LibTest/typed_data/Float64x2List/asMap_A01_t02.dart

// Copyright (c) 2017, 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 Map<int, E> asMap()
 * Returns an unmodifiable Map view of this.
 * The map uses the indices of this list as keys and the corresponding objects
 * as values.
 * @description Checks that returned map id unmodifiable.
 * @author ngl@unipro.ru
 */

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

Float64x2 f64x2(v) => new Float64x2.splat(v);

void check(List<Float64x2> list) {
  var l = new Float64x2List.fromList(list);
  var m = l.asMap();

  Expect.throws(() {
    m[0] = f64x2(21.0);
  });
}

main() {
  check([f64x2(1.0)]);
  check([f64x2(1.0), f64x2(1.0)]);
  check([
    f64x2(5.0), f64x2(6.0), f64x2(7.0), f64x2(8.0), f64x2(9.0),
    f64x2(10.0), f64x2(11.0), f64x2(12.0), f64x2(13.0), f64x2(14.0),
    f64x2(15.0), f64x2(16.0), f64x2(17.0)
  ]);
}