650 lines
20 KiB
Ruby
650 lines
20 KiB
Ruby
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require "stringio"
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require "uri"
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require "active_support/core_ext/kernel/singleton_class"
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require "active_support/core_ext/object/try"
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require "rack/test"
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require "minitest"
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require "action_dispatch/testing/request_encoder"
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module ActionDispatch
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module Integration #:nodoc:
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module RequestHelpers
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# Performs a GET request with the given parameters. See +#process+ for more
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# details.
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def get(path, **args)
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process(:get, path, **args)
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end
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# Performs a POST request with the given parameters. See +#process+ for more
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# details.
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def post(path, **args)
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process(:post, path, **args)
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end
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# Performs a PATCH request with the given parameters. See +#process+ for more
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# details.
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def patch(path, **args)
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process(:patch, path, **args)
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end
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# Performs a PUT request with the given parameters. See +#process+ for more
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# details.
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def put(path, **args)
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process(:put, path, **args)
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end
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# Performs a DELETE request with the given parameters. See +#process+ for
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# more details.
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def delete(path, **args)
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process(:delete, path, **args)
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end
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# Performs a HEAD request with the given parameters. See +#process+ for more
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# details.
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def head(path, *args)
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process(:head, path, *args)
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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(response.location)
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status
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end
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end
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# An instance of this class represents a set of requests and responses
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# performed sequentially by a test process. 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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DEFAULT_HOST = "www.example.com"
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include Minitest::Assertions
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include TestProcess, RequestHelpers, Assertions
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%w( status status_message headers body redirect? ).each do |method|
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delegate method, to: :response, allow_nil: true
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end
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%w( path ).each do |method|
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delegate method, to: :request, allow_nil: true
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end
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# The hostname used in the last request.
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def host
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@host || DEFAULT_HOST
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end
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attr_writer :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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def cookies
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_mock_session.cookie_jar
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end
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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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include ActionDispatch::Routing::UrlFor
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# Create and initialize a new Session instance.
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def initialize(app)
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super()
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@app = app
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reset!
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end
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def url_options
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@url_options ||= default_url_options.dup.tap do |url_options|
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url_options.reverse_merge!(controller.url_options) if controller
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if @app.respond_to?(:routes)
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url_options.reverse_merge!(@app.routes.default_url_options)
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end
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url_options.reverse_merge!(host: host, protocol: https? ? "https" : "http")
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end
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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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@https = false
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@controller = @request = @response = nil
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@_mock_session = nil
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@request_count = 0
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@url_options = nil
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self.host = DEFAULT_HOST
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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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# 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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@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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# Returns +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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# Performs the actual request.
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#
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# - +method+: The HTTP method (GET, POST, PATCH, PUT, DELETE, HEAD, OPTIONS)
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# as a symbol.
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# - +path+: The URI (as a String) on which you want to perform the
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# request.
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# - +params+: 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 headers to pass, as a Hash. The headers will be
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# merged into the Rack env hash.
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# - +env+: Additional env to pass, as a Hash. The headers will be
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# merged into the Rack env hash.
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#
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# This method is rarely used directly. Use +#get+, +#post+, or other standard
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# HTTP methods in integration tests. +#process+ is only required when using a
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# request method that doesn't have a method defined in the integration tests.
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#
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# This method returns the response status, after performing the request.
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# Furthermore, if this method was called from an ActionDispatch::IntegrationTest object,
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# then that object's <tt>@response</tt> instance variable will point to a Response object
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# which one can use to inspect the details of the response.
