Question

我正在尝试对服务进行单元测试，而不依赖于我的应用程序模块。这应该如何运作？

代码：

#karma.conf.coffee
files: [
  'bower_components/angular/angular.js'   # angular core
  'bower_components/**/angular-*.js'      # all angular plugins
  'utils/typometer.js'
  'utils/typometer.spec.js'
]

# utils/typometer.coffee
angular.module('myApp').factory 'typometer', ->
  @sizes =
    'A':8
    'B':9
  @ # return `this`

# utils/typometer.spec.coffee
describe 'typometer', ->
  typometer = undefined # scope control
  # Create a mock module so that the typometer factory has something to attach to
  beforeEach angular.mock.module 'myApp' #TODO: why doesn't mock.module work?
  # Inject the typometer service
  beforeEach angular.mock.inject (_typometer_) ->
    typometer = _typometer_ # http://docs.angularjs.org/api/angular.mock.inject

  it 'exists', ->
    expect(typometer).toBeDefined() # fail. 'Uncaught Error: [$injector:nomod] Module 'coatue' is not available!'
    expect(typometer.sizes.A).toEqual 8

最终目标是能够实例化typometer服务并单独测试它，而无需站立myApp模块的实际实例。

我认为这是某种操作顺序问题。当声明typometer工厂时，该模块不存在 - 我想测试我的生产文件。在加载任何测试文件之前，我是否必须创建一个shell应用程序或加载真实应用程序？这是我想从测试考虑中删除的依赖项。

Answer 1

我想我现在明白了。对于工作设置，需要执行以下所有操作：

加载角度+角度插件
加载相关模块定义（例如：myApp）。这就是我错过的。
加载要测试的文件
加载规格
让测试规范实例化受测试的依赖模块和注射剂

这是一个有效的设置：

#karma.conf.coffee
files: [
  'bower_components/angular/angular.js'   # angular core
  'bower_components/**/angular-*.js'      # all angular plugins
      'main.js'                               # still need to load the app definition
  'utils/typometer.js'
  'utils/typometer.spec.js'
]

# utils/typometer.coffee
angular.module('myApp').factory 'typometer', ->
  @sizes =
    'A':8
    'B':9
  @ # return `this`

# utils/typometer.spec.coffee
describe 'typometer', ->
  typometer = undefined # scope control
  beforeEach ->
    angular.mock.module 'myApp' # instantiate the mock app
    angular.mock.inject (_typometer_) -> # instantiate the mock service
      typometer = _typometer_ # http://docs.angularjs.org/api/angular.mock.inject

  it 'exists', ->
    expect(typometer).toBeDefined()
    expect(typometer.sizes.A).toEqual 8

模拟角度模块，以便测试工厂

1 个答案: