require 'stringio' require 'uri' require 'action_controller/dispatcher' require 'action_controller/test_process' module ActionController module Integration #:nodoc: # An integration Session instance represents a set of requests and responses # performed sequentially by some virtual user. Becase you can instantiate # multiple sessions and run them side-by-side, you can also mimic (to some # limited extent) multiple simultaneous users interacting with your system. # # Typically, you will instantiate a new session using IntegrationTest#open_session, # rather than instantiating Integration::Session directly. class Session include Test::Unit::Assertions include ActionController::Assertions include ActionController::TestProcess # The integer HTTP status code of the last request. attr_reader :status # The status message that accompanied the status code of the last request. attr_reader :status_message # The URI of the last request. attr_reader :path # The hostname used in the last request. attr_accessor :host # The remote_addr used in the last request. attr_accessor :remote_addr # The Accept header to send. attr_accessor :accept # A map of the cookies returned by the last response, and which will be # sent with the next request. attr_reader :cookies # A map of the headers returned by the last response. attr_reader :headers # A reference to the controller instance used by the last request. attr_reader :controller # A reference to the request instance used by the last request. attr_reader :request # A reference to the response instance used by the last request. attr_reader :response # A running counter of the number of requests processed. attr_accessor :request_count class MultiPartNeededException < Exception end # Create and initialize a new Session instance. def initialize reset! end # Resets the instance. This can be used to reset the state information # in an existing session instance, so it can be used from a clean-slate # condition. # # session.reset! def reset! @status = @path = @headers = nil @result = @status_message = nil @https = false @cookies = {} @controller = @request = @response = nil @request_count = 0 self.host = "www.example.com" self.remote_addr = "127.0.0.1" self.accept = "text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5" unless defined? @named_routes_configured # install the named routes in this session instance. klass = class<application/x-www-form-urlencoded or multipart/form-data). # The headers should be a hash. The keys will automatically be upcased, with the # prefix 'HTTP_' added if needed. # # You can also perform POST, PUT, DELETE, and HEAD requests with +post+, # +put+, +delete+, and +head+. def get(path, parameters = nil, headers = nil) process :get, path, parameters, headers end # Performs a POST request with the given parameters. See get() for more details. def post(path, parameters = nil, headers = nil) process :post, path, parameters, headers end # Performs a PUT request with the given parameters. See get() for more details. def put(path, parameters = nil, headers = nil) process :put, path, parameters, headers end # Performs a DELETE request with the given parameters. See get() for more details. def delete(path, parameters = nil, headers = nil) process :delete, path, parameters, headers end # Performs a HEAD request with the given parameters. See get() for more details. def head(path, parameters = nil, headers = nil) process :head, path, parameters, headers end # Performs an XMLHttpRequest request with the given parameters, mirroring # a request from the Prototype library. # # The request_method is :get, :post, :put, :delete or :head; the # parameters are +nil+, a hash, or a url-encoded or multipart string; # the headers are a hash. Keys are automatically upcased and prefixed # with 'HTTP_' if not already. def xml_http_request(request_method, path, parameters = nil, headers = nil) headers ||= {} headers['X-Requested-With'] = 'XMLHttpRequest' headers['Accept'] ||= 'text/javascript, text/html, application/xml, text/xml, */*' process(request_method, path, parameters, headers) end alias xhr :xml_http_request # Returns the URL for the given options, according to the rules specified # in the application's routes. def url_for(options) controller ? controller.url_for(options) : generic_url_rewriter.rewrite(options) end private class StubCGI < CGI #:nodoc: attr_accessor :stdinput, :stdoutput, :env_table def initialize(env, stdinput = nil) self.env_table = env self.stdoutput = StringIO.new super stdinput.set_encoding(Encoding::BINARY) if stdinput.respond_to?(:set_encoding) stdinput.force_encoding(Encoding::BINARY) if stdinput.respond_to?(:force_encoding) @stdinput = stdinput.is_a?(IO) ? stdinput : StringIO.new(stdinput || '') end end # Tailors the session based on the given URI, setting the HTTPS value # and the hostname. def interpret_uri(path) location = URI.parse(path) https! URI::HTTPS === location if location.scheme host! location.host if location.host location.query ? "#{location.path}?#{location.query}" : location.path end # Performs the actual request. def process(method, path, parameters = nil, headers = nil) data = requestify(parameters) path = interpret_uri(path) if path =~ %r{://} path = "/#{path}" unless path[0] == ?