require File.expand_path('../shared/rsqrt', __FILE__) describe "Math#rsqrt" do it_behaves_like :mathn_math_rsqrt, :_, IncludesMath.new it "is a private instance method" do IncludesMath.should have_private_instance_method(:rsqrt) end end describe "Math.rsqrt" do it_behaves_like :mathn_math_rsqrt, :_, Math end