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|
module Test
module Unit
module Fixture
class << self
def included(base)
base.extend(ClassMethods)
[:setup, :cleanup, :teardown].each do |fixture|
observer = lambda do |test_case, _, _, value, callback|
if value.nil?
test_case.send("unregister_#{fixture}_callback", callback)
else
test_case.send("register_#{fixture}_callback", callback, value)
end
end
base.register_attribute_observer(fixture, &observer)
end
end
end
module ClassMethods
def setup(*method_names, &callback)
register_fixture(:setup, *method_names, &callback)
end
def unregister_setup(*method_names_or_callbacks)
unregister_fixture(:setup, *method_names_or_callbacks)
end
def cleanup(*method_names, &callback)
register_fixture(:cleanup, *method_names, &callback)
end
def unregister_cleanup(*method_names_or_callbacks)
unregister_fixture(:cleanup, *method_names_or_callbacks)
end
def teardown(*method_names, &callback)
register_fixture(:teardown, *method_names, &callback)
end
def unregister_teardown(*method_names_or_callbacks)
unregister_fixture(:teardown, *method_names_or_callbacks)
end
def register_setup_callback(method_name_or_callback, options)
register_fixture_callback(:setup, method_name_or_callback,
options, :after, :append)
end
def unregister_setup_callback(method_name_or_callback)
unregister_fixture_callback(:setup, method_name_or_callback)
end
def register_cleanup_callback(method_name_or_callback, options)
register_fixture_callback(:cleanup, method_name_or_callback,
options, :before, :prepend)
end
def unregister_cleanup_callback(method_name_or_callback)
unregister_fixture_callback(:cleanup, method_name_or_callback)
end
def register_teardown_callback(method_name_or_callback, options)
register_fixture_callback(:teardown, method_name_or_callback,
options, :before, :prepend)
end
def unregister_teardown_callback(method_name_or_callback)
unregister_fixture_callback(:teardown, method_name_or_callback)
end
def before_setup_callbacks
collect_fixture_callbacks(:setup, :before)
end
def after_setup_callbacks
collect_fixture_callbacks(:setup, :after)
end
def before_cleanup_callbacks
collect_fixture_callbacks(:cleanup, :before)
end
def after_cleanup_callbacks
collect_fixture_callbacks(:cleanup, :after)
end
def before_teardown_callbacks
collect_fixture_callbacks(:teardown, :before)
end
def after_teardown_callbacks
collect_fixture_callbacks(:teardown, :after)
end
private
def register_fixture(fixture, *method_names, &callback)
options = {}
options = method_names.pop if method_names.last.is_a?(Hash)
callbacks = method_names
callbacks << callback if callback
attribute(fixture, options, *callbacks)
end
def unregister_fixture(fixture, *method_names_or_callbacks)
attribute(fixture, nil, *method_names_or_callbacks)
end
def valid_register_fixture_options?(options)
return true if options.empty?
return false if options.size > 1
key = options.keys.first
[:before, :after].include?(key) and
[:prepend, :append].include?(options[key])
end
def add_fixture_callback(how, variable_name, method_name_or_callback)
callbacks = instance_eval("#{variable_name} ||= []")
if how == :prepend
callbacks = [method_name_or_callback] | callbacks
else
callbacks = callbacks | [method_name_or_callback]
end
instance_variable_set(variable_name, callbacks)
end
def registered_callbacks_variable_name(fixture, order)
"@#{order}_#{fixture}_callbacks"
end
def unregistered_callbacks_variable_name(fixture)
"@unregistered_#{fixture}_callbacks"
end
def register_fixture_callback(fixture, method_name_or_callback, options,
default_order, default_how)
unless valid_register_fixture_options?(options)
message = "must be {:before => :prepend}, " +
"{:before => :append}, {:after => :prepend} or " +
"{:after => :append}: #{options.inspect}"
raise ArgumentError, message
end
if options.empty?
order, how = default_order, default_how
else
order, how = options.to_a.first
end
variable_name = registered_callbacks_variable_name(fixture, order)
add_fixture_callback(how, variable_name, method_name_or_callback)
end
def unregister_fixture_callback(fixture, method_name_or_callback)
variable_name = unregistered_callbacks_variable_name(fixture)
add_fixture_callback(:append, variable_name, method_name_or_callback)
end
def collect_fixture_callbacks(fixture, order)
callbacks_variable = registered_callbacks_variable_name(fixture, order)
unregistered_callbacks_variable =
unregistered_callbacks_variable_name(fixture)
base_index = ancestors.index(Fixture)
interested_ancestors = ancestors[0, base_index].reverse
interested_ancestors.inject([]) do |result, ancestor|
if ancestor.is_a?(Class)
ancestor.class_eval do
callbacks = instance_eval("#{callbacks_variable} ||= []")
unregistered_callbacks =
instance_eval("#{unregistered_callbacks_variable} ||= []")
(result | callbacks) - unregistered_callbacks
end
else
result
end
end
end
end
private
def run_fixture(fixture, options={})
[
self.class.send("before_#{fixture}_callbacks"),
fixture,
self.class.send("after_#{fixture}_callbacks")
].flatten.each do |method_name_or_callback|
run_fixture_callback(method_name_or_callback, options)
end
end
def run_fixture_callback(method_name_or_callback, options)
if method_name_or_callback.respond_to?(:call)
callback = lambda do
instance_eval(&method_name_or_callback)
end
else
return unless respond_to?(method_name_or_callback, true)
callback = lambda do
send(method_name_or_callback)
end
end
begin
callback.call
rescue Exception
raise unless options[:handle_exception]
raise unless handle_exception($!)
end
end
def run_setup
run_fixture(:setup)
end
def run_cleanup
run_fixture(:cleanup)
end
def run_teardown
run_fixture(:teardown, :handle_exception => true)
end
end
end
end
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