Nested API : ActionController::UrlGenerationError - No route matches - ruby-on-rails

Question

I want to test my API with RSpec.
Api::V1::EventsController exists and has a create method. I use simple_token_authentication and pundit for security.
routes.rb
Rails.application.routes.draw do
namespace :api do
namespace :v1 do
# users/
resources :users, only: [:show, :update] do
# users/:id/events/
resources :events
end
end
end
end
Spec :
RSpec.describe Api::V1::EventsController, type: :controller do
describe 'events#create' do
before {
#user = User.create(email: 'm#m.fr', password: '12345678', password_confirmation: '12345678')
#user.reload
}
it 'should 401 if bad credentials' do
# Given the user
# When
post "/api/v1/users/#{#user.id}/events", {},
{
'x-user-email' => 'toto',
'x-user-token' => 'toto'
}
# Then
expect_status 401
end
end
end
And i get this error :
Failure/Error: post "/api/v1/users/#{#user.id}/events", {},
ActionController::UrlGenerationError:
No route matches {:action=>"/api/v1/users/1/events", :controller=>"api/v1/events"}
EDIT and answer :
I was confused and i was using rspec controller when i wanted to use rspec request.
Here's my working example :
RSpec.describe Api::V1::EventsController, type: :controller do
describe 'events#create' do
before {
#user = User.create(email: 'm#m.fr', password: '12345678', password_confirmation: '12345678')
#user.reload
}
it 'should 401 if bad credentials' do
# Given the user
# When
post "/api/v1/users/#{#user.id}/events", {}.to_json,
{
'Accept' => 'application/json',
'Content-Type' => 'application/json',
'x-user-email' => 'toto',
'x-user-token' => 'toto'
}
# Then
expect_status 401
end
end
end

Answer 1

The post method in a controller spec takes an action name for the first parameter, not a path, so instead of:
post "/api/v1/users/#{#user.id}/events", #...
try:
post :create, #...
Controller specs are unit tests. If you want to test the entire stack, use a feature spec instead of a controller spec.

Answer 2

You don't need to do the request with the full path, because you already testing the Api::V1::EventsController.
So it will be much better to use special syntax for it:
post :create, nil, {
'x-user-email' => 'toto',
'x-user-token' => 'toto'
}
expect(response.response_code).to eq 401
If you want to test the route, you should do it in the routes specs:
# spec/routing/api_v1_events_routing_spec.rb
require "spec_helper"
RSpec.describe Api::V1::EventsController do
describe "routing" do
it "#create" do
expect(post: "/api/v1/users/1/events").to \
route_to(controller: "api/v1/events", action: "create", user_id: "1")
end
end
end