spec/unit/axiom/optimizer/optimize_spec.rb in axiom-optimizer-0.1.1 vs spec/unit/axiom/optimizer/optimize_spec.rb in axiom-optimizer-0.2.0

@@ -7,11 +7,7 @@
 
   let(:described_class) { Class.new(Optimizer)           }
   let(:operation)       { double('Operation')            }
   let(:object)          { described_class.new(operation) }
 
-  before do
-    described_class.stub(:to_s).and_return('Optimizer')
-  end
-
-  specify { expect { subject }.to raise_error(NotImplementedError, 'Optimizer#optimize must be implemented') }
+  specify { expect { subject }.to raise_error(NotImplementedError, "#{described_class}#optimize is not implemented") }
 end