697 lines
24 KiB
Ruby
697 lines
24 KiB
Ruby
require 'stringio'
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require 'uri'
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require 'active_support/test_case'
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require 'action_controller/rack_lint_patch'
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module ActionController
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module Integration #:nodoc:
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# An integration Session instance represents a set of requests and responses
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# performed sequentially by some virtual user. Because you can instantiate
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# multiple sessions and run them side-by-side, you can also mimic (to some
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# limited extent) multiple simultaneous users interacting with your system.
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#
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# Typically, you will instantiate a new session using
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# IntegrationTest#open_session, rather than instantiating
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# Integration::Session directly.
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class Session
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include Test::Unit::Assertions
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include ActionController::TestCase::Assertions
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include ActionController::TestProcess
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# Rack application to use
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attr_accessor :application
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# The integer HTTP status code of the last request.
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attr_reader :status
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# The status message that accompanied the status code of the last request.
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attr_reader :status_message
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# The body of the last request.
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attr_reader :body
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# The URI of the last request.
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attr_reader :path
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# The hostname used in the last request.
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attr_accessor :host
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# The remote_addr used in the last request.
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attr_accessor :remote_addr
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# The Accept header to send.
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attr_accessor :accept
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# A map of the cookies returned by the last response, and which will be
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# sent with the next request.
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attr_reader :cookies
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# A map of the headers returned by the last response.
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attr_reader :headers
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# A reference to the controller instance used by the last request.
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attr_reader :controller
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# A reference to the request instance used by the last request.
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attr_reader :request
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# A reference to the response instance used by the last request.
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attr_reader :response
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# A running counter of the number of requests processed.
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attr_accessor :request_count
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class MultiPartNeededException < Exception
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end
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# Create and initialize a new Session instance.
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def initialize(app = nil)
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@application = app || ActionController::Dispatcher.new
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reset!
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end
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# Resets the instance. This can be used to reset the state information
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# in an existing session instance, so it can be used from a clean-slate
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# condition.
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#
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# session.reset!
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def reset!
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@status = @path = @headers = nil
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@result = @status_message = nil
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@https = false
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@cookies = {}
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@controller = @request = @response = nil
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@request_count = 0
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self.host = "www.example.com"
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self.remote_addr = "127.0.0.1"
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self.accept = "text/xml,application/xml,application/xhtml+xml," +
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"text/html;q=0.9,text/plain;q=0.8,image/png," +
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"*/*;q=0.5"
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unless defined? @named_routes_configured
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# install the named routes in this session instance.
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klass = class << self; self; end
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Routing::Routes.install_helpers(klass)
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# the helpers are made protected by default--we make them public for
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# easier access during testing and troubleshooting.
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klass.module_eval { public *Routing::Routes.named_routes.helpers }
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@named_routes_configured = true
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end
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end
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# Specify whether or not the session should mimic a secure HTTPS request.
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#
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# session.https!
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# session.https!(false)
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def https!(flag = true)
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@https = flag
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end
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# Return +true+ if the session is mimicking a secure HTTPS request.
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#
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# if session.https?
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# ...
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# end
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def https?
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@https
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end
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# Set the host name to use in the next request.
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#
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# session.host! "www.example.com"
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def host!(name)
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@host = name
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end
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# Follow a single redirect response. If the last response was not a
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# redirect, an exception will be raised. Otherwise, the redirect is
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# performed on the location header.
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def follow_redirect!
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raise "not a redirect! #{@status} #{@status_message}" unless redirect?
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get(interpret_uri(headers['location']))
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status
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end
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# Performs a request using the specified method, following any subsequent
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# redirect. Note that the redirects are followed until the response is
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# not a redirect--this means you may run into an infinite loop if your
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# redirect loops back to itself.
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def request_via_redirect(http_method, path, parameters = nil, headers = nil)
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send(http_method, path, parameters, headers)
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follow_redirect! while redirect?
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status
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end
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# Performs a GET request, following any subsequent redirect.
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# See +request_via_redirect+ for more information.
