LibTest/typed_data/Float64x2List/skipWhile_A02_t01.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 Iterable<E> skipWhile(bool test(E value))
/// ...
/// The filtering happens lazily.
/// @description Checks that the filtering happens lazily.
/// @author ngl@unipro.ru


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

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

main() {
  Float64x2List l = new Float64x2List.fromList(
      [f64x2(0.0), f64x2(1.0), f64x2(2.0), f64x2(3.0), f64x2(4.0)]);
  var count = 0;
  test1(e) {
    count++;
    return false;
  }
  bool test2(Float64x2 e) {
    count++;
    return e.x < 1;
  }
  var res = l.skipWhile(test1);
  Expect.equals(0, count);
  res.elementAt(0);
  Expect.equals(1, count);
  res.elementAt(3);
  Expect.equals(2, count);
  res.elementAt(1);
  Expect.equals(3, count);

  count = 0;
  res = l.skipWhile(test2);
  Expect.equals(0, count);
  res.elementAt(0);
  Expect.equals(2, count);
  res.elementAt(3);
  Expect.equals(4, count);
  res.elementAt(1);
  Expect.equals(6, count);
}