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-rw-r--r--tests/test_time.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/test_time.py b/tests/test_time.py
index 17821c2..bd0e63f 100644
--- a/tests/test_time.py
+++ b/tests/test_time.py
@@ -5,7 +5,7 @@ from sqlglot.time import format_time
class TestTime(unittest.TestCase):
def test_format_time(self):
- self.assertEqual(format_time("", {}), "")
+ self.assertEqual(format_time("", {}), None)
self.assertEqual(format_time(" ", {}), " ")
mapping = {"a": "b", "aa": "c"}
self.assertEqual(format_time("a", mapping), "b")