How do I test a controller with rspec-rails?

问题

I want to test that my edit recipe page renders using rspec, though it doesn’t route to

    recipes/edit

it routes to recipes/id/edit (id being replaced with a number)

my current test looks like this

 describe "Show Edit Recipe Page" do

  it "should display edit recipe  page" do
    get :edit
    response.should be_success
    response.should render_template(:edit)
  end
end

how can i test this page correctly, at the moment my tests are failing

回答1:

Problem

Your example doesn't include the code needed to actually test a controller object. RecipeController is not defined in your spec.

Solution

Make sure your controller specs live under spec/controllers or have an explicit type: :controller set. Then, actually describe a controller, either using the implicit subject or by setting up a controller instance in a before or test block. As the most basic example:

describe RecipeController do
  # test something using the implied RecipeController.new
end

More Reading

RSpec Controller Specs

回答2:

The get needs the id of the recipe passed in the params hash:

let(:recipe) { Factory.create(:recipe) }

it "should display edit recipe page" do
  get :edit, :id => recipe.id
  response.should be_success
  response.should render_template(:edit)
end

来源：https://stackoverflow.com/questions/13185552/how-do-i-test-a-controller-with-rspec-rails