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79 lines
2.2 KiB
CoffeeScript
79 lines
2.2 KiB
CoffeeScript
require('coffee-script')
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chai = require('chai')
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should = chai.should()
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expect = chai.expect
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path = require('path')
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modulePath = path.join __dirname, '../../../timeAsyncMethod.coffee'
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SandboxedModule = require('sandboxed-module')
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sinon = require("sinon")
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describe 'timeAsyncMethod', ->
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beforeEach ->
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@Timer = {done: sinon.stub()}
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@TimerConstructor = sinon.stub().returns(@Timer)
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@metrics = {
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Timer: @TimerConstructor
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}
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@timeAsyncMethod = SandboxedModule.require modulePath, requires:
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'./metrics': @metrics
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@testObject = {
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nextNumber: (n, callback=(err, result)->) ->
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setTimeout(
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() ->
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callback(null, n+1)
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, 100
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)
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}
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it 'should have the testObject behave correctly before wrapping', (done) ->
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@testObject.nextNumber 2, (err, result) ->
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expect(err).to.not.exist
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expect(result).to.equal 3
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done()
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it 'should wrap method without error', (done) ->
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@timeAsyncMethod @testObject, 'nextNumber', 'test.nextNumber'
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done()
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it 'should transparently wrap method invocation in timer', (done) ->
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@timeAsyncMethod @testObject, 'nextNumber', 'test.nextNumber'
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@testObject.nextNumber 2, (err, result) =>
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expect(err).to.not.exist
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expect(result).to.equal 3
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expect(@TimerConstructor.callCount).to.equal 1
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expect(@Timer.done.callCount).to.equal 1
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done()
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describe 'when base method produces an error', ->
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beforeEach ->
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@testObject.nextNumber = (n, callback=(err, result)->) ->
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setTimeout(
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() ->
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callback(new Error('woops'))
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, 100
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)
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it 'should propagate the error transparently', (done) ->
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@timeAsyncMethod @testObject, 'nextNumber', 'test.nextNumber'
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@testObject.nextNumber 2, (err, result) =>
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expect(err).to.exist
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expect(err).to.be.instanceof Error
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expect(result).to.not.exist
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done()
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describe 'when a logger is supplied', ->
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beforeEach ->
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@logger = {log: sinon.stub()}
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it 'should also call logger.log', (done) ->
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@timeAsyncMethod @testObject, 'nextNumber', 'test.nextNumber', @logger
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@testObject.nextNumber 2, (err, result) =>
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expect(err).to.not.exist
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expect(result).to.equal 3
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expect(@TimerConstructor.callCount).to.equal 1
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expect(@Timer.done.callCount).to.equal 1
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expect(@logger.log.callCount).to.equal 1
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done()
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