Preserve AUTOINCREMENT through transforms

tests/test_create_table_parser.py

@@ -8,6 +8,7 @@ from sqlite_utils.create_table_parser import (
     Check,
     ColumnComments,
     ParseError,
+    parse_autoincrement,
     parse_checks,
     parse_column_comments,
 )
@@ -117,6 +118,36 @@ def test_virtual_table_has_no_checks():
     )
 
 
+@pytest.mark.parametrize(
+    "sql,expected",
+    [
+        (
+            "CREATE TABLE t(id INTEGER PRIMARY KEY AUTOINCREMENT, value TEXT)",
+            "id",
+        ),
+        (
+            'CREATE TABLE t("quoted id" INTEGER PRIMARY KEY AUTOINCREMENT)',
+            "quoted id",
+        ),
+        (
+            'CREATE TABLE t("autoincrement" INTEGER PRIMARY KEY, value TEXT)',
+            None,
+        ),
+        (
+            "CREATE TABLE t(id INTEGER PRIMARY KEY /* AUTOINCREMENT */, value TEXT)",
+            None,
+        ),
+        (
+            "CREATE TABLE t(id INTEGER PRIMARY KEY, value TEXT CHECK(value != 'AUTOINCREMENT'))",
+            None,
+        ),
+    ],
+)
+def test_parse_autoincrement(sql, expected):
+    sqlite3.connect(":memory:").execute(sql)
+    assert parse_autoincrement(sql) == expected
+
+
 comment_or_space = st.sampled_from(
     [
         " ",

tests/test_transform.py

@@ -1053,6 +1053,24 @@ def test_transform_with_unique_constraint_implicit_index(fresh_db):
     )
 
 
+def test_transform_preserves_autoincrement_and_sequence(fresh_db):
+    fresh_db.execute(
+        "CREATE TABLE entries (id INTEGER PRIMARY KEY AUTOINCREMENT, value TEXT)"
+    )
+    entries = fresh_db.table("entries")
+    entries.insert_all(({"value": "one"}, {"value": "two"}))
+    entries.delete(2)
+
+    entries.transform(rename={"value": "label"})
+
+    assert "PRIMARY KEY AUTOINCREMENT" in entries.schema
+    entries.insert({"label": "three"})
+    assert list(entries.rows) == [
+        {"id": 1, "label": "one"},
+        {"id": 3, "label": "three"},
+    ]
+
+
 def test_transform_preserves_view(fresh_db):
     # https://github.com/simonw/sqlite-utils/issues/831
     dogs = fresh_db.table("dogs")