Question

I m trying to test the routes on my rails 2.3.4 application. There are several sites that explain how to test routes, including the rails docs, but I m getting errors following the instructions.

First, I m assuming that these tests can be done in related unit test files. There seems to be no more obvious place, and none of the docs specify.

That said, this is a condensed version of test/unit/TitlesTest.rb

require File.dirname(__FILE__) +  /../test_helper 

class TitleTest < Test::Unit::TestCase
  # include ActionController::Assertions::RoutingAssertions

  def test_routes
    assert_routing "games", { :controller => "titles", :section => "games", :action => "index", :id => nil }
  end
end

rake test:units fails with the error:

NoMethodError: undefined method `assert_routing  for #<TitleTest:0x7f387232ec98>
    /test/unit/title_test.rb:7:in `test_routes

I saw in the Rails API that assert_routing is defined in ActionController::Assertions::RoutingAssertions, so I attempted to include that module, only to have it fail elsewhere.

Note the commented include line in the code example above.

NoMethodError: undefined method `clean_backtrace  for #<TitleTest:0x7fd895fadf00>
    /test/unit/title_test.rb:7:in `test_routes

clean_backtrace is another testing method defined in ActionController::TestCase::Assertions.

I m not getting any google search results for these errors - no one else seems to be having this problem. The problem also occurs if I recreate the scenario in a freshly generated rails app. I don t think I should be having to include these modules in my test cases. What might be wrong here?

Answer 1

There s a list of upgrading Rails gotchas on Giant Robots. Apparently your routing test should use class ActionController::TestCase, not ActiveSupport::TestCase.

Answer 2

Routing tests should be done as part of integration tests.

These can be generated using script/generate script/generate integration_test routes

An example:

class RoutesTest < ActionController::IntegrationTest
  fixtures :all

  def test_resources_route
    assert_routing "titles/15", { :controller => "titles", :action => "show", :id => "15" }
  end
end

Answer 3

Your routing unit test file has to include the ActionController::Assertions::RoutingAssertions module since Rails 2.3.2.

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