LibTest/core/int/isEven_A01_t01.dart

// Copyright (c) 2016, 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 bool isEven
/// Returns true if and only if this integer is even.
/// @description Checks that this method returns true if and only if this integer
/// is even.
/// @author sgrekhov@unipro.ru

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

main() {
  Expect.isTrue(0.isEven);
  Expect.isTrue(2.isEven);
  Expect.isTrue(4.isEven);
  Expect.isTrue(6.isEven);
  Expect.isTrue(8.isEven);
  Expect.isTrue(8000000000000000.isEven);

  Expect.isTrue((-2).isEven);
  Expect.isTrue((-4).isEven);
  Expect.isTrue((-6).isEven);
  Expect.isTrue((-8).isEven);
  Expect.isTrue((-8000000000000000).isEven);

  Expect.isFalse(1.isEven);
  Expect.isFalse(3.isEven);
  Expect.isFalse(5.isEven);
  Expect.isFalse(9.isEven);
  Expect.isFalse((8000000000000000 - 1).isEven);

  Expect.isFalse((-1).isEven);
  Expect.isFalse((-3).isEven);
  Expect.isFalse((-5).isEven);
  Expect.isFalse((-9).isEven);
  Expect.isFalse((-8000000000000000 + 1).isEven);
}