Function testLocked

test/parallel/test-fs-promises-file-handle-pullsync.js:240–259

()

// =============================================================================

async function testLocked() {
  const filePath = path.join(tmpDir, 'pullsync-locked.txt');
  fs.writeFileSync(filePath, 'lock test');

  const fh = await open(filePath, 'r');
  const iter = fh.pullSync()[Symbol.iterator]();
  iter.next(); // Start iteration, handle is locked

  assert.throws(() => fh.pullSync(), {
    code: 'ERR_INVALID_STATE',
  });

  assert.throws(() => fh.pull(), {
    code: 'ERR_INVALID_STATE',
  });

  // Finish iteration to unlock
  while (!iter.next().done) { /* drain */ }
  await fh.close();
}

// =============================================================================
// Empty file