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Diffstat (limited to 'actionpack/lib/action_controller/test_case.rb')
| -rw-r--r-- | actionpack/lib/action_controller/test_case.rb | 348 |
1 files changed, 348 insertions, 0 deletions
diff --git a/actionpack/lib/action_controller/test_case.rb b/actionpack/lib/action_controller/test_case.rb new file mode 100644 index 0000000000..7533a22299 --- /dev/null +++ b/actionpack/lib/action_controller/test_case.rb @@ -0,0 +1,348 @@ +require 'active_support/test_case' +require 'rack/session/abstract/id' +require 'action_controller/metal/testing' +require 'action_controller/testing/process' +require 'action_dispatch/test_case' + +module ActionController + class TestRequest < ActionDispatch::TestRequest #:nodoc: + def initialize(env = {}) + super + + self.session = TestSession.new + self.session_options = TestSession::DEFAULT_OPTIONS.merge(:id => ActiveSupport::SecureRandom.hex(16)) + end + + class Result < ::Array #:nodoc: + def to_s() join '/' end + def self.new_escaped(strings) + new strings.collect {|str| URI.unescape str} + end + end + + def assign_parameters(controller_path, action, parameters = {}) + parameters = parameters.symbolize_keys.merge(:controller => controller_path, :action => action) + extra_keys = ActionController::Routing::Routes.extra_keys(parameters) + non_path_parameters = get? ? query_parameters : request_parameters + parameters.each do |key, value| + if value.is_a? Fixnum + value = value.to_s + elsif value.is_a? Array + value = Result.new(value) + end + + if extra_keys.include?(key.to_sym) + non_path_parameters[key] = value + else + path_parameters[key.to_s] = value + end + end + + 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/ } + @env['action_dispatch.request.query_parameters'] = {} + end + end + + class TestResponse < ActionDispatch::TestResponse + def recycle! + @status = 200 + @header = {} + @writer = lambda { |x| @body << x } + @block = nil + @length = 0 + @body = [] + @charset = nil + @content_type = nil + + @request = @template = nil + end + end + + class TestSession < ActionDispatch::Session::AbstractStore::SessionHash #:nodoc: + DEFAULT_OPTIONS = ActionDispatch::Session::AbstractStore::DEFAULT_OPTIONS + + def initialize(session = {}) + replace(session.stringify_keys) + @loaded = true + 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 ActionController::IntegrationTest), which are more like + # "stories" that can involve multiple controllers and mutliple actions (i.e. multiple + # different HTTP requests). + # + # == Basic example + # + # Functional tests are written as follows: + # 1. First, one uses the +get+, +post+, +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 + # + # == Special instance variables + # + # ActionController::TestCase will also automatically provide the following instance + # variables for use in the tests: + # + # <b>@controller</b>:: + # The controller instance that will be tested. + # <b>@request</b>:: + # 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. + # <b>@response</b>:: + # An ActionController::TestResponse object, representing the response + # of the last HTTP response. In the above example, <tt>@response</tt> 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 the request collections + # + # The collections described above link to the response, so you can test if what the actions were expected to do happened. But + # sometimes you also want to manipulate these collections in the incoming request. This is really only relevant for sessions + # and cookies, though. For sessions, you just do: + # + # @request.session[:key] = "value" + # @request.cookies["key"] = "value" + # + # == 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. + # Example: + # + # assert_redirected_to page_url(:title => 'foo') + class TestCase < ActiveSupport::TestCase + include TestProcess + + # Executes a request simulating GET HTTP method and set/volley the response + def get(action, parameters = nil, session = nil, flash = nil) + process(action, parameters, session, flash, "GET") + end + + # Executes a request simulating POST HTTP method and set/volley the response + def post(action, parameters = nil, session = nil, flash = nil) + process(action, parameters, session, flash, "POST") + end + + # Executes a request simulating PUT HTTP method and set/volley the response + def put(action, parameters = nil, session = nil, flash = nil) + process(action, parameters, session, flash, "PUT") + end + + # Executes a request