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module ActionDispatch
module Assertions
# A small suite of assertions that test responses from \Rails applications.
module ResponseAssertions
extend ActiveSupport::Concern
included do
# TODO: Need to pull in AV::Template monkey patches that track which
# templates are rendered. assert_template should probably be part
# of AV instead of AD.
require 'action_view/test_case'
end
# Asserts that the response is one of the following types:
#
# * <tt>:success</tt> - Status code was 200
# * <tt>:redirect</tt> - Status code was in the 300-399 range
# * <tt>:missing</tt> - Status code was 404
# * <tt>:error</tt> - Status code was in the 500-599 range
#
# You can also pass an explicit status number like <tt>assert_response(501)</tt>
# or its symbolic equivalent <tt>assert_response(:not_implemented)</tt>.
# See ActionDispatch::StatusCodes for a full list.
#
# ==== Examples
#
# # assert that the response was a redirection
# assert_response :redirect
#
# # assert that the response code was status code 401 (unauthorized)
# assert_response 401
#
def assert_response(type, message = nil)
validate_request!
if [ :success, :missing, :redirect, :error ].include?(type) && @response.send("#{type}?")
assert_block("") { true } # to count the assertion
elsif type.is_a?(Fixnum) && @response.response_code == type
assert_block("") { true } # to count the assertion
elsif type.is_a?(Symbol) && @response.response_code == Rack::Utils::SYMBOL_TO_STATUS_CODE[type]
assert_block("") { true } # to count the assertion
else
assert_block(build_message(message, "Expected response to be a <?>, but was <?>", type, @response.response_code)) { false }
end
end
# Assert that the redirection options passed in match those of the redirect called in the latest action.
# This match can be partial, such that <tt>assert_redirected_to(:controller => "weblog")</tt> will also
# match the redirection of <tt>redirect_to(:controller => "weblog", :action => "show")</tt> and so on.
#
# ==== Examples
#
# # assert that the redirection was to the "index" action on the WeblogController
# assert_redirected_to :controller => "weblog", :action => "index"
#
# # assert that the redirection was to the named route login_url
# assert_redirected_to login_url
#
# # assert that the redirection was to the url for @customer
# assert_redirected_to @customer
#
def assert_redirected_to(options = {}, message=nil)
validate_request!
assert_response(:redirect, message)
return true if options == @response.location
redirected_to_after_normalisation = normalize_argument_to_redirection(@response.location)
options_after_normalisation = normalize_argument_to_redirection(options)
if redirected_to_after_normalisation != options_after_normalisation
flunk "Expected response to be a redirect to <#{options_after_normalisation}> but was a redirect to <#{redirected_to_after_normalisation}>"
end
end
private
# Proxy to to_param if the object will respond to it.
def parameterize(value)
value.respond_to?(:to_param) ? value.to_param : value
end
def normalize_argument_to_redirection(fragment)
case fragment
when %r{^\w[A-Za-z\d+.-]*:.*}
fragment
when String
@request.protocol + @request.host_with_port + fragment
when :back
raise RedirectBackError unless refer = @request.headers["Referer"]
refer
else
@controller.url_for(fragment)
end.gsub(/[\r\n]/, '')
end
def validate_request!
unless @request.is_a?(ActionDispatch::Request)
raise ArgumentError, "@request must be an ActionDispatch::Request"
end
end
end
end
end
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