/**

* SQLite backend reporting.

*

* node:sqlite (Node's built-in real SQLite) is the sole backend. Pin that

* DatabaseConnection / CodeGraph report it and come up in WAL.

*/

import { describe, it, expect, beforeEach, afterEach } from 'vitest';

import * as fs from 'fs';

import * as path from 'path';

import * as os from 'os';

import { DatabaseConnection } from '../src/db';

import { CodeGraph } from '../src';

describe('DatabaseConnection — backend reporting', () => {

let dir: string;

beforeEach(() => {

dir = fs.mkdtempSync(path.join(os.tmpdir(), 'codegraph-backend-'));

});

afterEach(() => {

if (fs.existsSync(dir)) {

fs.rmSync(dir, { recursive: true, force: true });

}

});

it('reports the node-sqlite backend in WAL for an initialized DB', () => {

const conn = DatabaseConnection.initialize(path.join(dir, 'test.db'));

expect(conn.getBackend()).toBe('node-sqlite');

expect(conn.getJournalMode()).toBe('wal');

conn.close();

});

it('CodeGraph.getBackend() delegates to the underlying DatabaseConnection', async () => {

fs.writeFileSync(path.join(dir, 'x.ts'), `export function x(): void {}\n`);

const cg = await CodeGraph.init(dir, { index: true });

try {

expect(cg.getBackend()).toBe('node-sqlite');

} finally {

cg.destroy();

}

});

});