tab/spec/controllers/users_controller_spec.rb

describe UsersController, type: :controller do
  before :each do
    @user = create :penning
    sign_in @user
  end

  describe "GET show" do
    before :each do
      get :show, params: {id: @user}
    end

    it "should be successful" do
      expect(response).to render_template(:show)
      expect(response).to have_http_status(200)
    end

    it "should load the correct user" do
      expect(assigns(:user)).to eq(@user)
    end
  end

  describe "GET index" do
    before :each do
      get :index
    end

    it "should load an array of all users" do
      expect(assigns(:users)).to eq([@user])
    end

    it "should render the correct template" do
      expect(response).to have_http_status(200)
      expect(response).to render_template(:index)
    end
  end
end