describe UnitsController do
  login_admin

  before :each do
    @course = FactoryGirl.create :course
    @unit = FactoryGirl.create :unit, course: @course
  end

  # This should return the minimal set of attributes required to create a valid
  # Unit. As you add validations to Unit, be sure to
  # update the return value of this method accordingly.
  def valid_attributes
    { "name" => "MyString", "course_id" => @course.id}
  end

  describe "GET index" do
    it "assigns all units as @units" do
      unit = Unit.create! valid_attributes
      get :index, :course_id => @course.id
      assigns(:units).should include(unit)
    end
  end

  describe "GET show" do
    it "assigns the requested unit as @unit" do
      unit = Unit.create! valid_attributes
      get :show, :course_id => @course.id, :id => unit.to_param
      assigns(:unit).should eq(unit)
    end
  end

  describe "GET new" do
    it "assigns a new unit as @unit" do
      get :new, :course_id => @course.id
      assigns(:unit).should be_a_new(Unit)
    end
  end

  describe "GET edit" do
    it "assigns the requested unit as @unit" do
      unit = Unit.create! valid_attributes
      get :edit, :course_id => @course.id, :id => unit.to_param
      assigns(:unit).should eq(unit)
    end
  end

  describe "POST create" do
    describe "with valid params" do
      it "creates a new Unit" do
        expect {
          post :create, :course_id => @course.id, :unit => valid_attributes
        }.to change(Unit, :count).by(1)
      end

      it "assigns a newly created unit as @unit" do
        post :create, :course_id => @course.id, :unit => valid_attributes
        assigns(:unit).should be_a(Unit)
        assigns(:unit).should be_persisted
      end

      it "redirects to the created unit" do
        unit_id = 1
        Unit.any_instance.should_receive(:save).and_return(true)
        Unit.any_instance.stub(:id).and_return(unit_id)
        post :create, :course_id => @course.to_param , :unit => valid_attributes
        response.should redirect_to(course_unit_path(@course, unit_id))
      end
    end

    describe "with invalid params" do
      it "assigns a newly created but unsaved unit as @unit" do
        # Trigger the behavior that occurs when invalid params are submitted
        Unit.any_instance.stub(:save).and_return(false)
        post :create, :course_id => @course.id, :unit => { "name" => "invalid value" }
        assigns(:unit).should be_a_new(Unit)
      end

      it "re-renders the 'new' template" do
        # Trigger the behavior that occurs when invalid params are submitted
        Unit.any_instance.stub(:save).and_return(false)
        post :create, :course_id => @course.id, :unit => { "name" => "invalid value" }
        response.should render_template("new")
      end
    end
  end

  describe "PUT update" do
    describe "with valid params" do
      it "updates the requested unit" do
        unit = Unit.create! valid_attributes
        # Assuming there are no other units in the database, this
        # specifies that the Unit created on the previous line
        # receives the :update_attributes message with whatever params are
        # submitted in the request.
        Unit.any_instance.should_receive(:update_attributes).with({ "name" => "MyString" })
        put :update,  :course_id => @course.to_param, :id => unit.to_param, :unit => { "name" => "MyString" }
      end

      it "assigns the requested unit as @unit" do
        unit = Unit.create! valid_attributes
        put :update,  :course_id => @course.to_param, :id => unit.to_param, :unit => valid_attributes
        assigns(:unit).should eq(unit)
      end

      it "redirects to the unit" do
        unit = Unit.create! valid_attributes
        put :update, :course_id => @course.to_param ,:id => unit.to_param, :unit => valid_attributes
        response.should redirect_to(course_unit_path(@course, unit))
      end
    end

    describe "with invalid params" do
      it "assigns the unit as @unit" do
        unit = Unit.create! valid_attributes
        # Trigger the behavior that occurs when invalid params are submitted
        Unit.any_instance.stub(:save).and_return(false)
        put :update, :course_id => @course.to_param, :id => unit.to_param, :unit => { "name" => "invalid value" }
        assigns(:unit).should eq(unit)
      end

      it "re-renders the 'edit' template" do
        unit = Unit.create! valid_attributes
        # Trigger the behavior that occurs when invalid params are submitted
        Unit.any_instance.stub(:save).and_return(false)
        put :update, :course_id => @course.to_param, :id => unit.to_param, :unit => { "name" => "invalid value" }
        response.should render_template("edit")
      end
    end
  end

  describe "DELETE destroy" do
    it "destroys the requested unit" do
      unit = Unit.create! valid_attributes
      expect {
        delete :destroy, :course_id => @course.to_param, :id => unit.to_param
      }.to change(Unit, :count).by(-1)
    end

    it "redirects to the units list" do
      unit = Unit.create! valid_attributes
      delete :destroy, :course_id => @course.to_param, :id => unit.to_param
      response.should redirect_to(units_url)
    end
  end

end