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#
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# Example:
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# process :get, '/author', params: { since: 201501011400 }
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def process(method, path, params: nil, headers: nil, env: nil, xhr: false, as: nil)
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request_encoder = RequestEncoder.encoder(as)
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headers ||= {}
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if method == :get && as == :json && params
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headers["X-Http-Method-Override"] = "GET"
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method = :post
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end
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if path =~ %r{://}
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path = build_expanded_path(path) do |location|
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https! URI::HTTPS === location if location.scheme
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if url_host = location.host
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default = Rack::Request::DEFAULT_PORTS[location.scheme]
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url_host += ":#{location.port}" if default != location.port
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host! url_host
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end
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end
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end
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hostname, port = host.split(":")
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request_env = {
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:method => method,
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:params => request_encoder.encode_params(params),
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"SERVER_NAME" => hostname,
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"SERVER_PORT" => 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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"REQUEST_URI" => path,
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"HTTP_HOST" => host,
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"REMOTE_ADDR" => remote_addr,
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"CONTENT_TYPE" => request_encoder.content_type,
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"HTTP_ACCEPT" => request_encoder.accept_header || accept
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}
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wrapped_headers = Http::Headers.from_hash({})
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wrapped_headers.merge!(headers) if headers
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if xhr
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wrapped_headers["HTTP_X_REQUESTED_WITH"] = "XMLHttpRequest"
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wrapped_headers["HTTP_ACCEPT"] ||= [Mime[:js], Mime[:html], Mime[:xml], "text/xml", "*/*"].join(", ")
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end
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# this modifies the passed request_env directly
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if wrapped_headers.present?
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Http::Headers.from_hash(request_env).merge!(wrapped_headers)
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end
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if env.present?
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Http::Headers.from_hash(request_env).merge!(env)
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end
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session = Rack::Test::Session.new(_mock_session)
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# NOTE: rack-test v0.5 doesn't build a default uri correctly
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# Make sure requested path is always a full uri
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session.request(build_full_uri(path, request_env), request_env)
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@request_count += 1
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@request = ActionDispatch::Request.new(session.last_request.env)
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response = _mock_session.last_response
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@response = ActionDispatch::TestResponse.from_response(response)
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@response.request = @request
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@html_document = nil
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@url_options = nil
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@controller = @request.controller_instance
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response.status
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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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alias :host! :host=
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private
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def _mock_session
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@_mock_session ||= Rack::MockSession.new(@app, host)
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end
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def build_full_uri(path, env)
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"#{env['rack.url_scheme']}://#{env['SERVER_NAME']}:#{env['SERVER_PORT']}#{path}"
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end
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def build_expanded_path(path)
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location = URI.parse(path)
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yield location if block_given?
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path = location.path
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location.query ? "#{path}?#{location.query}" : path
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end
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end
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module Runner
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include ActionDispatch::Assertions
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APP_SESSIONS = {}
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attr_reader :app
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def initialize(*args, &blk)
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super(*args, &blk)
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@integration_session = nil
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end
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def before_setup # :nodoc:
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@app = nil
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super
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end
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def integration_session
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@integration_session ||= create_session(app)
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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 = create_session(app)
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end
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def create_session(app)
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klass = APP_SESSIONS[app] ||= Class.new(Integration::Session) {
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# If the app is a Rails app, make url_helpers available on the session
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# This makes app.url_for and app.foo_path available in the console
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if app.respond_to?(:routes)
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include app.routes.url_helpers
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include app.routes.mounted_helpers
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end
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}
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klass.new(app)
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end
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def remove! # :nodoc:
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@integration_session = nil
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end
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%w(get post patch put head delete cookies assigns follow_redirect!).each do |method|
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define_method(method) do |*args|
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# reset the html_document variable, except for cookies/assigns calls
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unless method == "cookies" || method == "assigns"
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@html_document = nil
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end
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integration_session.__send__(method, *args).tap 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
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dup.tap do |session|
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session.reset!
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yield session if block_given?
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end
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end
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# Copy the instance variables from the current session instance into the
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# test instance.
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def copy_session_variables! #:nodoc:
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@controller = @integration_session.controller
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@response = @integration_session.response
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@request = @integration_session.request
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end
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def default_url_options
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integration_session.default_url_options
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end
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def default_url_options=(options)
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integration_session.default_url_options = options
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end
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def respond_to_missing?(method, include_private = false)
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integration_session.respond_to?(method, include_private) || super
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end
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# Delegate unhandled messages to the current session instance.
