LanguageFeatures/Patterns/execution_pattern_for_element_A01_t01.dart

// Copyright (c) 2023, 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.

/// @assertion
/// Likewise, a collection element of the form:
///
/// for (<patternVariableDeclaration>; <condition>; <increment>) <element>
/// Is executed like a traditional for loop though is more likely to declare
/// multiple variables
///
/// @description Check that a pattern-for element is executed like a traditional
/// for loop. Test variable and identifier subpatterns of a parenthesized
/// pattern
/// @author sgrekhov22@gmail.com

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

main() {
  var list1 = [
    0,
    for (var (int i) = 1; i <= 3; (i) = (i + 1)) i,
    4
  ];
  Expect.listEquals([0, 1, 2, 3, 4], list1);
  int j = -1;
  var list2 = [
    0,
    for ((j) = 1; j < 4; (j) = (j + 1)) j,
    4
  ];
  Expect.listEquals([0, 1, 2, 3, 4], list2);
}