LibTest/core/Iterable/forEach_A02_t01.test.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.

/// @assertion abstract void forEach(void f(E element))
/// Throws an exception or error if the argument 
/// is null or is not a function and doesn't have a call() method with an
/// appropriate signature.
/// @needsreview undocumented
/// @description Checks that something is thrown if the list isn't empty and the
/// argument is null or the argument is not-null, but incompatible with the
/// required function type.
/// @author pagolubev

library forEach_A02_t01;
import "../../../Utils/expect.dart";

check(list, arg) {
  Expect.throws(() => list.forEach(arg));
}

test(Iterable create([Iterable content])) {
  check(create([1]), 1);
  check(create([1]), null);
  check(create([1]), "");
  check(create([1]), 3.14);
}