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>
38 lines
1.3 KiB
Dart
38 lines
1.3 KiB
Dart
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'dart:async';
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import 'package:expect/async_helper.dart';
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import 'package:expect/expect.dart';
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const ms = const Duration(milliseconds: 1);
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expectGTE(min, actual, msg) {
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if (actual >= min) return;
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Expect.fail(msg.replaceAll('{0}', "$min").replaceAll('{1}', "$actual"));
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}
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main() {
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int interval = 100;
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// Most browsers can trigger timers too early. Test data shows instances where
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// timers fire even 15ms early. We add a safety margin to prevent flakiness
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// when running this test on affected platforms.
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int safetyMargin = const bool.fromEnvironment('dart.library.js') ? 40 : 0;
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asyncStart();
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var sw = new Stopwatch()..start();
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int nextTick = 1;
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new Timer.periodic(ms * interval, (t) {
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expectGTE(nextTick, t.tick, "tick {1} before expect next tick {0}.");
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nextTick = t.tick + 1; // Always increment tick by at least one.
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int time = sw.elapsedMilliseconds;
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int minTime = interval * t.tick - safetyMargin;
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expectGTE(minTime, time, "Actual time {1} before {0} at tick ${t.tick}");
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if (t.tick > 20) {
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t.cancel();
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asyncEnd();
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}
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});
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}
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