require 'rack/session/abstract/id' require 'active_support/core_ext/object/to_query' require 'active_support/core_ext/module/anonymous' require 'active_support/core_ext/hash/keys' require 'rails-dom-testing' module ActionController module TemplateAssertions extend ActiveSupport::Concern included do setup :setup_subscriptions teardown :teardown_subscriptions end RENDER_TEMPLATE_INSTANCE_VARIABLES = %w{partials templates layouts files}.freeze def setup_subscriptions RENDER_TEMPLATE_INSTANCE_VARIABLES.each do |instance_variable| instance_variable_set("@_#{instance_variable}", Hash.new(0)) end @_subscribers = [] @_subscribers << ActiveSupport::Notifications.subscribe("render_template.action_view") do |_name, _start, _finish, _id, payload| path = payload[:layout] if path @_layouts[path] += 1 if path =~ /^layouts\/(.*)/ @_layouts[$1] += 1 end end end @_subscribers << ActiveSupport::Notifications.subscribe("!render_template.action_view") do |_name, _start, _finish, _id, payload| if virtual_path = payload[:virtual_path] partial = virtual_path =~ /^.*\/_[^\/]*$/ if partial @_partials[virtual_path] += 1 @_partials[virtual_path.split("/").last] += 1 end @_templates[virtual_path] += 1 else path = payload[:identifier] if path @_files[path] += 1 @_files[path.split("/").last] += 1 end end end end def teardown_subscriptions @_subscribers.each do |subscriber| ActiveSupport::Notifications.unsubscribe(subscriber) end end def process(*args) reset_template_assertion super end def reset_template_assertion RENDER_TEMPLATE_INSTANCE_VARIABLES.each do |instance_variable| ivar_name = "@_#{instance_variable}" if instance_variable_defined?(ivar_name) instance_variable_get(ivar_name).clear end end end # Asserts that the request was rendered with the appropriate template file or partials. # # # assert that the "new" view template was rendered # assert_template "new" # # # assert that the exact template "admin/posts/new" was rendered # assert_template %r{\Aadmin/posts/new\Z} # # # assert that the layout 'admin' was rendered # assert_template layout: 'admin' # assert_template layout: 'layouts/admin' # assert_template layout: :admin # # # assert that no layout was rendered # assert_template layout: nil # assert_template layout: false # # # assert that the "_customer" partial was rendered twice # assert_template partial: '_customer', count: 2 # # # assert that no partials were rendered # assert_template partial: false # # # assert that a file was rendered # assert_template file: "README.rdoc" # # # assert that no file was rendered # assert_template file: nil # assert_template file: false # # In a view test case, you can also assert that specific locals are passed # to partials: # # # assert that the "_customer" partial was rendered with a specific object # assert_template partial: '_customer', locals: { customer: @customer } def assert_template(options = {}, message = nil) # Force body to be read in case the template is being streamed. response.body case options when NilClass, Regexp, String, Symbol options = options.to_s if Symbol === options rendered = @_templates msg = message || sprintf("expecting <%s> but rendering with <%s>", options.inspect, rendered.keys) matches_template = case options when String !options.empty? && rendered.any? do |t, num| options_splited = options.split(File::SEPARATOR) t_splited = t.split(File::SEPARATOR) t_splited.last(options_splited.size) == options_splited end when Regexp rendered.any? { |t,num| t.match(options) } when NilClass rendered.blank? end assert matches_template, msg when Hash options.assert_valid_keys(:layout, :partial, :locals, :count, :file) if options.key?(:layout) expected_layout = options[:layout] msg = message || sprintf("expecting layout <%s> but action rendered <%s>", expected_layout, @_layouts.keys) case expected_layout when String, Symbol assert_includes @_layouts.keys, expected_layout.to_s, msg when Regexp assert(@_layouts.keys.any? {|l| l =~ expected_layout }, msg) when nil, false assert(@_layouts.empty?, msg) else raise ArgumentError, "assert_template only accepts a String, Symbol, Regexp, nil or false for :layout" end end if options[:file] assert_includes @_files.keys, options[:file] elsif options.key?