build_request_uri

# File actionpack/lib/action_controller/test_case.rb, line 716 def build_request_uri(action, parameters) unless @request.env["PATH_INFO"] options = @controller.respond_to?(:url_options) ? @controller.__send__(:url_options).merge(parameters) : parameters options.update( :action => action, :relative_url_root => nil, :_recall => @request.path_parameters) if route_name = options.delete(:use_route) ActiveSupport::Deprecation.warn Passing the `use_route` option in functional tests are deprecated. Support for this option in the `process` method (and the related `get`, `head`, `post`, `patch`, `put` and `delete` helpers) will be removed in the next version without replacement. Functional tests are essentially unit tests for controllers and they should not require knowledge to how the application's routes are configured. Instead, you should explicitly pass the appropiate params to the `process` method. Previously the engines guide also contained an incorrect example that recommended using this option to test an engine's controllers within the dummy application. That recommendation was incorrect and has since been corrected. Instead, you should override the `@routes` variable in the test case with `Foo::Engine.routes`. See the updated engines guide for details..squish end url, query_string = @routes.path_for(options, route_name).split("?", 2) @request.env["SCRIPT_NAME"] = @controller.config.relative_url_root @request.env["PATH_INFO"] = url @request.env["QUERY_STRING"] = query_string || "" end end