pkg/front_end/testcases/patterns/simple_pattern_for_statements.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.

test1(dynamic x) {
  for (var [int i] = x; true;) {
    return i;
  }
}

main() {
  expectEquals(test1([0]), 0);
  expectThrows(() => test1([]));
}

expectEquals(x, y) {
  if (x != y) {
    throw "Expected '${x}' to be equal to '${y}'.";
  }
}

expectThrows(void Function() f) {
  bool hasThrown = true;
  try {
    f();
    hasThrown = false;
  } catch (e) {}
  if (!hasThrown) {
    throw "Expected function to throw.";
  }
}