Rspec / Capybara: Testing if a controller method is called
Solution 1
I'm not sure exactly what you want to test, and I think there's some confusion as to what methods can be used where, so I'll try and give examples of Routing specs, Request Specs, Controller specs, and Feature specs, and hopefully one of them will be appropriate for you.
Routing
If you want to make sure that your root path gets routed to the home#index
action, a routing spec may be appropriate:
spec/routing/routing_spec.rb
describe "Routing" do
it "routes / to home#index" do
expect(get("/")).to route_to("home#index")
end
end
Request
If you want to make sure that the index
template gets rendered on a request to your root path, a request spec may be appropriate:
spec/requests/home_requests_spec.rb
describe "Home requests" do
it 'successfully renders the index template on GET /' do
get "/"
expect(response).to be_successful
expect(response).to render_template(:index)
end
end
Controller
If you want to make sure that the index
template gets rendered on a request to the index
action of your HomeController
, a controller spec may be appropriate (and quite similar to a request spec in this case, but focused exclusively on the controller):
spec/controllers/home_controller_spec.rb
describe HomeController do
describe "GET index" do
it "successfully renders the index template" do
expect(controller).to receive(:index) # this line probably of dubious value
get :index
expect(response).to be_successful
expect(response).to render_template(:index)
end
end
end
Feature
If you want to make sure the page rendered by home#index
has some specific content, a feature spec may be appropriate (and also the only place you can use Capybara methods like visit
, depending on your Rails/RSpec version):
spec/features/home_features_spec.rb
feature "Index page" do
scenario "viewing the index page" do
visit root_path
expect(page).to have_text("Welcome to my awesome index page!")
end
end
Solution 2
class MyController < ApplicationController
def index
my_method
end
def my_method
end
end
describe MyController do
it 'calls my method' do
expect(controller).to receive(:my_method)
get :index
end
end
user2191332
Updated on June 19, 2022Comments
-
user2191332 almost 2 years
Given I set up a HomeController with an index action
class HomeController < ApplicationController def index @users = User.all end end
and routed to it via the root path,
root :to => "home#index"
why does this request spec fail
it 'should called the home#index action' do HomeController.should_receive(:index) visit root_path end
with the following message
Failure/Error: HomeController.should_receive(:index) (<HomeController (class)>).index(any args) expected: 1 time received: 0 times
? Is it because the index method is called as a instance method instead of a class method?