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module ClassVariablesSpec
class ClassA
@@cvar_a = :cvar_a
def cvar_a
@@cvar_a
end
def cvar_a=(val)
@@cvar_a = val
end
end
class ClassB < ClassA; end
# Extended in ClassC
module ModuleM
@@cvar_m = :value
def cvar_m
@@cvar_m
end
def cvar_m=(val)
@@cvar_m = val
end
end
# Extended in ModuleO
module ModuleN
@@cvar_n = :value
def cvar_n
@@cvar_n
end
def cvar_n=(val)
@@cvar_n = val
end
end
module ModuleO
extend ModuleN
end
class ClassC
extend ModuleM
def self.cvar_defined?
self.class_variable_defined?(:@@cvar)
end
def self.cvar_c=(val)
@@cvar = val
end
end
end
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