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def method_missing(sym, *args, &block)
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if integration_session.respond_to?(sym)
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||
|
|
integration_session.__send__(sym, *args, &block).tap do
|
||
|
|
copy_session_variables!
|
||
|
|
end
|
||
|
|
else
|
||
|
|
super
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
# An integration test 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 <tt>IntegrationTest</tt> and write your tests
|
||
|
|
# using the get/post methods:
|
||
|
|
#
|
||
|
|
# require "test_helper"
|
||
|
|
#
|
||
|
|
# class ExampleTest < ActionDispatch::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", params: { 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 "test_helper"
|
||
|
|
#
|
||
|
|
# class AdvancedTest < ActionDispatch::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)
|
||
|
|
# post "/say/#{room.id}", xhr: true, params: { message: message }
|
||
|
|
# assert(...)
|
||
|
|
# ...
|
||
|
|
# end
|
||
|
|
# end
|
||
|
|
#
|
||
|
|
# def login(who)
|
||
|
|
# open_session do |sess|
|
||
|
|
# sess.extend(CustomAssertions)
|
||
|
|
# who = people(who)
|
||
|
|
# sess.post "/login", params: { username: who.username,
|
||
|
|
# password: who.password }
|
||
|
|
# assert(...)
|
||
|
|
# end
|
||
|
|
# end
|
||
|
|
# end
|
||
|
|
#
|
||
|
|
# Another longer example would be:
|
||
|
|
#
|
||
|
|
# A simple integration test that exercises multiple controllers:
|
||
|
|
#
|
||
|
|
# require 'test_helper'
|
||
|
|
#
|
||
|
|
# class UserFlowsTest < ActionDispatch::IntegrationTest
|
||
|
|
# test "login and browse site" do
|
||
|
|
# # login via https
|
||
|
|
# https!
|
||
|
|
# get "/login"
|
||
|
|
# assert_response :success
|
||
|
|
#
|
||
|
|
# post "/login", params: { username: users(:david).username, password: users(:david).password }
|
||
|
|
# follow_redirect!
|
||
|
|
# assert_equal '/welcome', path
|
||
|
|
# assert_equal 'Welcome david!', flash[:notice]
|
||
|
|
#
|
||
|
|
# https!(false)
|
||
|
|
# get "/articles/all"
|
||
|
|
# assert_response :success
|
||
|
|
# assert_select 'h1', 'Articles'
|
||
|
|
# end
|
||
|
|
# end
|
||
|
|
#
|
||
|
|
# As you can see the integration test involves multiple controllers and
|
||
|
|
# exercises the entire stack from database to dispatcher. In addition you can
|
||
|
|
# have multiple session instances open simultaneously in a test and extend
|
||
|
|
# those instances with assertion methods to create a very powerful testing
|
||
|
|
# DSL (domain-specific language) just for your application.
|
||
|
|
#
|
||
|
|
# Here's an example of multiple sessions and custom DSL in an integration test
|
||
|
|
#
|
||
|
|
# require 'test_helper'
|
||
|
|
#
|
||
|
|
# class UserFlowsTest < ActionDispatch::IntegrationTest
|
||
|
|
# test "login and browse site" do
|
||
|
|
# # User david logs in
|
||
|
|
# david = login(:david)
|
||
|
|
# # User guest logs in
|
||
|
|
# guest = login(:guest)
|
||
|
|
#
|
||
|
|
# # Both are now available in different sessions
|
||
|
|
# assert_equal 'Welcome david!', david.flash[:notice]
|
||
|
|
# assert_equal 'Welcome guest!', guest.flash[:notice]
|
||
|
|
#
|
||
|
|
# # User david can browse site
|
||
|
|
# david.browses_site
|
||
|
|
# # User guest can browse site as well
|
||
|
|
# guest.browses_site
|
||
|
|
#
|
||
|
|
# # Continue with other assertions
|
||
|
|
# end
|
||
|
|
#
|
||
|
|
# private
|
||
|
|
#
|
||
|
|
# module CustomDsl
|
||
|
|
# def browses_site
|
||
|
|
# get "/products/all"
|
||
|
|
