Language/Functions/Formal_Parameters/Optional_Formals/syntax_t02.dart

// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

// @dart = 2.9

/// @assertion Optional parameters may be specified and provided with default
/// values.
/// defaultFormalParameter:
///   normalFormalParameter ('=' expression)?
/// ;
/// defaultNamedParameter:
///   normalFormalParameter (':' expression)?
/// ;
/// @description Checks that optional arguments are assigned their default values
/// when not specified in the invocation expression.
/// @author msyabro
/// @reviewer kaigorodov
/// @reviewer rodionov

import "../../../../Utils/expect.dart";

void func([var x = 1, var y = 2]) {
  Expect.equals(1, x);
  Expect.equals(2, y);
}

void func2({var x: 1, var y: 2}) {
  Expect.equals(1, x);
  Expect.equals(2, y);
}

main() {
  func();
  func(1);

  func2();
  func2(x: 1);
  func2(y: 2);
}