skip dbapi test which depends on session delete

Author: rahul2393

tests/system/test_dbapi.py

@@ -32,7 +32,10 @@
 from google.cloud.spanner_v1 import JsonObject
 from google.cloud.spanner_v1 import gapic_version as package_version
 from google.api_core.datetime_helpers import DatetimeWithNanoseconds
+
+from google.cloud.spanner_v1.database_sessions_manager import TransactionType
 from . import _helpers
+from tests._helpers import is_multiplexed_enabled
 
 DATABASE_NAME = "dbapi-txn"
 SPANNER_RPC_PREFIX = "/google.spanner.v1.Spanner/"
@@ -169,6 +172,12 @@ def test_commit_exception(self):
         """Test that if exception during commit method is caught, then
         subsequent operations on same Cursor and Connection object works
         properly."""
+
+        if is_multiplexed_enabled(transaction_type=TransactionType.READ_WRITE):
+            pytest.skip(
+                "Mutiplexed session can't be deleted and this test relies on session deletion."
+            )
+
         self._execute_common_statements(self._cursor)
         # deleting the session to fail the commit
         self._conn._session.delete()