/ @path = path env = {} if method == :get env["QUERY_STRING"] = data data = nil end env.update( "REQUEST_METHOD" => method.to_s.upcase, "REQUEST_URI" => path, "HTTP_HOST" => host, "REMOTE_ADDR" => remote_addr, "SERVER_PORT" => (https? ? "443" : "80"), "CONTENT_TYPE" => "application/x-www-form-urlencoded", "CONTENT_LENGTH" => data ? data.length.to_s : nil, "HTTP_COOKIE" => encode_cookies, "HTTPS" => https? ? "on" : "off", "HTTP_ACCEPT" => accept ) (headers || {}).each do |key, value| key = key.to_s.upcase.gsub(/-/, "_") key = "HTTP_#{key}" unless env.has_key?(key) || key =~ /^HTTP_/ env[key] = value end unless ActionController::Base.respond_to?(:clear_last_instantiation!) ActionController::Base.module_eval { include ControllerCapture } end ActionController::Base.clear_last_instantiation! cgi = StubCGI.new(env, data) ActionController::Dispatcher.dispatch(cgi, ActionController::CgiRequest::DEFAULT_SESSION_OPTIONS, cgi.stdoutput) @result = cgi.stdoutput.string @request_count += 1 @controller = ActionController::Base.last_instantiation @request = @controller.request @response = @controller.response # Decorate the response with the standard behavior of the TestResponse # so that things like assert_response can be used in integration # tests. @response.extend(TestResponseBehavior) @html_document = nil parse_result return status rescue MultiPartNeededException boundary = "----------XnJLe9ZIbbGUYtzPQJ16u1" status = process(method, path, multipart_body(parameters, boundary), (headers || {}).merge({"CONTENT_TYPE" => "multipart/form-data; boundary=#{boundary}"})) return status end # Parses the result of the response and extracts the various values, # like cookies, status, headers, etc. def parse_result response_headers, result_body = @result.split(/\r\n\r\n/, 2) @headers = Hash.new { |h,k| h[k] = [] } response_headers.to_s.each_line do |line| key, value = line.strip.split(/:\s*/, 2) @headers[key.downcase] << value end (@headers['set-cookie'] || [] ).each do |string| name, value = string.match(/^([^=]*)=([^;]*);/)[1,2] @cookies[name] = value end @status, @status_message = @headers["status"].first.to_s.split(/ /) @status = @status.to_i end # Encode the cookies hash in a format suitable for passing to a # request. def encode_cookies cookies.inject("") do |string, (name, value)| string << "#{name}=#{value}; " end end # Get a temporary URL writer object def generic_url_rewriter cgi = StubCGI.new('REQUEST_METHOD' => "GET", 'QUERY_STRING' => "", "REQUEST_URI" => "/", "HTTP_HOST" => host, "SERVER_PORT" => https? ? "443" : "80", "HTTPS" => https? ? "on" : "off") ActionController::UrlRewriter.new(ActionController::CgiRequest.new(cgi), {}) end def name_with_prefix(prefix, name) prefix ? "#{prefix}[#{name}]" : name.to_s end # Convert the given parameters to a request string. The parameters may # be a string, +nil+, or a Hash. def requestify(parameters, prefix=nil) if TestUploadedFile === parameters raise MultiPartNeededException elsif Hash === parameters return nil if parameters.empty? parameters.map { |k,v| requestify(v, name_with_prefix(prefix, k)) }.join("&") elsif Array === parameters parameters.map { |v| requestify(v, name_with_prefix(prefix, "")) }.join("&") elsif prefix.nil? parameters else "#{CGI.escape(prefix)}=#{CGI.escape(parameters.to_s)}" end end def multipart_requestify(params, first=true) returning Hash.new do |p| params.each do |key, value| k = first ? CGI.escape(key.to_s) : "[#{CGI.escape(key.to_s)}]" if Hash === value multipart_requestify(value, false).each do |subkey, subvalue| p[k + subkey] = subvalue end else p[k] = value end end end end def multipart_body(params, boundary) multipart_requestify(params).map do |key, value| if value.respond_to?(:original_filename) File.open(value.path) do |f| f.set_encoding(Encoding::BINARY) if f.respond_to?(:set_encoding) <<-EOF --#{boundary}\r Content-Disposition: form-data; name="#{key}"; filename="#{CGI.escape(value.original_filename)}"\r Content-Type: #{value.content_type}\r Content-Length: #{File.stat(value.path).size}\r \r #{f.read}\r EOF end else <<-EOF --#{boundary}\r Content-Disposition: form-data; name="#{key}"\r \r #{value}\r EOF end end.join("")+"--#{boundary}--\r" end end # A module used to extend ActionController::Base, so that integration tests # can capture the controller used to satisfy a request. module ControllerCapture #:nodoc: def self.included(base) base.extend(ClassMethods) base.class_eval do class << self alias_method_chain :new, :capture end end end module ClassMethods #:nodoc: mattr_accessor :last_instantiation def clear_last_instantiation! self.last_instantiation = nil end def new_with_capture(*args) controller = new_without_capture(*args) self.last_instantiation ||= controller controller end end end module Runner # Reset the current session. This is useful for testing multiple sessions # in a single test case. def reset! @integration_session = open_session end %w(get post put head delete cookies assigns xml_http_request get_via_redirect post_via_redirect).each do |method| define_method(method) do |*args| reset! unless @integration_session # reset the html_document variable, but only for new get/post calls @html_document = nil unless %w(cookies assigns).include?