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-rw-r--r--src/python/grpcio_tests/tests/unit/_invalid_metadata_test.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/python/grpcio_tests/tests/unit/_invalid_metadata_test.py b/src/python/grpcio_tests/tests/unit/_invalid_metadata_test.py
index 9771764635..0ff49490d5 100644
--- a/src/python/grpcio_tests/tests/unit/_invalid_metadata_test.py
+++ b/src/python/grpcio_tests/tests/unit/_invalid_metadata_test.py
@@ -130,6 +130,9 @@ class InvalidMetadataTest(unittest.TestCase):
self._stream_stream(request_iterator, metadata=metadata)
self.assertIn(expected_error_details, str(exception_context.exception))
+ def testInvalidMetadata(self):
+ self.assertRaises(TypeError, self._unary_unary, b'', metadata=42)
+
if __name__ == '__main__':
logging.basicConfig()