Function checkDefensiveMode

test/parallel/test-sqlite-config.js:8–21

(db)

const { DatabaseSync } = require('node:sqlite');

function checkDefensiveMode(db) {
  function journalMode() {
    return db.prepare('PRAGMA journal_mode').get().journal_mode;
  }

  assert.strictEqual(journalMode(), 'memory');
  db.exec('PRAGMA journal_mode=OFF');

  switch (journalMode()) {
    case 'memory': return true; // journal_mode unchanged, defensive mode must be active
    case 'off': return false;  // journal_mode now 'off', so defensive mode not active
    default: throw new Error('unexpected journal_mode');
  }
}

test('by default, defensive mode is on', (t) => {
  const db = new DatabaseSync(':memory:');