(method) returning @integration_session.send!(method, *args) do copy_session_variables! end end end # Open a new session instance. If a block is given, the new session is # yielded to the block before being returned. # # session = open_session do |sess| # sess.extend(CustomAssertions) # end # # By default, a single session is automatically created for you, but you # can use this method to open multiple sessions that ought to be tested # simultaneously. def open_session session = Integration::Session.new # delegate the fixture accessors back to the test instance extras = Module.new { attr_accessor :delegate, :test_result } if self.class.respond_to?(:fixture_table_names) self.class.fixture_table_names.each do |table_name| name = table_name.tr(".", "_") next unless respond_to?(name) extras.send!(:define_method, name) { |*args| delegate.send(name, *args) } end end # delegate add_assertion to the test case extras.send!(:define_method, :add_assertion) { test_result.add_assertion } session.extend(extras) session.delegate = self session.test_result = @_result yield session if block_given? session end # Copy the instance variables from the current session instance into the # test instance. def copy_session_variables! #:nodoc: return unless @integration_session %w(controller response request).each do |var| instance_variable_set("@#{var}", @integration_session.send!(var)) end end # Delegate unhandled messages to the current session instance. def method_missing(sym, *args, &block) reset! unless @integration_session returning @integration_session.send!(sym, *args, &block) do copy_session_variables! end end end end # An IntegrationTest is one that spans multiple controllers and actions, # tying them all together to ensure they work together as expected. It tests # more completely than either unit or functional tests do, exercising the # entire stack, from the dispatcher to the database. # # At its simplest, you simply extend IntegrationTest and write your tests # using the get/post methods: # # require "#{File.dirname(__FILE__)}/test_helper" # # class ExampleTest < ActionController::IntegrationTest # fixtures :people # # def test_login # # get the login page # get "/login" # assert_equal 200, status # # # post the login and follow through to the home page # post "/login", :username => people(:jamis).username, # :password => people(:jamis).password # follow_redirect! # assert_equal 200, status # assert_equal "/home", path # end # end # # However, you can also have multiple session instances open per test, and # even extend those instances with assertions and methods to create a very # powerful testing DSL that is specific for your application. You can even # reference any named routes you happen to have defined! # # require "#{File.dirname(__FILE__)}/test_helper" # # class AdvancedTest < ActionController::IntegrationTest # fixtures :people, :rooms # # def test_login_and_speak # jamis, david = login(:jamis), login(:david) # room = rooms(:office) # # jamis.enter(room) # jamis.speak(room, "anybody home?") # # david.enter(room) # david.speak(room, "hello!") # end # # private # # module CustomAssertions # def enter(room) # # reference a named route, for maximum internal consistency! # get(room_url(:id => room.id)) # assert(...) # ... # end # # def speak(room, message) # xml_http_request "/say/#{room.id}", :message => message # assert(...) # ... # end # end # # def login(who) # open_session do |sess| # sess.extend(CustomAssertions) # who = people(who) # sess.post "/login", :username => who.username, # :password => who.password # assert(...) # end # end # end class IntegrationTest < Test::Unit::TestCase include Integration::Runner # Work around a bug in test/unit caused by the default test being named # as a symbol (:default_test), which causes regex test filters # (like "ruby test.rb -n /foo/") to fail because =~ doesn't work on # symbols. def initialize(name) #:nodoc: super(name.to_s) end # Work around test/unit's requirement that every subclass of TestCase have # at least one test method. Note that this implementation extends to all # subclasses, as well, so subclasses of IntegrationTest may also exist # without any test methods. def run(*args) #:nodoc: return if @method_name == "default_test" super end # Because of how use_instantiated_fixtures and use_transactional_fixtures # are defined, we need to treat them as special cases. Otherwise, users # would potentially have to set their values for both Test::Unit::TestCase # ActionController::IntegrationTest, since by the time the value is set on # TestCase, IntegrationTest has already been defined and cannot inherit # changes to those variables. So, we make those two attributes copy-on-write. class << self def use_transactional_fixtures=(flag) #:nodoc: @_use_transactional_fixtures = true @use_transactional_fixtures = flag end def use_instantiated_fixtures=(flag) #:nodoc: @_use_instantiated_fixtures = true @use_instantiated_fixtures = flag end def use_transactional_fixtures #:nodoc: @_use_transactional_fixtures ? @use_transactional_fixtures : superclass.use_transactional_fixtures end def use_instantiated_fixtures #:nodoc: @_use_instantiated_fixtures ? @use_instantiated_fixtures : superclass.use_instantiated_fixtures end end end end