sqlite: Add an upgrade script to database version 2

Right now it doesn't do any extra changes to the database besides
bumping the user_version to '2'. I'll fill it out over the next several
commits.

Signed-off-by: Anna Schumaker <anna@nowheycreamery.com>

tests/test_sqlite.py

@@ -26,6 +26,8 @@ class TestConnection(unittest.TestCase):
                          pathlib.Path(xfstestsdb.__file__).parent / "scripts")
         self.assertEqual(xfstestsdb.sqlite.SQL_V1_SCRIPT,
                          xfstestsdb.sqlite.SQL_SCRIPTS / "xfstestsdb.sql")
+        self.assertEqual(xfstestsdb.sqlite.SQL_V2_SCRIPT,
+                         xfstestsdb.sqlite.SQL_SCRIPTS / "upgrade-v2.sql")
 
     def test_foreign_keys(self):
         """Test that foreign key constraints are enabled."""
@@ -35,7 +37,7 @@ class TestConnection(unittest.TestCase):
     def test_version(self):
         """Test checking the database schema version."""
         cur = self.sql("PRAGMA user_version")
-        self.assertEqual(cur.fetchone()["user_version"], 1)
+        self.assertEqual(cur.fetchone()["user_version"], 2)
 
     def test_connection(self):
         """Check that the connection manager is initialized properly."""

xfstestsdb/scripts/upgrade-v2.sql

@@ -0,0 +1,3 @@
+/* Copyright 2023 (c) Anna Schumaker */
+
+PRAGMA user_version = 2;

xfstestsdb/sqlite.py

@@ -12,6 +12,7 @@ DATABASE = ":memory:" if "unittest" in sys.modules else DATA_FILE
 
 SQL_SCRIPTS = pathlib.Path(__file__).parent / "scripts"
 SQL_V1_SCRIPT = SQL_SCRIPTS / "xfstestsdb.sql"
+SQL_V2_SCRIPT = SQL_SCRIPTS / "upgrade-v2.sql"
 
 
 class Connection:
@@ -28,6 +29,9 @@ class Connection:
         match self("PRAGMA user_version").fetchone()["user_version"]:
             case 0:
                 self.executescript(SQL_V1_SCRIPT)
+                self.executescript(SQL_V2_SCRIPT)
+            case 1:
+                self.executescript(SQL_V2_SCRIPT)
 
     def __call__(self, statement: str,
                  *args, **kwargs) -> sqlite3.Cursor | None: