Rspec 和 Rspec-Rails Gem 有什么区别

比较 RSpec 和 RSpec-Rails Gem

ruby
describe Calculator do
  it "adds two numbers" do
    calculator = Calculator.new
    result = calculator.add(2, 3)
    expect(result).to eq(5)
  end
  it "subtracts two numbers" do
    calculator = Calculator.new
    result = calculator.subtract(5, 3)
    expect(result).to eq(2)
  end
end

ruby
RSpec.describe UsersController, type: :controller do
  describe "GET #index" do
    it "returns a successful response" do
      get :index
      expect(response).to be_successful
    end
    it "renders the index template" do
      get :index
      expect(response).to render_template(:index)
    end
  end
end