# assert_response :success
|
||
|
|
# assert_select 'h1', 'Products'
|
||
|
|
# end
|
||
|
|
# end
|
||
|
|
#
|
||
|
|
# def login(user)
|
||
|
|
# open_session do |sess|
|
||
|
|
# sess.extend(CustomDsl)
|
||
|
|
# u = users(user)
|
||
|
|
# sess.https!
|
||
|
|
# sess.post "/login", params: { username: u.username, password: u.password }
|
||
|
|
# assert_equal '/welcome', sess.path
|
||
|
|
# sess.https!(false)
|
||
|
|
# end
|
||
|
|
# end
|
||
|
|
# end
|
||
|
|
#
|
||
|
|
# See the {request helpers documentation}[rdoc-ref:ActionDispatch::Integration::RequestHelpers] for help on how to
|
||
|
|
# use +get+, etc.
|
||
|
|
#
|
||
|
|
# === Changing the request encoding
|
||
|
|
#
|
||
|
|
# You can also test your JSON API easily by setting what the request should
|
||
|
|
# be encoded as:
|
||
|
|
#
|
||
|
|
# require "test_helper"
|
||
|
|
#
|
||
|
|
# class ApiTest < ActionDispatch::IntegrationTest
|
||
|
|
# test "creates articles" do
|
||
|
|
# assert_difference -> { Article.count } do
|
||
|
|
# post articles_path, params: { article: { title: "Ahoy!" } }, as: :json
|
||
|
|
# end
|
||
|
|
#
|
||
|
|
# assert_response :success
|
||
|
|
# assert_equal({ id: Article.last.id, title: "Ahoy!" }, response.parsed_body)
|
||
|
|
# end
|
||
|
|
# end
|
||
|
|
#
|
||
|
|
# The +as+ option passes an "application/json" Accept header (thereby setting
|
||
|
|
# the request format to JSON unless overridden), sets the content type to
|
||
|
|
# "application/json" and encodes the parameters as JSON.
|
||
|
|
#
|
||
|
|
# Calling +parsed_body+ on the response parses the response body based on the
|
||
|
|
# last response MIME type.
|
||
|
|
#
|
||
|
|
# Out of the box, only <tt>:json</tt> is supported. But for any custom MIME
|
||
|
|
# types you've registered, you can add your own encoders with:
|
||
|
|
#
|
||
|
|
# ActionDispatch::IntegrationTest.register_encoder :wibble,
|
||
|
|
# param_encoder: -> params { params.to_wibble },
|
||
|
|
# response_parser: -> body { body }
|
||
|
|
#
|
||
|
|
# Where +param_encoder+ defines how the params should be encoded and
|
||
|
|
# +response_parser+ defines how the response body should be parsed through
|
||
|
|
# +parsed_body+.
|
||
|
|
#
|
||
|
|
# Consult the Rails Testing Guide for more.
|
||
|
|
|
||
|
|
class IntegrationTest < ActiveSupport::TestCase
|
||
|
|
include TestProcess::FixtureFile
|
||
|
|
|
||
|
|
module UrlOptions
|
||
|
|
extend ActiveSupport::Concern
|
||
|
|
def url_options
|
||
|
|
integration_session.url_options
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
module Behavior
|
||
|
|
extend ActiveSupport::Concern
|
||
|
|
|
||
|
|
include Integration::Runner
|
||
|
|
include ActionController::TemplateAssertions
|
||
|
|
|
||
|
|
included do
|
||
|
|
include ActionDispatch::Routing::UrlFor
|
||
|
|
include UrlOptions # don't let UrlFor override the url_options method
|
||
|
|
ActiveSupport.run_load_hooks(:action_dispatch_integration_test, self)
|
||
|
|
@@app = nil
|
||
|
|
end
|
||
|
|
|
||
|
|
module ClassMethods
|
||
|
|
def app
|
||
|
|
if defined?(@@app) && @@app
|
||
|
|
@@app
|
||
|
|
else
|
||
|
|
ActionDispatch.test_app
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
def app=(app)
|
||
|
|
@@app = app
|
||
|
|
end
|
||
|
|
|
||
|
|
def register_encoder(*args)
|
||
|
|
RequestEncoder.register_encoder(*args)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
def app
|
||
|
|
super || self.class.app
|
||
|
|
end
|
||
|
|
|
||
|
|
def document_root_element
|
||
|
|
html_document.root
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
include Behavior
|
||
|
|
end
|
||
|
|
end
|