require 'rails_helper'

# This spec was generated by rspec-rails when you ran the scaffold generator.
# It demonstrates how one might use RSpec to specify the controller code that
# was generated by Rails when you ran the scaffold generator.
#
# It assumes that the implementation code is generated by the rails scaffold
# generator.  If you are using any extension libraries to generate different
# controller code, this generated spec may or may not pass.
#
# It only uses APIs available in rails and/or rspec-rails.  There are a number
# of tools you can use to make these specs even more expressive, but we're
# sticking to rails and rspec-rails APIs to keep things simple and stable.
#
# Compared to earlier versions of this generator, there is very limited use of
# stubs and message expectations in this spec.  Stubs are only used when there
# is no simpler way to get a handle on the object needed for the example.
# Message expectations are only used when there is no simpler way to specify
# that an instance is receiving a specific message.

RSpec.describe CoursesController, type: :controller do

  # This should return the minimal set of attributes required to create a valid
  # Course. As you add validations to Course, be sure to
  # adjust the attributes here as well.  
  let(:valid_attributes) {
    { :name => "I am a valid course" }
  }

  let(:invalid_attributes) {
    { :name => "" }
  }

  # This should return the minimal set of values that should be in the session
  # in order to pass any filters (e.g. authentication) defined in
  # CoursesController. Be sure to keep this updated too.
  let(:valid_session) { {} }

  describe "GET #index" do
    it "assigns all courses as @courses" do
      course = Course.create! valid_attributes
      get :index, {}, valid_session
      expect(assigns(:courses)).to eq([course])
    end
  end

  describe "GET #show" do
    it "assigns the requested course as @course" do
      course = Course.create! valid_attributes
      get :show, {:id => course.to_param}, valid_session
      expect(assigns(:course)).to eq(course)
    end
  end

  describe "GET #new" do
    it "assigns a new course as @course" do
      get :new, {}, valid_session
      expect(assigns(:course)).to be_a_new(Course)
    end
  end

  describe "GET #edit" do
    it "assigns the requested course as @course" do
      course = Course.create! valid_attributes
      get :edit, {:id => course.to_param}, valid_session
      expect(assigns(:course)).to eq(course)
    end
  end

  describe "POST #create" do
    context "with valid params" do
      it "creates a new Course" do
        expect {
          post :create, {:course => valid_attributes}, valid_session
        }.to change(Course, :count).by(1)
      end

      it "assigns a newly created course as @course" do
        post :create, {:course => valid_attributes}, valid_session
        expect(assigns(:course)).to be_a(Course)
        expect(assigns(:course)).to be_persisted
      end

      it "redirects to the created course" do
        post :create, {:course => valid_attributes}, valid_session
        expect(response).to redirect_to(Course.last)
      end
    end

    context "with invalid params" do
      it "assigns a newly created but unsaved course as @course" do
        post :create, {:course => invalid_attributes}, valid_session
        expect(assigns(:course)).to be_a_new(Course)
      end

      it "re-renders the 'new' template" do
        post :create, {:course => invalid_attributes}, valid_session
        expect(response).to render_template("new")
      end
    end
  end

  describe "PUT #update" do
    context "with valid params" do
          
      let(:new_attributes) {
        {:name => "I am a new name for the course" }
      }
      
      it "updates the requested course" do
        teacher = create :teacher
        cc1 =  attributes_for(:course_component, :teacher_id => teacher.id, :participants => 30)
        
        course = Course.create! valid_attributes
        put :update, {:id => course.to_param, :course => {:name => "I am a new name for the course", :components_attributes =>[cc1]}}, valid_session
        course.reload
        expect(course.name).to eq "I am a new name for the course"
        expect(course.components.count).to eq 1
        expect(course.components.first.participants).to eq 30
        
      end

      it "assigns the requested course as @course" do
        course = Course.create! valid_attributes
        put :update, {:id => course.to_param, :course => valid_attributes}, valid_session
        expect(assigns(:course)).to eq(course)
      end

      it "redirects to the course" do
        course = Course.create! valid_attributes
        put :update, {:id => course.to_param, :course => valid_attributes}, valid_session
        expect(response).to redirect_to(course)
      end
    end

    context "with invalid params" do
      it "assigns the course as @course" do
        course = Course.create! valid_attributes
        put :update, {:id => course.to_param, :course => invalid_attributes}, valid_session
        expect(assigns(:course)).to eq(course)
      end

      it "re-renders the 'edit' template" do
        course = Course.create! valid_attributes
        put :update, {:id => course.to_param, :course => invalid_attributes}, valid_session
        expect(response).to render_template("edit")
      end
    end
  end

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

    it "redirects to the courses list" do
      course = Course.create! valid_attributes
      delete :destroy, {:id => course.to_param}, valid_session
      expect(response).to redirect_to(courses_url)
    end
  end

end