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def get_via_redirect(path, parameters = nil, headers = nil)
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request_via_redirect(:get, path, parameters, headers)
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end
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# Performs a POST request, following any subsequent redirect.
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# See +request_via_redirect+ for more information.
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def post_via_redirect(path, parameters = nil, headers = nil)
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request_via_redirect(:post, path, parameters, headers)
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end
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# Performs a PUT request, following any subsequent redirect.
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# See +request_via_redirect+ for more information.
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def put_via_redirect(path, parameters = nil, headers = nil)
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request_via_redirect(:put, path, parameters, headers)
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end
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# Performs a DELETE request, following any subsequent redirect.
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# See +request_via_redirect+ for more information.
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def delete_via_redirect(path, parameters = nil, headers = nil)
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request_via_redirect(:delete, path, parameters, headers)
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end
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# Returns +true+ if the last response was a redirect.
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def redirect?
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status/100 == 3
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end
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# Performs a GET request with the given parameters.
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#
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# - +path+: The URI (as a String) on which you want to perform a GET
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# request.
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# - +parameters+: The HTTP parameters that you want to pass. This may
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# be +nil+,
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# a Hash, or a String that is appropriately encoded
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# (<tt>application/x-www-form-urlencoded</tt> or
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# <tt>multipart/form-data</tt>).
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# - +headers+: Additional HTTP headers to pass, as a Hash. The keys will
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# automatically be upcased, with the prefix 'HTTP_' added if needed.
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#
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# This method returns an Response object, which one can use to
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# inspect the details of the response. Furthermore, if this method was
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# called from an ActionController::IntegrationTest object, then that
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# object's <tt>@response</tt> instance variable will point to the same
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# response object.
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#
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# You can also perform POST, PUT, DELETE, and HEAD requests with +post+,
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# +put+, +delete+, and +head+.
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def get(path, parameters = nil, headers = nil)
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process :get, path, parameters, headers
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end
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# Performs a POST request with the given parameters. See get() for more
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# details.
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def post(path, parameters = nil, headers = nil)
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process :post, path, parameters, headers
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end
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# Performs a PUT request with the given parameters. See get() for more
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# details.
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def put(path, parameters = nil, headers = nil)
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process :put, path, parameters, headers
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end
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# Performs a DELETE request with the given parameters. See get() for
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# more details.
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def delete(path, parameters = nil, headers = nil)
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process :delete, path, parameters, headers
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end
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# Performs a HEAD request with the given parameters. See get() for more
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# details.
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def head(path, parameters = nil, headers = nil)
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process :head, path, parameters, headers
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end
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# Performs an XMLHttpRequest request with the given parameters, mirroring
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# a request from the Prototype library.
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#
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# The request_method is :get, :post, :put, :delete or :head; the
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# parameters are +nil+, a hash, or a url-encoded or multipart string;
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# the headers are a hash. Keys are automatically upcased and prefixed
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# with 'HTTP_' if not already.
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def xml_http_request(request_method, path, parameters = nil, headers = nil)
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headers ||= {}
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headers['X-Requested-With'] = 'XMLHttpRequest'
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headers['Accept'] ||= [Mime::JS, Mime::HTML, Mime::XML, 'text/xml', Mime::ALL].join(', ')
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process(request_method, path, parameters, headers)
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end
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alias xhr :xml_http_request
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# Returns the URL for the given options, according to the rules specified
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# in the application's routes.
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def url_for(options)
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controller ?
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controller.url_for(options) :
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generic_url_rewriter.rewrite(options)
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end
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private
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# Tailors the session based on the given URI, setting the HTTPS value
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# and the hostname.
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def interpret_uri(path)
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location = URI.parse(path)
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https! URI::HTTPS === location if location.scheme
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host! location.host if location.host
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location.query ? "#{location.path}?#{location.query}" : location.path
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end
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# Performs the actual request.
