spec/lib/integrand_spec.rb in dydx-0.1.1 vs spec/lib/integrand_spec.rb in dydx-0.1.2

@@ -1,8 +1,9 @@
 require 'spec_helper'
 
 describe Dydx:Integrand do
   it 'ex1' do
+    $f = nil
     f(x, y) <= x * y
     integrand = S(f(x, y), dx)
     expect(integrand.function).to eq(f(x, y))
     expect(integrand.var).to eq(:x)
     expect{integrand[4, 3]}.to raise_error(ArgumentError)