covers 'facets/module/redefine_method' testcase Module do unit :redefine_method do c = Class.new do def a; "a"; end redefine_method(:a){ nil } end c.new.a.assert == nil end unit :redef do c = Class.new do def b; "b"; end redef(:b){ "x" } end c.new.b.assert == "x" end end