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