final bool inSoundMode = <int?>[] is! List<int>;
main() {}

class Class1 {
  final int field1;
  final int field2;
  Class1.positional([this.field1 = 1, this.field2 = 2]);
  factory Class1.redirectPositionalSame([int field1, int field2]) =
      Class1.positional;
  factory Class1.redirectPositionalFewer1([int field1]) = Class1.positional;
  factory Class1.redirectPositionalFewer2() = Class1.positional;
  Class1.named({this.field1 = 1, this.field2 = 2});
  factory Class1.redirectNamedSame({int field1, int field2}) = Class1.named;
  factory Class1.redirectNamedReorder({int field2, int field1}) = Class1.named;
  factory Class1.redirectNamedFewer1({int field1}) = Class1.named;
  factory Class1.redirectNamedFewer2({int field2}) = Class1.named;
  factory Class1.redirectNamedFewer3() = Class1.named;
}

testDefaultValues() {}
expect(expected, actual) {}
throws(Function() f, {bool inSoundModeOnly: false}) {}