Rails - Mar 2012 - Using @current_user in tests

I am still trying to run this test
setup do

    @comment = comments(:hello)
    @comment.commenter = "cleb"
    @comment.body = "hello"
    @comment.user_id = 1
    @cuser = User.find_by_id(session[:user_id])
  end
test "should create comment" do

    assert_difference(''Comment.count'') do
      post :create, :comment => @comment.attributes, :user_id => 2
    end

    assert_redirected_to comment_path(assigns(:comment))
  end

I get this error

test_should_create_comment(CommentsControllerTest):
NoMethodError: undefined method `login'' for nil:NilClass

This is from comments.controller

  def create
    @cuser = @current_user
    @user = User.find(params[:user_id])
    @user.comments.create(:user_id => @user.id, :commenter =>
@cuser.login,  :body => params[:comment][:body])
    respond_to do |format|
     format.js
     format.html {redirect_to user_path}
    end
  end

How do I give the controller the required @current_user ?

(Derived from @current_user = User.find_by_id(session[:user_id])

What am I doing wrong?

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On 28 March 2012 20:22, Neil Bye
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>
wrote:
> I am still trying to run this test
> setup do
>
>    @comment = comments(:hello)
>    -I4CJOCdi0N6MpLzNofplXlAUjnlXr6A1@public.gmane.org = "cleb"
>    -I4CJOCdi0N4nHFPqiawQgA@public.gmane.org = "hello"
>    -I4CJOCdi0N4BB6bauf/WkQ@public.gmane.org_id = 1
>    @cuser = User.find_by_id(session[:user_id])
>  end
> test "should create comment" do
>
>    assert_difference(''Comment.count'') do
>      post :create, :comment => @comment.attributes, :user_id => 2
>    end
>
>    assert_redirected_to comment_path(assigns(:comment))
>  end
>
> I get this error
>
> test_should_create_comment(CommentsControllerTest):
> NoMethodError: undefined method `login'' for nil:NilClass
>
> This is from comments.controller
>
>  def create
>    @cuser = @current_user
>    @user = User.find(params[:user_id])
>    -ASQrhD/3864Qoru3DLDRmva12rvzsF7f@public.gmane.org(:user_id =>
@user.id, :commenter =>
> @cuser.login,  :body => params[:comment][:body])
>    respond_to do |format|
>     format.js
>     format.html {redirect_to user_path}
>    end
>  end
>
> How do I give the controller the required @current_user ?
>
> (Derived from @current_user = User.find_by_id(session[:user_id])
>
> What am I doing wrong?
The first thing is that you have not noticed that the error is
pointing out a bug in your code (as tests should do).  You should be
checking in create that there is a user logged in (or not allowing
access to the action if no-one is logged in).  So first you need to
add a test to check that the action cannot be accessed if no-one is
logged in.  In order to get the test you have shown to pass you need
to effectively login a user by setting up the session.  I have to go
so have not time to describe it but if you google for setting session
in rails tests then you should easily find it.

Colin

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