How to test instance variable is assigned in Rspec?

[Larry Zhao]

Hi, Guys,

When I test Grape API with Rspec in Rails project, how should I test instance variable is assigned? like @current_user ?

Thank you very much.

Best Regards.

Larry

[Daniel Doubrovkine]

I think you cannot reach into the endpoint at execution time. Curious what your scenario is, I can't think of a time when I'd want something like this?

--
You received this message because you are subscribed to the Google Groups "Grape Framework Discussion" group.
To unsubscribe from this group and stop receiving emails from it, send an email to ruby-grape+...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

--

dB. | Moscow - Geneva - Seattle - New York
code.dblock.org - @dblockdotorg - artsy.net - github/dblock

[Larry Zhao]

​The scenario is something like @current_user in Rails when a user browse the website after he logged in. 

It authenticates the user and set @current_user in a `before` method, and @current_user could be used in the following execution of the API, so that the process knows this API call is on behalf of a certain user.

Is it a wrong approach to do this? What's the recommended way?

Best Regards.

Larry

[Daniel Doubrovkine]

IMHO I think @variable is an unfriendly pattern because it's unclear what its scope is. I always found that really confusing in Rails controllers.

I generally write helpers like this:

module WardenHelper

  def authenticated?(*args)

    warden.authenticated?(*args)

  end

  def current_user(*args)

    warden.user(*args)

  end

  def current_user=(user)

    warden.set_user user

  end

  def warden

    request.env['warden']

  end

end

So you can see how this is delegated to Warden, and warden can be stubbed easily in a test.

--

You received this message because you are subscribed to the Google Groups "Grape Framework Discussion" group.
To unsubscribe from this group and stop receiving emails from it, send an email to ruby-grape+...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

[Larry Zhao]

Hi, Daniel,

That is great. I will also try to go this way. Thanks a lot.

Actually I not using warden / Devise to authenticate in our API. We use our own approach to do the authentication and set @current_user in a helper method executed before the actual API execution. 

Beside the user authentication, there's other places that I use an instance variable throughout the API process, like we use jbuilder to render json output and use instance variable to pass the model objects to jbuilder templates. I still would like to know if there's a way to test instance variable assignment in RSpec for Grape?

Best Regards.

Larry

--

Cheers ~

Larry

--
You received this message because you are subscribed to a topic in the Google Groups "Grape Framework Discussion" group.
To unsubscribe from this topic, visit https://groups.google.com/d/topic/ruby-grape/T566JthhrZM/unsubscribe.
To unsubscribe from this group and all its topics, send an email to ruby-grape+...@googlegroups.com.