LibTest/core/DateTime/hashCode_A01_t01.dart

// Copyright (c) 2011, 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 final int hashCode
/// Get a hash code for this object.
/// docs inherited from Object:
/// All objects have hash codes. Hash codes are guaranteed to be the same for
/// objects that are equal when compared using the equality operator ==.
/// @description Checks that hashCode is int.
/// Checks that hashcodes are the same for equal objects. 
/// @author kaigorodov

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

check(t1, t2) {
  DateTime date1 = new DateTime.fromMillisecondsSinceEpoch(t1, isUtc: true);
  DateTime date2 = new DateTime.fromMillisecondsSinceEpoch(t2, isUtc: true);
  var h1 = date1.hashCode;
  var h2 = date2.hashCode;
  Expect.isTrue(h1 is int);
  Expect.isTrue(h2 is int);
  Expect.runtimeIsType<int>(h1);
  Expect.runtimeIsType<int>(h2);
  if (date1 == date2) {
    Expect.equals(h1, h2);
  }
}

main() {
  check(0, 0);
  check(1, 1);
  check(6031769, 6031769);
  check(603176900, 603176900);
  check(603176900009, 603176900009);
}