[geometric] Add unittest for send_uv (#46948)

python/paddle/fluid/tests/unittests/test_graph_send_uv_op.py

@@ -269,3 +269,7 @@ class API_GeometricSendUVTest(unittest.TestCase):
     def test_api_eager_dygraph(self):
         with _test_eager_guard():
             self.test_compute_all_dygraph()
+
+
+if __name__ == "__main__":
+    unittest.main()