// 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.

/// @assertion The class of a function literal implements the built-in class
/// Function.
/// @description Checks that a function literal implements interface Function.
/// @author msyabro

import '../../../Utils/expect.dart';

main() {
  Expect.isTrue(() {} is Function);
  Expect.isTrue((() => 1) is Function);
  Expect.isTrue(((p1, p2) {}) is Function);
  Expect.isTrue(((p1, [int? p2]) {}) is Function);
  Expect.isTrue(((p1, {int p2: 1}) {}) is Function);
  Expect.runtimeIsType<Function>(() {});
  Expect.runtimeIsType<Function>((() => 1));
  Expect.runtimeIsType<Function>(((p1, p2) {}));
  Expect.runtimeIsType<Function>(((p1, [int? p2]) {}));
  Expect.runtimeIsType<Function>(((p1, {int p2: 1}) {}));
}