spec/integration/axiom/function/connective/negation/optimize_spec.rb in axiom-optimizer-0.1.0 vs spec/integration/axiom/function/connective/negation/optimize_spec.rb in axiom-optimizer-0.1.1

@@ -26,18 +26,18 @@
   end
 
   context 'operand is a tautology' do
     let(:operand) { Function::Proposition::Tautology.instance }
 
-    it { should equal(Function::Proposition::Contradiction.instance) }
+    it { should be(Function::Proposition::Contradiction.instance) }
 
     it_should_behave_like 'an optimize method'
   end
 
   context 'operand is a contradiction' do
     let(:operand) { Function::Proposition::Contradiction.instance }
 
-    it { should equal(Function::Proposition::Tautology.instance) }
+    it { should be(Function::Proposition::Tautology.instance) }
 
     it_should_behave_like 'an optimize method'
   end
 end