test: add test with 'roles' table (#520)

* test: add test with 'roles' table

Add a test that verifies that a table with the same name as a
system view can be used.

* chore: fix linting

Author: olavloite

test/system/test_basics.py

@@ -12,6 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from typing import Optional
 from sqlalchemy import (
     text,
     Table,
@@ -90,6 +91,30 @@ def test_reflect(self, connection):
         eq_(1, len(dialect_options["storing"]))
         eq_("alternative_name", dialect_options["storing"][0])
 
+    def test_table_name_overlapping_with_system_table(self, connection):
+        class Base(DeclarativeBase):
+            pass
+
+        class Role(Base):
+            __tablename__ = "roles"
+            id: Mapped[int] = mapped_column(Integer, primary_key=True)
+            name: Mapped[str] = mapped_column(String(100), nullable=True)
+            type: Mapped[str] = mapped_column(String(100), nullable=True)
+            description: Mapped[Optional[str]] = mapped_column(String(512))
+
+        engine = connection.engine
+        Base.metadata.create_all(engine)
+
+        with Session(engine) as session:
+            role = Role(
+                id=1,
+                name="Test",
+                type="Test",
+                description="Test",
+            )
+            session.add(role)
+            session.commit()
+
     def test_orm(self, connection):
         class Base(DeclarativeBase):
             pass