describe :module_attr_added, shared: true do it "calls method_added for normal classes" do ScratchPad.record [] cls = Class.new do class << self def method_added(name) ScratchPad.recorded << name end end end cls.send(@method, :foo) ScratchPad.recorded.each {|name| name.to_s.should =~ /foo[=]?/} end it "calls singleton_method_added for singleton classes" do ScratchPad.record [] cls = Class.new do class << self def singleton_method_added(name) # called for this def so ignore it return if name == :singleton_method_added ScratchPad.recorded << name end end end cls.singleton_class.send(@method, :foo) ScratchPad.recorded.each {|name| name.to_s.should =~ /foo[=]?/} end end