add unit tests for the Python 3.12 autocommit transaction behaviour feature

tests/test_autocommit.py

@@ -0,0 +1,38 @@
+import pytest
+
+
+def test_executescript_rollback(fresh_db):
+    if not hasattr(fresh_db.conn, "autocommit"):
+        pytest.skip("No autocommit support")
+
+    fresh_db.conn.autocommit = False
+    fresh_db.executescript("CREATE TABLE [test_table] ([id] INTEGER);")
+    assert fresh_db.table_names() == ["test_table"]
+    fresh_db.conn.rollback()
+    assert fresh_db.table_names() == []
+
+
+def test_explicit_create_table_rollback(fresh_db):
+    if not hasattr(fresh_db.conn, "autocommit"):
+        pytest.skip("No autocommit support")
+
+    fresh_db.conn.autocommit = False
+    fresh_db.create_table("test_table", {"id": int})
+    assert fresh_db.table_names() == ["test_table"]
+    fresh_db.conn.rollback()
+    assert fresh_db.table_names() == []
+
+
+@pytest.mark.parametrize("use_table_factory", [True, False])
+def test_create_table_rollback(fresh_db, use_table_factory):
+    if not hasattr(fresh_db.conn, "autocommit"):
+        pytest.skip("No autocommit support")
+
+    fresh_db.conn.autocommit = False
+    if use_table_factory:
+        fresh_db.table("test_table").create({"id": int})
+    else:
+        fresh_db["test_table"].create({"id": int})
+    assert fresh_db.table_names() == ["test_table"]
+    fresh_db.conn.rollback()
+    assert fresh_db.table_names() == []