LibTest/typed_data/Float32List/retainWhere_A01_t01.dart

// Copyright (c) 2013, 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 void retainWhere(bool test(E element))
 * Removes all objects from this list that fail to satisfy test.
 * An object o satisfies test if test(o) is true.
 * Throws an UnsupportedError if this is a fixed-length list.
 * @description Checks that [UnsupportedError] is thrown since [Float32List] is
 * a fixed-size list.
 * @note undocumented
 * @author msyabro
 */

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

check(List<double> list) {
  var l = new Float32List.fromList(list);
  var length = l.length;

  Expect.throws(
          () { l.retainWhere((e) => false); }, (e) => e is UnsupportedError);
  Expect.equals(length, l.length);

  Expect.throws(
          () { l.retainWhere((e) => true); }, (e) => e is UnsupportedError);
  Expect.equals(length, l.length);
}

main() {
  check([]);
  check([1.0]);
  check([1.0, 2.0, 3.0, 4.0, 5.0]);
}