fix equiv

qiskit_nature/second_q/operators/sparse_label_op.py

@@ -314,9 +314,6 @@ def equiv(
     ) -> bool:
         """Check equivalence of two ``SparseLabelOp`` instances up to an accepted tolerance.
 
-        The default absolute and relative tolerances can be changed via the `atol` and `rtol`
-        attributes, respectively.
-
         Args:
             other: the second ``SparseLabelOp`` to compare with this instance.
             atol: Absolute numerical tolerance. The default behavior is to use ``self.atol``.
@@ -326,14 +323,14 @@ def equiv(
             True if operators are equivalent, False if not.
 
         Raises:
-            ValueError: Operator contains parameters.
+            ValueError: Raised if either operator contains parameters
         """
-        if self.is_parameterized():
-            raise ValueError("Cannot compare an operator that contains parameters.")
-
         if not isinstance(other, self.__class__):
             return False
 
+        if self.is_parameterized() or other.is_parameterized():
+            raise ValueError("Cannot compare an operator that contains parameters.")
+
         if self._data.keys() != other._data.keys():
             return False
 

test/second_q/operators/test_sparse_label_op.py

@@ -330,6 +330,9 @@ def test_equiv(self):
             test_op = DummySparseLabelOp(opParameter)
             with self.assertRaisesRegex(ValueError, "parameter"):
                 _ = test_op.equiv(DummySparseLabelOp(opParameter))
+            test_op = DummySparseLabelOp(opComplex)
+            with self.assertRaisesRegex(ValueError, "parameter"):
+                _ = test_op.equiv(DummySparseLabelOp(opParameter))
 
     def test_iter(self):
         """test __iter__ method"""