fix: pass through route-to-leader option in dbapi (#1223)

* fix: pass through route-to-leader option in dbapi

The route-to-leader option given to the dbapi connection was not passed
on to the actual Spanner client.

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Sri Harsha CH <57220027+harshachinta@users.noreply.github.com>

.kokoro/docker/docs/requirements.txt

@@ -4,39 +4,39 @@
 #
 #    pip-compile --allow-unsafe --generate-hashes requirements.in
 #
-argcomplete==3.5.1 \
-    --hash=sha256:1a1d148bdaa3e3b93454900163403df41448a248af01b6e849edc5ac08e6c363 \
-    --hash=sha256:eb1ee355aa2557bd3d0145de7b06b2a45b0ce461e1e7813f5d066039ab4177b4
+argcomplete==3.4.0 \
+    --hash=sha256:69a79e083a716173e5532e0fa3bef45f793f4e61096cf52b5a42c0211c8b8aa5 \
+    --hash=sha256:c2abcdfe1be8ace47ba777d4fce319eb13bf8ad9dace8d085dcad6eded88057f
     # via nox
-colorlog==6.9.0 \
-    --hash=sha256:5906e71acd67cb07a71e779c47c4bcb45fb8c2993eebe9e5adcd6a6f1b283eff \
-    --hash=sha256:bfba54a1b93b94f54e1f4fe48395725a3d92fd2a4af702f6bd70946bdc0c6ac2
+colorlog==6.8.2 \
+    --hash=sha256:3e3e079a41feb5a1b64f978b5ea4f46040a94f11f0e8bbb8261e3dbbeca64d44 \
+    --hash=sha256:4dcbb62368e2800cb3c5abd348da7e53f6c362dda502ec27c560b2e58a66bd33
     # via nox
-distlib==0.3.9 \
-    --hash=sha256:47f8c22fd27c27e25a65601af709b38e4f0a45ea4fc2e710f65755fa8caaaf87 \
-    --hash=sha256:a60f20dea646b8a33f3e7772f74dc0b2d0772d2837ee1342a00645c81edf9403
+distlib==0.3.8 \
+    --hash=sha256:034db59a0b96f8ca18035f36290806a9a6e6bd9d1ff91e45a7f172eb17e51784 \
+    --hash=sha256:1530ea13e350031b6312d8580ddb6b27a104275a31106523b8f123787f494f64
     # via virtualenv
-filelock==3.16.1 \
-    --hash=sha256:2082e5703d51fbf98ea75855d9d5527e33d8ff23099bec374a134febee6946b0 \
-    --hash=sha256:c249fbfcd5db47e5e2d6d62198e565475ee65e4831e2561c8e313fa7eb961435
+filelock==3.15.4 \
+    --hash=sha256:2207938cbc1844345cb01a5a95524dae30f0ce089eba5b00378295a17e3e90cb \
+    --hash=sha256:6ca1fffae96225dab4c6eaf1c4f4f28cd2568d3ec2a44e15a08520504de468e7
     # via virtualenv
-nox==2024.10.9 \
-    --hash=sha256:1d36f309a0a2a853e9bccb76bbef6bb118ba92fa92674d15604ca99adeb29eab \
-    --hash=sha256:7aa9dc8d1c27e9f45ab046ffd1c3b2c4f7c91755304769df231308849ebded95
+nox==2024.4.15 \
+    --hash=sha256:6492236efa15a460ecb98e7b67562a28b70da006ab0be164e8821177577c0565 \
+    --hash=sha256:ecf6700199cdfa9e5ea0a41ff5e6ef4641d09508eda6edb89d9987864115817f
     # via -r requirements.in
 packaging==24.1 \
     --hash=sha256:026ed72c8ed3fcce5bf8950572258698927fd1dbda10a5e981cdf0ac37f4f002 \
     --hash=sha256:5b8f2217dbdbd2f7f384c41c628544e6d52f2d0f53c6d0c3ea61aa5d1d7ff124
     # via nox
-platformdirs==4.3.6 \
-    --hash=sha256:357fb2acbc885b0419afd3ce3ed34564c13c9b95c89360cd9563f73aa5e2b907 \
-    --hash=sha256:73e575e1408ab8103900836b97580d5307456908a03e92031bab39e4554cc3fb
+platformdirs==4.2.2 \
+    --hash=sha256:2d7a1657e36a80ea911db832a8a6ece5ee53d8de21edd5cc5879af6530b1bfee \
+    --hash=sha256:38b7b51f512eed9e84a22788b4bce1de17c0adb134d6becb09836e37d8654cd3
     # via virtualenv
-tomli==2.0.2 \
-    --hash=sha256:2ebe24485c53d303f690b0ec092806a085f07af5a5aa1464f3931eec36caaa38 \
-    --hash=sha256:d46d457a85337051c36524bc5349dd91b1877838e2979ac5ced3e710ed8a60ed
+tomli==2.0.1 \
+    --hash=sha256:939de3e7a6161af0c887ef91b7d41a53e7c5a1ca976325f429cb46ea9bc30ecc \
+    --hash=sha256:de526c12914f0c550d15924c62d72abc48d6fe7364aa87328337a31007fe8a4f
     # via nox
-virtualenv==20.27.1 \
-    --hash=sha256:142c6be10212543b32c6c45d3d3893dff89112cc588b7d0879ae5a1ec03a47ba \
-    --hash=sha256:f11f1b8a29525562925f745563bfd48b189450f61fb34c4f9cc79dd5aa32a1f4
+virtualenv==20.26.3 \
+    --hash=sha256:4c43a2a236279d9ea36a0d76f98d84bd6ca94ac4e0f4a3b9d46d05e10fea542a \
+    --hash=sha256:8cc4a31139e796e9a7de2cd5cf2489de1217193116a8fd42328f1bd65f434589
     # via nox

google/cloud/spanner_dbapi/connection.py

@@ -712,14 +712,14 @@ def connect(
                 credentials,
                 project=project,
                 client_info=client_info,
-                route_to_leader_enabled=True,
+                route_to_leader_enabled=route_to_leader_enabled,
             )
         else:
             client = spanner.Client(
                 project=project,
                 credentials=credentials,
                 client_info=client_info,
-                route_to_leader_enabled=True,
+                route_to_leader_enabled=route_to_leader_enabled,
             )
     else:
         if project is not None and client.project != project:

tests/unit/spanner_dbapi/test_connect.py

@@ -51,6 +51,12 @@ def test_w_implicit(self, mock_client):
 
         self.assertIs(connection.instance, instance)
         client.instance.assert_called_once_with(INSTANCE)
+        mock_client.assert_called_once_with(
+            project=mock.ANY,
+            credentials=mock.ANY,
+            client_info=mock.ANY,
+            route_to_leader_enabled=True,
+        )
 
         self.assertIs(connection.database, database)
         instance.database.assert_called_once_with(DATABASE, pool=None)
@@ -86,7 +92,7 @@ def test_w_explicit(self, mock_client):
             project=PROJECT,
             credentials=credentials,
             client_info=mock.ANY,
-            route_to_leader_enabled=True,
+            route_to_leader_enabled=False,
         )
         client_info = mock_client.call_args_list[0][1]["client_info"]
         self.assertEqual(client_info.user_agent, USER_AGENT)