lib/mutant/mutator/node/send/binary.rb in mutant-0.8.3 vs lib/mutant/mutator/node/send/binary.rb in mutant-0.8.4

@@ -17,11 +17,35 @@
           # @api private
           def dispatch
             emit(left)
             emit_left_mutations
             emit_selector_replacement
-            emit(right) unless n_splat?(right)
+            emit(right)
             emit_right_mutations
+            emit_not_equality_mutations
+          end
+
+          # Emit mutations for `!=`
+          #
+          # @return [undefined]
+          #
+          # @api private
+          def emit_not_equality_mutations
+            return unless operator.equal?(:'!=')
+
+            emit_not_equality_mutation(:eql?)
+            emit_not_equality_mutation(:equal?)
+          end
+
+          # Emit negated method sends with specified operator
+          #
+          # @param new_operator [Symbol] selector to be negated
+          #
+          # @return [undefined]
+          #
+          # @api private
+          def emit_not_equality_mutation(new_operator)
+            emit(n_not(s(:send, left, new_operator, right)))
           end
 
         end # Binary
 
       end # Send