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require 'active_support/test_case'
module ActionController
class NonInferrableControllerError < ActionControllerError
def initialize(name)
@name = name
super "Unable to determine the controller to test from #{name}. " +
"You'll need to specify it using 'tests YourController' in your " +
"test case definition. This could mean that #{inferred_controller_name} does not exist " +
"or it contains syntax errors"
end
def inferred_controller_name
@name.sub(/Test$/, '')
end
end
# Superclass for Action Controller functional tests. Infers the controller under test from the test class name,
# and creates @controller, @request, @response instance variables.
#
# class WidgetsControllerTest < ActionController::TestCase
# def test_index
# get :index
# end
# end
#
# * @controller - WidgetController.new
# * @request - ActionController::TestRequest.new
# * @response - ActionController::TestResponse.new
#
# (Earlier versions of Rails required each functional test to subclass Test::Unit::TestCase and define
# @controller, @request, @response in +setup+.)
#
# If the controller cannot be inferred from the test class name, you can explicity set it with +tests+.
#
# class SpecialEdgeCaseWidgetsControllerTest < ActionController::TestCase
# tests WidgetController
# end
class TestCase < ActiveSupport::TestCase
# 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
attr_accessor :exception
def rescue_action(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)
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
raise NonInferrableControllerError.new(name)
end
def prepare_controller_class(new_class)
new_class.send :include, RaiseActionExceptions
end
end
def setup_controller_request_and_response
@controller = self.class.controller_class.new
@controller.request = @request = TestRequest.new
@response = TestResponse.new
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
end
end
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