LibTest/typed_data/Float64x2List/single_A02_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.

// @dart = 2.9

/// @assertion E single
/// ...
/// Throws a StateError if this is empty or has more than one element.
/// @description Checks that a StateError is thrown if this has more than one
/// element.
/// @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);
  try {
    l.single;
    Expect.fail("StateError is expected");
  } on StateError {}
}

main() {
  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)
  ]);
}