1 files changed, 13 insertions, 0 deletions
diff --git a/tests/test_diff.py b/tests/test_diff.py
index 372af70..d5fa163 100644
--- a/tests/test_diff.py
+++ b/tests/test_diff.py
@@ -155,6 +155,19 @@ class TestDiff(unittest.TestCase):
         with self.assertRaises(ValueError):
             diff(expr_src, expr_tgt, matchings=[(expr_src, expr_tgt), (expr_src, expr_tgt)])
 
+    def test_identifier(self):
+        expr_src = parse_one("SELECT a FROM tbl")
+        expr_tgt = parse_one("SELECT a, tbl.b from tbl")
+
+        self._validate_delta_only(
+            diff(expr_src, expr_tgt),
+            [
+                Insert(expression=exp.to_identifier("b")),
+                Insert(expression=exp.to_column("tbl.b")),
+                Insert(expression=exp.to_identifier("tbl")),
+            ],
+        )
+
     def _validate_delta_only(self, actual_diff, expected_delta):
         actual_delta = _delta_only(actual_diff)
         self.assertEqual(set(actual_delta), set(expected_delta))