context_manager_spec.coffee

describe 'Contexts.ContextManager', ->
  reloadContextManager = ->
    @contextManager = new Contexts.ContextManager

  sampleContext = {id: 'uniqueId'}
  differentContext = {id: 'differentId'}

  describe '#push', ->
    beforeEach reloadContextManager

    it 'with different contexts', ->
      @contextManager.push sampleContext
      (expect =>
        @contextManager.push differentContext
      ).not.toThrow()

    it 'with equal contexts', ->
      @contextManager.push sampleContext
      (expect =>
        @contextManager.push sampleContext
      ).toThrow()

  describe '#pop', ->
    beforeEach reloadContextManager

    it 'should not allow poping an unpushed context', ->
      (expect =>
        @contextManager.pop sampleContext
      ).toThrow()

    it 'should allow poping a pre-pushed context', ->
      @contextManager.push sampleContext
      (expect =>
        @contextManager.pop sampleContext
      ).not.toThrow()

    it 'should return an undefined context after poping the last one', ->
      @contextManager.push sampleContext
      @contextManager.pop sampleContext

      (expect @contextManager.current()).toBeUndefined()

  describe '#isCurrent', ->
    beforeEach reloadContextManager

    it 'while is the current', ->
      @contextManager.push sampleContext
      (expect @contextManager.isCurrent sampleContext).toBeTruthy()

    it 'while is the current', ->
      @contextManager.push sampleContext
      (expect @contextManager.isCurrent differentContext).toBeFalsy()

    it 'without a current context', ->
      (expect @contextManager.isCurrent sampleContext).toBeFalsy()