dart-sdk/tests/corelib/duration_big_num_test.dart
Robert Nystrom a4d799c402 Migrate corelib/ tests starting with b-d to NNBD.
Note that cast_test.dart isn't migrated yet due to #39517.

First patch set is just copying the tests over. The second patchset has
the actual meaningful changes.

Change-Id: I89233f20187b4305a776f865cde09a984423fa4f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/125920
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
Auto-Submit: Bob Nystrom <rnystrom@google.com>
2019-12-02 23:13:10 +00:00

22 lines
715 B
Dart

// Copyright (c) 2013, 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.
import "package:expect/expect.dart";
import 'dart:math';
main() {
Duration d, d1;
d1 = new Duration(microseconds: pow(2, 53) as int);
d = d1 * 2;
Expect.equals(pow(2, 54), d.inMicroseconds);
d = d1 * 1.5;
Expect.equals(pow(2, 53).toDouble() * 1.5, d.inMicroseconds);
Expect.isTrue(d.inMicroseconds is int);
// Test that we lose precision when multiplying with a double.
d = new Duration(microseconds: (pow(2, 53) as int) + 1) * 1.0;
Expect.equals(0, d.inMicroseconds % 2);
}