simulating DELETE HTTP method and set/volley the response + def delete(action, parameters = nil, session = nil, flash = nil) + process(action, parameters, session, flash, "DELETE") + end + + # Executes a request simulating HEAD HTTP method and set/volley the response + def head(action, parameters = nil, session = nil, flash = nil) + process(action, parameters, session, flash, "HEAD") + 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(', ') + returning __send__(request_method, action, parameters, session, flash) do + @request.env.delete 'HTTP_X_REQUESTED_WITH' + @request.env.delete 'HTTP_ACCEPT' + end + end + alias xhr :xml_http_request + + def process(action, parameters = nil, session = nil, flash = nil, http_method = 'GET') + # Sanity check for required instance variables so we can give an + # understandable error message. + %w(@controller @request @response).each do |iv_name| + if !(instance_variable_names.include?(iv_name) || instance_variable_names.include?(iv_name.to_sym)) || instance_variable_get(iv_name).nil? + raise "#{iv_name} is nil: make sure you set it in your test's setup method." + end + end + + @request.recycle! + @response.recycle! + @controller.response_body = nil + @controller.formats = nil + @controller.params = nil + + @html_document = nil + @request.env['REQUEST_METHOD'] = http_method + + parameters ||= {} + @request.assign_parameters(@controller.class.name.underscore.sub(/_controller$/, ''), action.to_s, parameters) + + @request.session = ActionController::TestSession.new(session) unless session.nil? + @request.session["flash"] = ActionController::Flash::FlashHash.new.update(flash) if flash + + @controller.request = @request + @controller.params.merge!(parameters) + build_request_uri(action, parameters) + Base.class_eval { include Testing } + @controller.process_with_new_base_test(@request, @response) + @response + end + + include ActionDispatch::Assertions + + # When the request.remote_addr remains the default for testing, which is 0.0.0.0, the exception is simply raised inline + # (bystepping the regular exception handling from rescue_action). If the request.remote_addr is anything else, the regular + # rescue_action process takes place. This means you can test your rescue_action code by setting remote_addr to something else + # than 0.0.0.0. + # + # The exception is stored in the exception accessor for further inspection. + module RaiseActionExceptions + def self.included(base) + base.class_eval do + attr_accessor :exception + protected :exception, :exception= + end + end + + protected + def rescue_action_without_handler(e) + self.exception = e + + if request.remote_addr == "0.0.0.0" + raise(e) + else + super(e) + end + end + end + + setup :setup_controller_request_and_response + + @@controller_class = nil + + class << self + # Sets the controller class name. Useful if the name can't be inferred from test class. + # Expects +controller_class+ as a constant. Example: <tt>tests WidgetController</tt>. + def tests(controller_class) + self.controller_class = controller_class + end + + def controller_class=(new_class) + prepare_controller_class(new_class) if new_class + write_inheritable_attribute(:controller_class, new_class) + end + + def controller_class + if current_controller_class = read_inheritable_attribute(:controller_class) + current_controller_class + else + self.controller_class = determine_default_controller_class(name) + end + end + + def determine_default_controller_class(name) + name.sub(/Test$/, '').constantize + rescue NameError + nil + end + + def prepare_controller_class(new_class) + new_class.send :include, RaiseActionExceptions + end + end + + def setup_controller_request_and_response + @request = TestRequest.new + @response = TestResponse.new + + if klass = self.class.controller_class + @controller ||= klass.new rescue nil + end + + if @controller + @controller.request = @request + @controller.params = {} + end + end + + # Cause the action to be rescued according to the regular rules for rescue_action when the visitor is not local + def rescue_action_in_public! + @request.remote_addr = '208.77.188.166' # example.com + end + + private + def build_request_uri(action, parameters) + unless @request.env['REQUEST_URI'] + options = @controller.__send__(:rewrite_options, parameters) + options.update(:only_path => true, :action => action) + + url = ActionController::UrlRewriter.new(@request, parameters) + @request.request_uri = url.rewrite(options) + end + end + end +end |