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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 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 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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