use qml.equal on tests for decomposition

tests/ops/qubit/test_parametric_ops.py

@@ -2772,7 +2772,9 @@ def test_PauliRot_all_Identity(self):
 
         decomp_op = decomp_ops[0]
 
-        assert qml.equal(decomp_op, qml.GlobalPhase(theta/2))
+        assert qml.equal(decomp_op, qml.GlobalPhase(theta / 2))
+
+        assert qml.math.allclose(op.matrix(), decomp_op.matrix() * np.eye(4))
 
     def test_PauliRot_all_Identity_broadcasted(self):
         """Test handling of the broadcasted all-identity Pauli."""
@@ -2785,16 +2787,12 @@ def test_PauliRot_all_Identity_broadcasted(self):
 
         decomp_op = decomp_ops[0]
 
-        assert decomp_op.name == "GlobalPhase"
-
-        # global phase acts on all wires so wire attribute is unused
-        assert decomp_op.wires == Wires([])
-
-        assert len(decomp_op.data[0]) == len(theta)
-        for param, angle in zip(decomp_op.data[0], theta):
-            assert qml.math.allclose(param, angle / 2)
+        assert qml.equal(decomp_op, qml.GlobalPhase(theta / 2))
 
-        for op_matrix, decomp_phase in zip(op.matrix(), decomp_op.matrix().T):
+        op_matrices = op.matrix()
+        decomp_op_matrices = decomp_op.matrix().T
+        assert len(op_matrices) == len(decomp_op_matrices)
+        for op_matrix, decomp_phase in zip(op_matrices, decomp_op_matrices):
             assert qml.math.allclose(op_matrix, decomp_phase * np.eye(4))
 
     @pytest.mark.parametrize("theta", [0.4, np.array([np.pi / 3, 0.1, -0.9])])