Simple functional test fails

[txapelgorri]

Hi there:

I'm starting with rails and I founded and issue that I can't figure
out how to solve:

 - This is the controller:
class StoriesController < ApplicationController
  def index
    @current_time = Time.now
    @story = Story.find_by_name('txapelgorri')
    @rand_story = Story.find(:first, :order => 'RANDOM()')
  end
end
 - This is the view:
    <p>Time <%= @current_time %></p>
    <p>A story <a href="<%= @story.link %>"><%= @story.name %></a></p>
    <p>A story (more polite): <%= link_to @story.name, @story.link %></
p>
    <p>Random history: <%= link_to @rand_story.name, @rand_story.link
%></p>
 - And finally this is the test:
class StoriesControllerTest < ActionController::TestCase
  def test_should_show_index
    get :index
    assert_response :success
    assert_template 'index'
    assert_not_nil assigns(:story)
  end
end

When running "rake test:functionals" it shows an error: "The error
occurred while evaluating nil.link on line #2 of stories/
index.html.erb". This error belongs to "assert_not_nil
assigns(:story)" at the test file (so it says the console). Isn't
supposed to be already a "not nil" instance variable when I declared
it at controller (Story.find_by_name, blah, blah)?.

Thanks in advance, txapelgorri.

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[Craig White-6]

On Wed, 2008-07-23 at 10:03 -0700, txapelgorri wrote:

> Hi there:
>
> I'm starting with rails and I founded and issue that I can't figure
> out how to solve:
>
>  - This is the controller:
> class StoriesController < ApplicationController
>   def index
>     @current_time = Time.now
>     @story = Story.find_by_name('txapelgorri')
>     @rand_story = Story.find(:first, :order => 'RANDOM()')
>   end
> end
>  - This is the view:
>     <p>Time <%= @current_time %></p>
>     <p>A story <a href="<%= @story.link %>"><%= @story.name %></a></p>
>     <p>A story (more polite): <%= link_to @story.name, @story.link %></
> p>
>     <p>Random history: <%= link_to @rand_story.name, @rand_story.link
> %></p>
>  - And finally this is the test:
> class StoriesControllerTest < ActionController::TestCase
>   def test_should_show_index
>     get :index
>     assert_response :success
>     assert_template 'index'
>     assert_not_nil assigns(:story)
>   end
> end
>
> When running "rake test:functionals" it shows an error: "The error
> occurred while evaluating nil.link on line #2 of stories/
> index.html.erb". This error belongs to "assert_not_nil
> assigns(:story)" at the test file (so it says the console). Isn't
> supposed to be already a "not nil" instance variable when I declared
> it at controller (Story.find_by_name, blah, blah)?.
>
> Thanks in advance, txapelgorri.

----
does test database have data? Are you using fixtures to populate test
database?

if you run...

script/console test
@story = Story.find_by_name('txapelgorri')

does it also generate an error?

Craig


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[Jeffrey L. Taylor-8]

Quoting txapelgorri <ibon.castilla@...>:

>
> Hi there:
>
> I'm starting with rails and I founded and issue that I can't figure
> out how to solve:
>
>  - This is the controller:
> class StoriesController < ApplicationController
>   def index
>     @current_time = Time.now
>     @story = Story.find_by_name('txapelgorri')
>     @rand_story = Story.find(:first, :order => 'RANDOM()')
>   end
> end
>  - This is the view:
>     <p>Time <%= @current_time %></p>
>     <p>A story <a href="<%= @story.link %>"><%= @story.name %></a></p>
>     <p>A story (more polite): <%= link_to @story.name, @story.link %></
> p>
>     <p>Random history: <%= link_to @rand_story.name, @rand_story.link
> %></p>
>  - And finally this is the test:
> class StoriesControllerTest < ActionController::TestCase
>   def test_should_show_index
>     get :index
>     assert_response :success
>     assert_template 'index'
>     assert_not_nil assigns(:story)
>   end
> end
>
> When running "rake test:functionals" it shows an error: "The error
> occurred while evaluating nil.link on line #2 of stories/
> index.html.erb". This error belongs to "assert_not_nil
> assigns(:story)" at the test file (so it says the console). Isn't
> supposed to be already a "not nil" instance variable when I declared
> it at controller (Story.find_by_name, blah, blah)?.

You are not loading any fixtures, so the test database may very well be
empty.  It the database is empty find(:first) will return nil.  You may be
confusing nil with undefined.

HTH,
  Jeffrey

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[txapelgorri]

Thanks both for answering. I was playing around with the code and I
probably miss to change the instance variable at any of the three
files :S
It finally get solved by it self. Thanks again.
Cheers, txapelgorri.

2008/7/23 txapelgorri <ibon.castilla@...>:

>
> Hi there:
>
> I'm starting with rails and I founded and issue that I can't figure
> out how to solve:
>
>  - This is the controller:
> class StoriesController < ApplicationController
>  def index
>    @current_time = Time.now
>    @story = Story.find_by_name('txapelgorri')
>    @rand_story = Story.find(:first, :order => 'RANDOM()')
>  end
> end
>  - This is the view:
>    <p>Time <%= @current_time %></p>
>    <p>A story <a href="<%= @story.link %>"><%= @story.name %></a></p>
>    <p>A story (more polite): <%= link_to @story.name, @story.link %></
> p>
>    <p>Random history: <%= link_to @rand_story.name, @rand_story.link
> %></p>
>  - And finally this is the test:
> class StoriesControllerTest < ActionController::TestCase
>  def test_should_show_index
>    get :index
>    assert_response :success
>    assert_template 'index'
>    assert_not_nil assigns(:story)
>  end
> end
>
> When running "rake test:functionals" it shows an error: "The error
> occurred while evaluating nil.link on line #2 of stories/
> index.html.erb". This error belongs to "assert_not_nil
> assigns(:story)" at the test file (so it says the console). Isn't
> supposed to be already a "not nil" instance variable when I declared
> it at controller (Story.find_by_name, blah, blah)?.
>
> Thanks in advance, txapelgorri.
>
> >
>

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