require 'uri' require 'active_support/core_ext/hash/indifferent_access' require 'action_controller/metal/exceptions' module ActionDispatch module Assertions # Suite of assertions to test routes generated by \Rails and the handling of requests made to them. module RoutingAssertions # Asserts that the routing of the given +path+ was handled correctly and that the parsed options (given in the +expected_options+ hash) # match +path+. Basically, it asserts that \Rails recognizes the route given by +expected_options+. # # Pass a hash in the second argument (+path+) 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" }) # # The +message+ parameter allows you to pass in an error message that is displayed upon failure. # # # Check the default route (i.e., the index action) # assert_recognizes({controller: 'items', action: 'index'}, 'items') # # # Test a specific action # assert_recognizes({controller: 'items', action: 'list'}, 'items/list') # # # Test an action with a parameter # assert_recognizes({controller: 'items', action: 'destroy', id: '1'}, 'items/destroy/1') # # # Test a custom route # assert_recognizes({controller: 'items', action: 'show', id: '1'}, 'view/item1') def assert_recognizes(expected_options, path, extras={}, msg=nil) request = recognized_request_for(path, extras) expected_options = expected_options.clone expected_options.stringify_keys! msg = message(msg, "") { sprintf("The recognized options <%s> did not match <%s>, difference:", request.path_parameters, expected_options) } assert_equal(expected_options, request.path_parameters, msg) end # Asserts that the provided options can be used to generate the provided path. This is the inverse of +assert_recognizes+. # The +extras+ parameter is used to tell the request the names and values of additional request parameters that would be in # a query string. The +message+ parameter allows you to specify a custom error message for assertion failures. # # The +defaults+ parameter is unused. # # # Asserts that the default action is generated for a route with no action # assert_generates "/items", controller: "items", action: "index" # # # Tests that the list action is properly routed # assert_generates "/items/list", controller: "items", action: "list" # # # Tests the generation of a route with a parameter # assert_generates "/items/list/1", { controller: "items", action: "list", id: "1" } # # # Asserts that the generated route gives us our custom route # assert_generates "changesets/12", { controller: 'scm', action: 'show_diff', revision: "12" } def assert_generates(expected_path, options, defaults={}, extras = {}, message=nil) if expected_path =~ %r{://} fail_on(URI::InvalidURIError) do uri = URI.parse(expected_path) expected_path = uri.path.to_s.empty? ? "/" : uri.path end else expected_path = "/#{expected_path}" unless expected_path.first == '/' end # Load routes.rb if it hasn't been loaded. generated_path, extra_keys = @routes.generate_extras(options, defaults) found_extras = options.reject {|k, v| ! extra_keys.include? k} msg = message || sprintf("found extras <%s>, not <%s>", found_extras, extras) assert_equal(extras, found_extras, msg) msg = message || sprintf("The generated path <%s> did not match <%s>", generated_path, expected_path) assert_equal(expected_path, generated_path, msg) end # Asserts that path and options match both ways; in other words, it verifies that path generates # options and then that options generates path. This essentially combines +assert_recognizes+ # and +assert_generates+ into one step. # # The +extras+ hash allows you to specify options that would normally be provided as a query string to the action. The # +message+ parameter allows you to specify a custom error message to display upon failure. # # # Assert a basic route: a controller with the default action (index) # assert_routing '/home', controller: 'home', action: 'index' # # # Test a route generated with a specific controller, action, and parameter (id) # assert_routing '/entries/show/23', controller: 'entries', action: 'show', id: 23 # # # Assert a basic route (controller + default action), with an error message if it fails # assert_routing '/store', { controller: 'store', action: 'index' }, {}, {}, 'Route for store index not generated properly' # # # Tests a route, providing a defaults hash # assert_routing 'controller/action/9', {id: "9", item: "square"}, {controller: "controller", action: "action"}, {}, {item: "square"} # # # Tests a route with a HTTP method # assert_routing({ method: 'put', path: '/product/321' }, { controller: "product", action: "update", id: "321" }) 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}" end generate_options = options.dup.delete_if{ |k,v| defaults.key?(k) } assert_generates(path.is_a?(Hash) ? path[:path] : path, generate_options, defaults, extras, message) end # A helper to make it easier to test different route configurations. # This method temporarily replaces @routes # with a new RouteSet instance. # # The new instance is yielded to the passed block. Typically the block # will create some routes using set.draw { match ... }: # # with_routing do |set| # set.draw do # resources :users # end # assert_equal "/users", users_path # end # def with_routing old_routes, @routes = @routes, ActionDispatch::Routing::RouteSet.new if defined?(@controller) && @controller old_controller, @controller = @controller, @controller.clone _routes = @routes # Unfortunately, there is currently an abstraction leak between AC::Base # and AV::Base which requires having the URL helpers in both AC and AV. # To do this safely at runtime for tests, we need to bump up the helper serial # to that the old AV subclass isn't cached. # # TODO: Make this unnecessary @controller.singleton_class.send(:include, _routes.url_helpers) @controller.view_context_class = Class.new(@controller.view_context_class) do include _routes.url_helpers end end yield @routes ensure @routes = old_routes if defined?(@controller) && @controller @controller = old_controller end end # ROUTES TODO: These assertions should really work in an integration context def method_missing(selector, *args, &block) if defined?(@controller) && @controller && @routes && @routes.named_routes.helpers.include?(selector) @controller.send(selector, *args, &block) else super end end private # Recognizes the route for a given path. def recognized_request_for(path, extras = {}) if path.is_a?(Hash) method = path[:method] path = path[:path] else method = :get end # Assume given controller request = ActionController::TestRequest.new if path =~ %r{://} fail_on(URI::InvalidURIError) do uri = URI.parse(path) request.env["rack.url_scheme"] = uri.scheme || "http" request.host = uri.host if uri.host request.port = uri.port if uri.port request.path = uri.path.to_s.empty? ? "/" : uri.path end else path = "/#{path}" unless path.first == "/" request.path = path end request.request_method = method if method params = fail_on(ActionController::RoutingError) do @routes.recognize_path(path, { :method => method, :extras => extras }) end request.path_parameters = params.with_indifferent_access request end def fail_on(exception_class) begin yield rescue exception_class => e raise MiniTest::Assertion, e.message end end end end end