Function apply_v3

tests/storage_suite/migration_test.rs:409–419

Applies the V3 additions on top of V2 (complexity columns).

(conn: &Connection)

/// Applies the V3 additions on top of V2 (complexity columns).
async fn apply_v3(conn: &Connection) {
    conn.execute_batch(
        "ALTER TABLE nodes ADD COLUMN branches INTEGER NOT NULL DEFAULT 0;
         ALTER TABLE nodes ADD COLUMN loops INTEGER NOT NULL DEFAULT 0;
         ALTER TABLE nodes ADD COLUMN returns INTEGER NOT NULL DEFAULT 0;
         ALTER TABLE nodes ADD COLUMN max_nesting INTEGER NOT NULL DEFAULT 0;",
    )
    .await
    .expect("failed to apply v3");
    set_user_version(conn, 3).await;
}

/// Applies the V4 additions on top of V3 (safety metric columns).
async fn apply_v4(conn: &Connection) {