(:file) assert @_files.blank?, "expected no files but #{@_files.keys} was rendered" end if expected_partial = options[:partial] if expected_locals = options[:locals] if defined?(@_rendered_views) view = expected_partial.to_s.sub(/^_/, '').sub(/\/_(?=[^\/]+\z)/, '/') partial_was_not_rendered_msg = "expected %s to be rendered but it was not." % view assert_includes @_rendered_views.rendered_views, view, partial_was_not_rendered_msg msg = 'expecting %s to be rendered with %s but was with %s' % [expected_partial, expected_locals, @_rendered_views.locals_for(view)] assert(@_rendered_views.view_rendered?(view, options[:locals]), msg) else warn "the :locals option to #assert_template is only supported in a ActionView::TestCase" end elsif expected_count = options[:count] actual_count = @_partials[expected_partial] msg = message || sprintf("expecting %s to be rendered %s time(s) but rendered %s time(s)", expected_partial, expected_count, actual_count) assert(actual_count == expected_count.to_i, msg) else msg = message || sprintf("expecting partial <%s> but action rendered <%s>", options[:partial], @_partials.keys) assert_includes @_partials, expected_partial, msg end elsif options.key?(:partial) assert @_partials.empty?, "Expected no partials to be rendered" end else raise ArgumentError, "assert_template only accepts a String, Symbol, Hash, Regexp, or nil" end end end class TestRequest < ActionDispatch::TestRequest #:nodoc: DEFAULT_ENV = ActionDispatch::TestRequest::DEFAULT_ENV.dup DEFAULT_ENV.delete 'PATH_INFO' def initialize(env = {}) super self.session = TestSession.new self.session_options = TestSession::DEFAULT_OPTIONS.merge(:id => SecureRandom.hex(16)) end def assign_parameters(routes, controller_path, action, parameters = {}) parameters = parameters.symbolize_keys.merge(:controller => controller_path, :action => action) extra_keys = routes.extra_keys(parameters) non_path_parameters = get? ? query_parameters : request_parameters parameters.each do |key, value| if value.is_a?(Array) && (value.frozen? || value.any?(&:frozen?)) value = value.map{ |v| v.duplicable? ? v.dup : v } elsif value.is_a?(Hash) && (value.frozen? || value.any?{ |k,v| v.frozen? }) value = Hash[value.map{ |k,v| [k, v.duplicable? ? v.dup : v] }] elsif value.frozen? && value.duplicable? value = value.dup end if extra_keys.include?(key) non_path_parameters[key] = value else if value.is_a?(Array) value = value.map(&:to_param) else value = value.to_param end path_parameters[key] = value end end # Clear the combined params hash in case it was already referenced. @env.delete("action_dispatch.request.parameters") # Clear the filter cache variables so they're not stale @filtered_parameters = @filtered_env = @filtered_path = nil params = self.request_parameters.dup %w(controller action only_path).each do |k| params.delete(k) params.delete(k.to_sym) end data = params.to_query @env['CONTENT_LENGTH'] = data.length.to_s @env['rack.input'] = StringIO.new(data) end def recycle! @formats = nil @env.delete_if { |k, v| k =~ /^(action_dispatch|rack)\.request/ } @env.delete_if { |k, v| k =~ /^action_dispatch\.rescue/ } @method = @request_method = nil @fullpath = @ip = @remote_ip = @protocol = nil @env['action_dispatch.request.query_parameters'] = {} @set_cookies ||= {} @set_cookies.update(Hash[cookie_jar.instance_variable_get("@set_cookies").map{ |k,o| [k,o[:value]] }]) deleted_cookies = cookie_jar.instance_variable_get("@delete_cookies") @set_cookies.reject!{ |k,v| deleted_cookies.include?(k) } cookie_jar.update(rack_cookies) cookie_jar.update(cookies) cookie_jar.update(@set_cookies) cookie_jar.recycle! end private def default_env DEFAULT_ENV end end class TestResponse < ActionDispatch::TestResponse def recycle! initialize end end class LiveTestResponse < Live::Response def recycle! @body = nil initialize end def body @body ||= super end # Was the response successful? alias_method :success?, :successful? # Was the URL not found? alias_method :missing?, :not_found? # Were we redirected? alias_method :redirect?, :redirection? # Was there a server-side error? alias_method :error?, :server_error? end # Methods #destroy and #load! are overridden to avoid calling methods on the # @store object, which does not exist for the TestSession class. class TestSession < Rack::Session::Abstract::SessionHash #:nodoc: DEFAULT_OPTIONS = Rack::Session::Abstract::ID::DEFAULT_OPTIONS def initialize(session = {}) super(nil, nil) @id = SecureRandom.hex(16) @data = stringify_keys(session) @loaded = true end def exists? true end def keys @data.keys end def values @data.values end def destroy clear end private def load! @id end end # Superclass for ActionController functional tests. Functional tests allow you to # test a single controller action per test method. This should not be confused with # integration tests (see ActionDispatch::IntegrationTest), which are more like # "stories" that can involve multiple controllers and multiple actions (i.e. multiple # different HTTP requests). # # == Basic example # # Functional tests are written as follows: # 1. First, one uses the +get+, +post+, +patch+, +put+, +delete+ or +head+ method to simulate # an HTTP request. # 2. Then, one asserts whether the current state is as expected. "State" can be anything: # the controller's HTTP response, the database contents, etc. # # For example: # # class BooksControllerTest < ActionController::TestCase # def test_create # # Simulate a POST response with the given HTTP parameters. # post(:create, book: { title: "Love Hina" }) # # # Assert that the controller tried to redirect us to # # the created book's URI. # assert_response :found # # # Assert that the controller really put the book in the database. # assert_not_nil Book.find_by(title: "Love Hina") # end # end # # You can also send a real document in the simulated HTTP request. # # def test_create # json = {book: { title: "Love Hina" }}.to_json # post :create, json # end # # == Special instance variables # # ActionController::TestCase will also automatically provide the following instance # variables for use in the tests: # # @controller:: # The controller instance that will be tested. # @request:: # An ActionController::TestRequest, representing the current HTTP # request. You can modify this object before sending the HTTP request. For example, # you might want to set some session properties before sending a GET request. # @response:: # An ActionController::TestResponse object, representing the response # of the last HTTP response. In the above example, @response becomes valid # after calling +post+. If the various assert methods are not sufficient, then you # may use this object to inspect the HTTP response in detail. # # (Earlier versions of \Rails required each functional test to subclass # Test::Unit::TestCase and define @controller, @request, @response in +setup+.) # # == Controller is automatically inferred # # ActionController::TestCase will automatically infer the controller under test # from the test class name. If the controller cannot be inferred from the test # class name, you can explicitly set it with +tests+. # # class SpecialEdgeCaseWidgetsControllerTest < ActionController::TestCase # tests WidgetController # end # # == \Testing controller internals # # In addition to these specific assertions, you also have easy access to various collections that the regular test/unit assertions # can be used against. These collections are: # # * assigns: Instance variables assigned in the action that are available for the view. # * session: Objects being saved in the session. # * flash: The flash objects currently in the session. # * cookies: \Cookies being sent to the user on this request. # # These collections can be used just like any other hash: # # assert_not_nil assigns(:person) # makes sure that a @person instance variable was set # assert_equal "Dave", cookies[:name] # makes sure that a cookie called :name was set as "Dave" # assert flash.empty? # makes sure that there's nothing in the flash # # For historic reasons, the assigns hash uses string-based keys. So assigns[:person] won't work, but assigns["person"] will. To # appease our yearning for symbols, though, an alternative accessor has been devised using a method call instead of index referencing. # So assigns(:person) will work just like assigns["person"], but again, assigns[:person] will not work. # # On top of the collections, you have the complete url that a given action redirected to available in redirect_to_url. # # For redirects within