test/parallel/test-fs-buffertype-writesync.js


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'use strict';
require('../common');

// This test ensures that writeSync throws for invalid data input.

const assert = require('assert');
const fs = require('fs');

[
  true, false, 0, 1, Infinity, () => {}, {}, [], undefined, null
].forEach((value) => {
  assert.throws(
    () => fs.writeSync(1, value),
    { message: /"buffer"/, code: 'ERR_INVALID_ARG_TYPE' }
  );
});