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def process(method, path, parameters = nil, headers = nil)
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data = requestify(parameters)
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path = interpret_uri(path) if path =~ %r{://}
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path = "/#{path}" unless path[0] == ?/
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@path = path
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env = {}
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if method == :get
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env["QUERY_STRING"] = data
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data = nil
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end
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env["QUERY_STRING"] ||= ""
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data ||= ''
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data.force_encoding(Encoding::ASCII_8BIT) if data.respond_to?(:force_encoding)
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data = data.is_a?(IO) ? data : StringIO.new(data)
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env.update(
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"REQUEST_METHOD" => method.to_s.upcase,
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"SERVER_NAME" => host,
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"SERVER_PORT" => (https? ? "443" : "80"),
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"HTTPS" => https? ? "on" : "off",
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"rack.url_scheme" => https? ? "https" : "http",
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"SCRIPT_NAME" => "",
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"REQUEST_URI" => path,
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"PATH_INFO" => path,
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"HTTP_HOST" => host,
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"REMOTE_ADDR" => remote_addr,
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"CONTENT_TYPE" => "application/x-www-form-urlencoded",
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"CONTENT_LENGTH" => data ? data.length.to_s : nil,
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"HTTP_COOKIE" => encode_cookies,
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"HTTP_ACCEPT" => accept,
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"rack.version" => [0,1],
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"rack.input" => data,
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"rack.errors" => StringIO.new,
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"rack.multithread" => true,
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"rack.multiprocess" => true,
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"rack.run_once" => false
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)
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(headers || {}).each do |key, value|
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key = key.to_s.upcase.gsub(/-/, "_")
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key = "HTTP_#{key}" unless env.has_key?(key) || key =~ /^HTTP_/
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env[key] = value
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end
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[ControllerCapture, ActionController::ProcessWithTest].each do |mod|
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unless ActionController::Base < mod
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ActionController::Base.class_eval { include mod }
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end
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end
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ActionController::Base.clear_last_instantiation!
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app = Rack::Lint.new(@application)
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status, headers, body = app.call(env)
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@request_count += 1
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@html_document = nil
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@status = status.to_i
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@status_message = StatusCodes::STATUS_CODES[@status]
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@headers = Rack::Utils::HeaderHash.new(headers)
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cookies = @headers['Set-Cookie']
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cookies = cookies.to_s.split("\n") unless cookies.is_a?(Array)
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cookies.each do |cookie|
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name, value = cookie.match(/^([^=]*)=([^;]*);/)[1,2]
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@cookies[name] = value
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end
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@body = ""
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if body.respond_to?(:to_str)
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@body << body
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else
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body.each { |part| @body << part }
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end
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if @controller = ActionController::Base.last_instantiation
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@request = @controller.request
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@response = @controller.response
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@controller.send(:set_test_assigns)
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else
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# Decorate responses from Rack Middleware and Rails Metal
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# as an Response for the purposes of integration testing
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@response = Response.new
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@response.status = status.to_s
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@response.headers.replace(@headers)
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@response.body = @body
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end
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# Decorate the response with the standard behavior of the
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# TestResponse so that things like assert_response can be
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# used in integration tests.
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@response.extend(TestResponseBehavior)
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body.close if body.respond_to?(:close)
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return @status
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rescue MultiPartNeededException
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boundary = "----------XnJLe9ZIbbGUYtzPQJ16u1"
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status = process(method, path,
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multipart_body(parameters, boundary),
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(headers || {}).merge(
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{"CONTENT_TYPE" => "multipart/form-data; boundary=#{boundary}"}))
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return status
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end
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# Encode the cookies hash in a format suitable for passing to a
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# request.
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def encode_cookies
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cookies.inject("") do |string, (name, value)|
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string << "#{name}=#{value}; "
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end
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end
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# Get a temporary URL writer object
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def generic_url_rewriter
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env = {
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'REQUEST_METHOD' => "GET",
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'QUERY_STRING' => "",
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"REQUEST_URI" => "/",
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"HTTP_HOST" => host,
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"SERVER_PORT" => https? ? "443" : "80",
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"HTTPS" => https? ? "on" : "off"
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}
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UrlRewriter.new(Request.new(env), {})
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end
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def name_with_prefix(prefix, name)
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prefix ? "#{prefix}[#{name}]" : name.to_s
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end
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# Convert the given parameters to a request string. The parameters may
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# be a string, +nil+, or a Hash.
