Rails - Dec 2006 - Can't get view helper plugin tests to include the correct Rails core code

Hi,

I have a plugin that adds some view helpers to generate html. The
plugin is small and seems to work fine but I''d like to add some tests.
I''ve tried following some tutorials on the web for making plugin tests
and also looked in some of technoweenie''s plugins to try and figure
this out but I keep getting errors. The problem seems to be trying to
include the correct code from the Rails core.

I''ve tried two version with two similar errors which are listed below.
Any ideas?

Thanks,
Peter

------------------------------------------

The first follows the nubyonrails tutorial[1]


require ''rubygems''
require ''test/unit''
require File.dirname(__FILE__) + ''/../lib/fork_helper''

require ''action_view/helpers/url_helper''
require ''action_view/helpers/javascript_helper''

class ForkTest < Test::Unit::TestCase
  include ActionView::Helpers::UrlHelper
  include ActionView::Helpers::JavaScriptHelper
  include ForkHelper

  def test_form_remote_tag
    output = fork_form_remote_tag(:url=>''/foo/bar'')
    assert_equal ''<form action="/foo/bar"
method="post"
onsubmit="FORK.Ajax.request(\''POST\'',
\''/foo/bar\'');return false;">'',
output
  end

end

I see the following error

Error:
test_form_remote_tag(ForkTest):
NoMethodError: undefined method `url_for'' for nil:NilClass
   
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_view/helpers/url_helper.rb:27:in
`send''
   
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_view/helpers/url_helper.rb:27:in
`url_for''
    ./test/../lib/fork_helper.rb:32:in `fork_remote_function''
    ./test/../lib/fork_helper.rb:10:in `fork_form_remote_tag''
    ./test/fork_test.rb:14:in `test_form_remote_tag''



------------------------------------------

The second version I''ve tried follows what seems to be
technoweenie''s
favorite approach[2]. This technique looks like it loads more than
necessary but that is ok if it is easier to work with.

$:.unshift(File.dirname(__FILE__) + ''/../lib'')

require File.dirname(__FILE__) +
''/../../../../config/environment''
require ''test/unit''
require ''rubygems''
require ''breakpoint''

require ''action_controller/test_process''

ActionController::Base.logger = nil
ActionController::Base.ignore_missing_templates = false
ActionController::Routing::Routes.reload rescue nil


class ForkTest < Test::Unit::TestCase
  include ActionView::Helpers::UrlHelper
  include ActionView::Helpers::JavaScriptHelper
  include ForkHelper

  def test_form_remote_tag
    output = fork_form_remote_tag(:url=>''/foo/bar'')
    assert_equal ''<form action="/foo/bar"
method="post"
onsubmit="FORK.Ajax.request(\''POST\'',
\''/foo/bar\'');return false;">'',
output
  end

end

I see the following error

Error:
test_form_remote_tag(ForkTest):
NoMethodError: You have a nil object when you didn''t expect it!
The error occured while evaluating nil.url_for
   
/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_view/helpers/url_helper.rb:27:in
`url_for''
    test/../../../../config/../vendor/plugins/fork/lib/fork_helper.rb:32:in
`fork_remote_function''
    test/../../../../config/../vendor/plugins/fork/lib/fork_helper.rb:10:in
`fork_form_remote_tag''
    ./test/fork_test.rb:28:in `test_form_remote_tag''


----------------------------



[1]
http://nubyonrails.com/articles/2006/05/09/the-complete-guide-to-rails-plugins-part-ii

[2]
http://svn.techno-weenie.net/projects/plugins/labeled_form_helper/test/labeled_form_helper_test.rb

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