opal_filter "class_variables" do
  fails "A class variable can be accessed from a subclass"
  fails "A class variable is set in the superclass"
  fails "A class variable defined in a module can be accessed from classes that extend the module"
  fails "A class variable defined in a module is not defined in these classes"
  fails "A class variable defined in a module is only updated in the module a method defined in the module is used"
  fails "A class variable defined in a module is updated in the class when a Method defined in the class is used"
  fails "A class variable defined in a module can be accessed inside the class using the module methods"
  fails "A class variable defined in a module can be accessed from modules that extend the module"
  fails "A class variable defined in a module is defined in the extended module"
  fails "A class variable defined in a module is not defined in the extending module"
end