the same controller, you can even call follow_redirect and the redirect will be followed, triggering another # action call which can then be asserted against. # # == Manipulating session and cookie variables # # Sometimes you need to set up the session and cookie variables for a test. # To do this just assign a value to the session or cookie collection: # # session[:key] = "value" # cookies[:key] = "value" # # To clear the cookies for a test just clear the cookie collection: # # cookies.clear # # == \Testing named routes # # If you're using named routes, they can be easily tested using the original named routes' methods straight in the test case. # # assert_redirected_to page_url(title: 'foo') class TestCase < ActiveSupport::TestCase module Behavior extend ActiveSupport::Concern include ActionDispatch::TestProcess include ActiveSupport::Testing::ConstantLookup include Rails::Dom::Testing::Assertions attr_reader :response, :request module ClassMethods # Sets the controller class name. Useful if the name can't be inferred from test class. # Normalizes +controller_class+ before using. # # tests WidgetController # tests :widget # tests 'widget' def tests(controller_class) case controller_class when String, Symbol self.controller_class = "#{controller_class.to_s.camelize}Controller".constantize when Class self.controller_class = controller_class else raise ArgumentError, "controller class must be a String, Symbol, or Class" end end def controller_class=(new_class) self._controller_class = new_class end def controller_class if current_controller_class = self._controller_class current_controller_class else self.controller_class = determine_default_controller_class(name) end end def determine_default_controller_class(name) determine_constant_from_test_name(name) do |constant| Class === constant && constant < ActionController::Metal end end end # Simulate a GET request with the given parameters. # # - +action+: The controller action to call. # - +parameters+: The HTTP parameters that you want to pass. This may # be +nil+, a hash, or a string that is appropriately encoded # (application/x-www-form-urlencoded or multipart/form-data). # - +session+: A hash of parameters to store in the session. This may be +nil+. # - +flash+: A hash of parameters to store in the flash. This may be +nil+. # # You can also simulate POST, PATCH, PUT, DELETE, and HEAD requests with # +post+, +patch+, +put+, +delete+, and +head+. # # Note that the request method is not verified. The different methods are # available to make the tests more expressive. def get(action, *args) process(action, "GET", *args) end # Simulate a POST request with the given parameters and set/volley the response. # See +get+ for more details. def post(action, *args) process(action, "POST", *args) end # Simulate a PATCH request with the given parameters and set/volley the response. # See +get+ for more details. def patch(action, *args) process(action, "PATCH", *args) end # Simulate a PUT request with the given parameters and set/volley the response. # See +get+ for more details. def put(action, *args) process(action, "PUT", *args) end # Simulate a DELETE request with the given parameters and set/volley the response. # See +get+ for more details. def delete(action, *args) process(action, "DELETE", *args) end # Simulate a HEAD request with the given parameters and set/volley the response. # See +get+ for more details. def head(action, *args) process(action, "HEAD", *args) end def xml_http_request(request_method, action, parameters = nil, session = nil, flash = nil) @request.env['HTTP_X_REQUESTED_WITH'] = 'XMLHttpRequest' @request.env['HTTP_ACCEPT'] ||= [Mime::JS, Mime::HTML, Mime::XML, 'text/xml', Mime::ALL].join(', ') __send__(request_method, action, parameters, session, flash).tap do @request.env.delete 'HTTP_X_REQUESTED_WITH' @request.env.delete 'HTTP_ACCEPT' end end alias xhr :xml_http_request def paramify_values(hash_or_array_or_value) case hash_or_array_or_value when Hash Hash[hash_or_array_or_value.map{|key, value| [key, paramify_values(value)] }] when Array hash_or_array_or_value.map {|i| paramify_values(i)} when Rack::Test::UploadedFile, ActionDispatch::Http::UploadedFile hash_or_array_or_value else