ActionController::RoutingError: No route matches error while unit testing

Question

I found a lot of questions with same title but could not found the appropriate answer.

I am testing a controller

Player Controller

def create
 player = Player.create(params[':player'])

if player.valid?
  # if creation successful, log the player in:
  player_session = PlayerSession.create(
    player: player,
    session_token: ActiveSupport::SecureRandom.urlsafe_base64
  )

  render json: {session_token: player_session.session_token}
else
  render json: {error: "Player name already exists."}, status: :unprocessable_entity
 end
end

Player Controller Test

test "create" do
    post(:create,
            {
                'player' => {
                    'player_name' => "usman", 
                    'password' => 123, 
                    'email' => 'ranasaani@gmail.com'
                }
            }
        )
    assert_select response.body
end

while executing the test file the following errors display on console.

ActionController::RoutingError: No route matches {:player=>{"player_name"=>"usman", "password"=>123, "email"=>"ranasaani@gmail.com"}, :controller=>"pl
ayers", :action=>"create"}
    D:/jruby-1.7.1/lib/ruby/gems/shared/gems/actionpack-3.0.3/lib/action_dispatch/routing/route_set.rb:424:in `raise_routing_error'
    D:/jruby-1.7.1/lib/ruby/gems/shared/gems/actionpack-3.0.3/lib/action_dispatch/routing/route_set.rb:406:in `generate'
    D:/jruby-1.7.1/lib/ruby/gems/shared/gems/actionpack-3.0.3/lib/action_dispatch/routing/route_set.rb:453:in `generate'
    D:/jruby-1.7.1/lib/ruby/gems/shared/gems/actionpack-3.0.3/lib/action_dispatch/routing/route_set.rb:449:in `generate_extras'
    D:/jruby-1.7.1/lib/ruby/gems/shared/gems/actionpack-3.0.3/lib/action_dispatch/routing/route_set.rb:445:in `extra_keys'
    D:/jruby-1.7.1/lib/ruby/gems/shared/gems/actionpack-3.0.3/lib/action_controller/test_case.rb:143:in `assign_parameters'
    D:/jruby-1.7.1/lib/ruby/gems/shared/gems/actionpack-3.0.3/lib/action_controller/test_case.rb:402:in `process'
    D:/jruby-1.7.1/lib/ruby/gems/shared/gems/actionpack-3.0.3/lib/action_controller/test_case.rb:47:in `process'
    D:/jruby-1.7.1/lib/ruby/gems/shared/gems/actionpack-3.0.3/lib/action_controller/test_case.rb:355:in `post'
    D:/Projects/lyricle/test/functional/players_controller_test.rb:5:in `test_create'
    org/jruby/RubyBasicObject.java:1659:in `__send__'

why this error is here?

Answer 1

You have to define routes if you want anything to be able to access your controller.

So, in your config/routes.rb :

App::Application.routes.draw do
  resources :your_resource_plural_name
end

Answer 2

The create action should be like this:

def create
 @player = Player.new(params[:player])
 #your code
end

also you need to add new action before create action:

 def new
    @player = Player.new
end

in routes.rb you should have resources :players

@player is an instance variable to make you able to call it in the view also.

See Rails Guide to create your first application.

Also check Rails for Zombies they are very good