:00

74 lines
2.1 KiB
CoffeeScript

SandboxedModule = require('sandboxed-module')
sinon = require('sinon')
require('chai').should()
modulePath = require('path').join __dirname, '../../../app/js/UrlFetcher'
EventEmitter = require("events").EventEmitter
describe "UrlFetcher", ->
beforeEach ->
@callback = sinon.stub()
@url = "www.example.com/file"
@UrlFetcher = SandboxedModule.require modulePath, requires:
request: defaults: @defaults = sinon.stub().returns(@request = {})
fs: @fs = {}
it "should turn off the cookie jar in request", ->
@defaults.calledWith(jar: false)
.should.equal true
describe "_pipeUrlToFile", ->
beforeEach ->
@path = "/path/to/file/on/disk"
@request.get = sinon.stub().returns(@urlStream = new EventEmitter)
@urlStream.pipe = sinon.stub()
@fs.createWriteStream = sinon.stub().returns(@fileStream = "write-stream-stub")
@UrlFetcher.pipeUrlToFile(@url, @path, @callback)
it "should request the URL", ->
@request.get
.calledWith(@url)
.should.equal true
it "should open the file for writing", ->
@fs.createWriteStream
.calledWith(@path)
.should.equal true
describe "successfully", ->
beforeEach ->
@res = statusCode: 200
@urlStream.emit "response", @res
@urlStream.emit "end"
it "should pipe the URL to the file", ->
@urlStream.pipe
.calledWith(@fileStream)
.should.equal true
it "should call the callback", ->
@callback.called.should.equal true
describe "with non success status code", ->
beforeEach ->
@res = statusCode: 404
@urlStream.emit "response", @res
@urlStream.emit "end"
it "should call the callback with an error", ->
@callback
.calledWith(new Error("URL returned non-success status code: 404"))
.should.equal true
describe "with error", ->
beforeEach ->
@urlStream.emit "error", @error = new Error("something went wrong")
it "should call the callback with the error", ->
@callback
.calledWith(@error)
.should.equal true
it "should only call the callback once, even if end is called", ->
@urlStream.emit "end"
@callback.calledOnce.should.equal true