Function runTests

test/parallel/test-fs-write-optional-params.js:60–108

(fd)

const testValid = util.promisify(testValidCb);

async function runTests(fd) {
  // Test if first argument is not wrongly interpreted as ArrayBufferView|string
  for (const badBuffer of [
    undefined, null, true, 42, 42n, Symbol('42'), NaN, [], () => {},
    Promise.resolve(new Uint8Array(1)),
    common.mustNotCall(),
    common.mustNotMutateObjectDeep({}),
    {},
    { buffer: 'amNotParam' },
    { string: 'amNotParam' },
    { buffer: new Uint8Array(1).buffer },
    new Date(),
    new String('notPrimitive'),
    { [Symbol.toPrimitive]: (hint) => 'amObject' },
    { toString() { return 'amObject'; } },
  ]) {
    await testInvalid(fd, 'ERR_INVALID_ARG_TYPE', badBuffer, {});
  }

  // First argument (buffer or string) is mandatory
  await testInvalid(fd, 'ERR_INVALID_ARG_TYPE', undefined, undefined);

  // Various invalid options
  await testInvalid(fd, 'ERR_OUT_OF_RANGE', buffer, { length: 5 });
  await testInvalid(fd, 'ERR_OUT_OF_RANGE', buffer, { offset: 5 });
  await testInvalid(fd, 'ERR_OUT_OF_RANGE', buffer, { length: 1, offset: 3 });
  await testInvalid(fd, 'ERR_OUT_OF_RANGE', buffer, { length: -1 });
  await testInvalid(fd, 'ERR_OUT_OF_RANGE', buffer, { offset: -1 });
  await testInvalid(fd, 'ERR_INVALID_ARG_TYPE', buffer, { offset: false });
  await testInvalid(fd, 'ERR_INVALID_ARG_TYPE', buffer, { offset: true });
  await testInvalid(fd, 'ERR_INVALID_ARG_TYPE', buffer, true);
  await testInvalid(fd, 'ERR_INVALID_ARG_TYPE', buffer, '42');
  await testInvalid(fd, 'ERR_INVALID_ARG_TYPE', buffer, Symbol('42'));

  // Test compatibility with fs.read counterpart
  for (const [ index, options ] of [
    null,
    {},
    { length: 1 },
    { position: 5 },
    { length: 1, position: 5 },
    { length: 1, position: -1, offset: 2 },
    { length: null },
    { position: null },
    { offset: 1 },
  ].entries()) {
    await testValid(buffer, options, index);
  }
}

fs.open(destInvalid, 'w+', common.mustSucceed(async (fd) => {
  runTests(fd).then(common.mustCall(() => { fs.close(fd, common.mustSucceed()); }));