hash_or_array_or_value.to_param end end # Simulate a HTTP request to +action+ by specifying request method, # parameters and set/volley the response. # # - +action+: The controller action to call. # - +http_method+: Request method used to send the http request. Possible values # are +GET+, +POST+, +PATCH+, +PUT+, +DELETE+, +HEAD+. Defaults to +GET+. # - +parameters+: The HTTP parameters. This may be +nil+, a hash, or a # string that is appropriately encoded (+application/x-www-form-urlencoded+ # or +multipart/form-data+). # - +session+: A hash of parameters to store in the session. This may be +nil+. # - +flash+: A hash of parameters to store in the flash. This may be +nil+. # # Example calling +create+ action and sending two params: # # process :create, 'POST', user: { name: 'Gaurish Sharma', email: 'user@example.com' } # # Example sending parameters, +nil+ session and setting a flash message: # # process :view, 'GET', { id: 7 }, nil, { notice: 'This is flash message' } # # To simulate +GET+, +POST+, +PATCH+, +PUT+, +DELETE+ and +HEAD+ requests # prefer using #get, #post, #patch, #put, #delete and #head methods # respectively which will make tests more expressive. # # Note that the request method is not verified. def process(action, http_method = 'GET', *args) check_required_ivars if args.first.is_a?(String) && http_method != 'HEAD' @request.env['RAW_POST_DATA'] = args.shift end parameters, session, flash = args parameters ||= {} # Ensure that numbers and symbols passed as params are converted to # proper params, as is the case when engaging rack. parameters = paramify_values(parameters) if html_format?(parameters) @html_document = nil unless @controller.respond_to?(:recycle!) @controller.extend(Testing::Functional) end @request.recycle! @response.recycle! @controller.recycle! @request.env['REQUEST_METHOD'] = http_method controller_class_name = @controller.class.anonymous? ? "anonymous" : @controller.class.controller_path @request.assign_parameters(@routes, controller_class_name, action.to_s, parameters) @request.session.update(session) if session @request.flash.update(flash || {}) @controller.request = @request @controller.response = @response build_request_uri(action, parameters) name = @request.parameters[:action] @controller.recycle! @controller.process(name) if cookies = @request.env['action_dispatch.cookies'] unless @response.committed? cookies.write(@response) end end @response.prepare! @assigns = @controller.respond_to?(:view_assigns) ? @controller.view_assigns : {} if flash_value = @request.flash.to_session_value @request.session['flash'] = flash_value end @response end def setup_controller_request_and_response @controller = nil unless defined? @controller response_klass = TestResponse if klass = self.class.controller_class if klass < ActionController::Live response_klass = LiveTestResponse end unless @controller begin @controller = klass.new rescue warn "could not construct controller #{klass}" if $VERBOSE end end end @request = build_request @response = build_response response_klass @response.request = @request if @controller @controller.request = @request @controller.params = {} end end def build_request TestRequest.new end def build_response(klass) klass.new end included do include ActionController::TemplateAssertions include ActionDispatch::Assertions class_attribute :_controller_class setup :setup_controller_request_and_response end private def document_root_element html_document.root end def check_required_ivars # Sanity check for required instance variables so we can give an # understandable error message. [:@routes, :@controller, :@request, :@response].each do |iv_name| if !instance_variable_defined?(iv_name) || instance_variable_get(iv_name).nil? raise "#{iv_name} is nil: make sure you set it in your test's setup method." end end end 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) url, query_string = @routes.path_for(options).split("?", 2) @request.env["SCRIPT_NAME"] = @controller.config.relative_url_root @request.env["PATH_INFO"] = url @request.env["QUERY_STRING"] = query_string || "" end end def html_format?(parameters) return true unless parameters.key?(:format) Mime.fetch(parameters[:format]) { Mime['html'] }.html? end end include Behavior end end