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def requestify(parameters, prefix=nil)
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if TestUploadedFile === parameters
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raise MultiPartNeededException
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elsif Hash === parameters
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return nil if parameters.empty?
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parameters.map { |k,v|
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requestify(v, name_with_prefix(prefix, k))
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}.join("&")
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elsif Array === parameters
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parameters.map { |v|
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requestify(v, name_with_prefix(prefix, ""))
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}.join("&")
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elsif prefix.nil?
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parameters
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else
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"#{CGI.escape(prefix)}=#{CGI.escape(parameters.to_s)}"
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end
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end
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def multipart_requestify(params, first=true)
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returning Hash.new do |p|
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params.each do |key, value|
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k = first ? key.to_s : "[#{key.to_s}]"
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if Hash === value
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multipart_requestify(value, false).each do |subkey, subvalue|
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p[k + subkey] = subvalue
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end
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else
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p[k] = value
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end
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end
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end
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end
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def multipart_body(params, boundary)
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multipart_requestify(params).map do |key, value|
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if value.respond_to?(:original_filename)
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File.open(value.path, "rb") do |f|
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f.set_encoding(Encoding::BINARY) if f.respond_to?(:set_encoding)
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<<-EOF
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--#{boundary}\r
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Content-Disposition: form-data; name="#{key}"; filename="#{CGI.escape(value.original_filename)}"\r
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Content-Type: #{value.content_type}\r
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Content-Length: #{File.stat(value.path).size}\r
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\r
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#{f.read}\r
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EOF
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end
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else
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<<-EOF
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--#{boundary}\r
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Content-Disposition: form-data; name="#{key}"\r
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\r
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#{value}\r
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EOF
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end
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end.join("")+"--#{boundary}--\r"
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end
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end
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# A module used to extend ActionController::Base, so that integration tests
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# can capture the controller used to satisfy a request.
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module ControllerCapture #:nodoc:
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def self.included(base)
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base.extend(ClassMethods)
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base.class_eval do
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class << self
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alias_method_chain :new, :capture
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end
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end
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end
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module ClassMethods #:nodoc:
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mattr_accessor :last_instantiation
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def clear_last_instantiation!
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self.last_instantiation = nil
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end
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def new_with_capture(*args)
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controller = new_without_capture(*args)
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self.last_instantiation ||= controller
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controller
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end
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end
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end
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module Runner
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def initialize(*args)
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super
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@integration_session = nil
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end
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# Reset the current session. This is useful for testing multiple sessions
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# in a single test case.
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def reset!
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@integration_session = open_session
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end
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%w(get post put head delete cookies assigns
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xml_http_request xhr get_via_redirect post_via_redirect).each do |method|
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define_method(method) do |*args|
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reset! unless @integration_session
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# reset the html_document variable, but only for new get/post calls
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@html_document = nil unless %w(cookies assigns).include?(method)
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returning @integration_session.__send__(method, *args) do
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copy_session_variables!
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end
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end
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end
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# Open a new session instance. If a block is given, the new session is
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# yielded to the block before being returned.
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#
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# session = open_session do |sess|
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# sess.extend(CustomAssertions)
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# end
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#
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# By default, a single session is automatically created for you, but you
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# can use this method to open multiple sessions that ought to be tested
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# simultaneously.
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def open_session(application = nil)
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session = Integration::Session.new(application)
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# delegate the fixture accessors back to the test instance
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extras = Module.new { attr_accessor :delegate, :test_result }
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if self.class.respond_to?(:fixture_table_names)
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self.class.fixture_table_names.each do |table_name|
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name = table_name.tr(".", "_")
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next unless respond_to?(name)
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extras.__send__(:define_method, name) { |*args|
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delegate.send(name, *args)
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}
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end
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end
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# delegate add_assertion to the test case
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|
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
|
|
if @integration_session.respond_to?(sym)
|
|
returning @integration_session.__send__(sym, *args, &block) do
|
|
copy_session_variables!
|
|
end
|
|
else
|
|
super
|
|
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 < ActiveSupport::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
|