view_paths does not work with actions or partials

Okay. I managed to test for render :action but I'm not sure how to test that a specific partial got rendered. Here's the code:

### app/controllers/view_paths_test_controller.rb
class ViewPathsTestController < ApplicationController
  before_filter do
    prepend_view_path 'views/overrides'
  end
  
  def action_without_override
    render :action => 'action_without_override'
  end
  
  def action_with_override
    render :action => 'action_with_override'
  end
  
  def partial_without_override
    render :action => 'partial_without_override'
  end
  
  def partial_with_override
    render :action => 'partial_with_override'
  end
end

### test/functional/view_paths_test_controller_test.rb
require File.dirname(__FILE__) + '/../test_helper'

class ViewPathsTestControllerTest < ActionController::TestCase
  def setup
    @controller = ViewPathsTestController.new
    @request = ActionController::TestRequest.new
    @response = ActionController::TestResponse.new
  end
  
  def test_action_without_override
    get :action_without_override
    assert_template 'view_paths_test/action_without_override'
  end
  
  def test_action_with_override
    get :action_with_override
    assert_template 'overrides/action_with_override'
  end
end

I have the following templates:

• views/view_paths_test/action_without_override.html.erb
• views/view_paths_test/action_with_override.html.erb
• views/view_paths_test/partial_without_override.html.erb
• views/view_paths_test/_partial_without_override.html.erb
• views/view_paths_test/partial_with_override.html.erb
• views/view_paths_test/_partial_with_override.html.erb
• views/overrides/action_with_override.html.erb
• views/overrides/_partial_with_override.html.erb

The first test passes, the second fails since view_paths_test/action_with_override.html.erb is rendered instead of overrides/action_with_override.html.erb. Again, I'm not sure how to assert that a partial got rendered so I don't know how to write tests for that, although all the actual code and templates are in place for demonstration.

I tested out your code in Rails 2.1 and had the same result.

A couple problems with your test though:

prepend_view_path adds a new base path, so you would need:

views/overrides/view_paths_test/action_with_override.html.erb

instead of

views/overrides/action_with_override.html.erb

I was able to get #prepend_view_paths to work as expected by making the following changes to your code example:

My templates:

• views/view_paths_test/action_without_override.html.erb
• views/view_paths_test/action_with_override.html.erb
• views/view_paths_test/partial_without_override.html.erb
• views/view_paths_test/_partial_without_override.html.erb
• views/view_paths_test/partial_with_override.html.erb
• views/view_paths_test/_partial_with_override.html.erb
• other_views/view_paths_test/action_with_override.html.erb
• other_views/view_paths_test/_partial_with_override.html.erb

Whoops, didn't like my formatting:

class ViewPathsTestController < ApplicationController
  # Doesn't work when using block form!
  before_filter :override_views

  def override_views
    self.prepend_view_path RAILS_ROOT + '/app/other_views'
  end

Aha, that clears it up! The docs don't explain this very well. The examples provided are:

ArticleController.prepend_view_path("views/default")
ArticleController.prepend_view_path(["views/default", "views/custom"])

Also, is there a method for asserting that a partial was rendered? It would be reassuring to have tests for the partials as well.