Lasse R.H. Nielsen
f8086c81ae
Collects files from `package:async_helper` and `tests/language` that are generally useful, so that all test-related helpers are in `package:expect`. Moves the two libraries from `package:async_helper` into `package:expect`, and the `tests/language/static_type_helper.dart` file too. Deprecates `async_minitest.dart`, to follow `minitest.dart`, expecting the Flutter use of it to have been fixed to not break on deprecation (I believe Flutter no longer breaks builds on deprecations at all). Patch 1 is the actual change. Patch 2+4+8 is changing all existing references to the files. Patch 6 ignores deprecation in files still using `async_minitest.dart`. 3+5+7+9 are updating this text to make the numbers match. Then it's just test-expectations and small tweaks from there. Change-Id: I1b665135b5fef9b9a0c3b340ffe9daf874d0174c Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/373120 Reviewed-by: Nate Bosch <nbosch@google.com> Reviewed-by: Devon Carew <devoncarew@google.com> Commit-Queue: Lasse Nielsen <lrn@google.com>
55 lines
1.7 KiB
Dart
55 lines
1.7 KiB
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.
|
|
|
|
library timer_test;
|
|
|
|
import 'dart:async';
|
|
import 'package:expect/async_helper.dart';
|
|
import 'package:expect/expect.dart';
|
|
|
|
const ms = const Duration(milliseconds: 1);
|
|
|
|
expectGTE(min, actual, msg) {
|
|
if (actual >= min) return;
|
|
Expect.fail(msg.replaceAll('{0}', "$min").replaceAll('{1}', "$actual"));
|
|
}
|
|
|
|
main() {
|
|
int interval = 100;
|
|
// Most browsers can trigger timers too early. Test data shows instances where
|
|
// timers fire even 15ms early. We add a safety margin to prevent flakiness
|
|
// when running this test on affected platforms.
|
|
int safetyMargin = const bool.fromEnvironment('dart.library.js') ? 40 : 0;
|
|
|
|
asyncStart();
|
|
var sw = new Stopwatch()..start();
|
|
int nextTick = 1;
|
|
bool running = true;
|
|
var timer = new Timer.periodic(ms * interval, (t) {
|
|
expectGTE(nextTick, t.tick, "tick {1} before expect next tick {0}.");
|
|
nextTick += 1;
|
|
int time = sw.elapsedMilliseconds;
|
|
int minTime = interval * t.tick - safetyMargin;
|
|
expectGTE(minTime, time, "Actual time {1} before {0} at tick ${t.tick}");
|
|
if (t.tick > 20) {
|
|
running = false;
|
|
t.cancel();
|
|
asyncEnd();
|
|
}
|
|
});
|
|
|
|
/// Test that ticks still happen when the rest of the system is slow.
|
|
delay() {
|
|
int time = new DateTime.now().millisecondsSinceEpoch;
|
|
int limit = time + 3 * interval;
|
|
while (new DateTime.now().millisecondsSinceEpoch < limit) {
|
|
// Idle.
|
|
}
|
|
nextTick = timer.tick + 2; // At least increment by two, probably more.
|
|
if (running) Timer.run(delay);
|
|
}
|
|
|
|
Timer.run(delay);
|
|
}
|