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module ActionController
module Assertions
module RoutingAssertions
# Asserts that the routing of the given path was handled correctly and that the parsed options match.
# assert_recognizes({:controller => 'items', :action => 'index'}, 'items') # check the default action
# assert_recognizes({:controller => 'items', :action => 'list'}, 'items/list') # check a specific action
# assert_recognizes({:controller => 'items', :action => 'list', :id => '1'}, 'items/list/1') # check an action with a parameter
# Pass a hash in the second argument to specify the request method. This is useful for routes
# requiring a specific HTTP method. The hash should contain a :path with the incoming request path
# and a :method containing the required HTTP verb.
# # assert that POSTing to /items will call the create action on ItemsController
# assert_recognizes({:controller => 'items', :action => 'create'}, {:path => 'items', :method => :post})
# You can also pass in "extras" with a hash containing URL parameters that would normally be in the query string. This can be used
# to assert that values in the query string string will end up in the params hash correctly. To test query strings you must use the
# extras argument, appending the query string on the path directly will not work. For example:
# # assert that a path of '/items/list/1?view=print' returns the correct options
# assert_recognizes({:controller => 'items', :action => 'list', :id => '1', :view => 'print'}, 'items/list/1', { :view => "print" })
def assert_recognizes(expected_options, path, extras={}, message=nil)
if path.is_a? Hash
request_method = path[:method]
path = path[:path]
request_method = nil
clean_backtrace do
ActionController::Routing::Routes.reload if ActionController::Routing::Routes.empty?
request = recognized_request_for(path, request_method)
expected_options = expected_options.clone
extras.each_key { |key| expected_options.delete key } unless extras.nil?
routing_diff = expected_options.diff(request.path_parameters)
msg = build_message(message, "The recognized options <?> did not match <?>, difference: <?>",
request.path_parameters, expected_options, expected_options.diff(request.path_parameters))
assert_block(msg) { request.path_parameters == expected_options }
# Asserts that the provided options can be used to generate the provided path. This is the inverse of assert_recognizes.
# For example:
# assert_generates("/items", :controller => "items", :action => "index")
# assert_generates("/items/list", :controller => "items", :action => "list")
# assert_generates("/items/list/1", { :controller => "items", :action => "list", :id => "1" })
def assert_generates(expected_path, options, defaults={}, extras = {}, message=nil)
clean_backtrace do
expected_path = "/#{expected_path}" unless expected_path[0] == ?/
# Load routes.rb if it hasn't been loaded.
ActionController::Routing::Routes.reload if ActionController::Routing::Routes.empty?
generated_path, extra_keys = ActionController::Routing::Routes.generate_extras(options, defaults)
found_extras = options.reject {|k, v| ! extra_keys.include? k}
msg = build_message(message, "found extras <?>, not <?>", found_extras, extras)
assert_block(msg) { found_extras == extras }
msg = build_message(message, "The generated path <?> did not match <?>", generated_path,
assert_block(msg) { expected_path == generated_path }
# Asserts that path and options match both ways; in other words, the URL generated from
# options is the same as path, and also that the options recognized from path are the same as options. This
# essentially combines assert_recognizes and assert_generates into one step.
def assert_routing(path, options, defaults={}, extras={}, message=nil)
assert_recognizes(options, path, extras, message)
controller, default_controller = options[:controller], defaults[:controller]
if controller && controller.include?(?/) && default_controller && default_controller.include?(?/)
options[:controller] = "/#{controller}"
assert_generates(path, options, defaults, extras, message)
def recognized_request_for(path, request_method = nil)
path = "/#{path}" unless path.first == '/'
# Assume given controller
request ={}, {}, nil)
request.env["REQUEST_METHOD"] = request_method.to_s.upcase if request_method
request.path = path
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