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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "Module#remove_class_variable" do
it "removes class variable" do
m = ModuleSpecs::MVars.dup
m.send(:remove_class_variable, :@@mvar)
m.class_variable_defined?(:@@mvar).should == false
end
it "returns the value of removing class variable" do
m = ModuleSpecs::MVars.dup
m.send(:remove_class_variable, :@@mvar).should == :mvar
end
it "removes a class variable defined in a metaclass" do
obj = mock("metaclass class variable")
meta = obj.singleton_class
meta.send :class_variable_set, :@@var, 1
meta.send(:remove_class_variable, :@@var).should == 1
meta.class_variable_defined?(:@@var).should be_false
end
it "raises a NameError when removing class variable declared in included module" do
c = ModuleSpecs::RemoveClassVariable.new { include ModuleSpecs::MVars.dup }
-> { c.send(:remove_class_variable, :@@mvar) }.should raise_error(NameError)
end
it "raises a NameError when passed a symbol with one leading @" do
-> { ModuleSpecs::MVars.send(:remove_class_variable, :@mvar) }.should raise_error(NameError)
end
it "raises a NameError when passed a symbol with no leading @" do
-> { ModuleSpecs::MVars.send(:remove_class_variable, :mvar) }.should raise_error(NameError)
end
it "raises a NameError when an uninitialized class variable is given" do
-> { ModuleSpecs::MVars.send(:remove_class_variable, :@@nonexisting_class_variable) }.should raise_error(NameError)
end
it "is public" do
Module.should_not have_private_instance_method(:remove_class_variable)
end
end
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