pgsql-test/esm/seed/json.js

pgsql-test offers isolated, role-aware, and rollback-friendly PostgreSQL environments for integration tests — giving developers realistic test coverage without external state pollution

export function json(data) {
    return {
        async seed(ctx) {
            const { pg } = ctx;
            for (const [table, rows] of Object.entries(data)) {
                if (!Array.isArray(rows) || rows.length === 0)
                    continue;
                const columns = Object.keys(rows[0]);
                const placeholders = columns.map((_, i) => `$${i + 1}`).join(', ');
                const sql = `INSERT INTO ${table} (${columns.join(', ')}) VALUES (${placeholders})`;
                for (const row of rows) {
                    const values = columns.map((c) => row[c]);
                    await pg.query(sql, values);
                }
            }
        }
    };
}