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>
79 lines
2.0 KiB
Dart
79 lines
2.0 KiB
Dart
// Copyright (c) 2019, 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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void main() async {
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var stack = StackTrace.fromString("some stack trace");
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var error = MyError();
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asyncStart();
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{
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// There is an error before any element.
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var stream = Stream<int>.error(error, stack);
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try {
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await stream.first;
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Expect.fail("didn't throw");
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} on MyError catch (e, s) {
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Expect.identical(error, e);
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Expect.identical(stack, s);
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}
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}
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{
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// There is an error before any element.
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var stream = Stream<int>.error(error, stack);
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try {
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await for (var _ in stream) {}
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Expect.fail("didn't throw");
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} on MyError catch (e, s) {
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Expect.identical(error, e);
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Expect.identical(stack, s);
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}
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}
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{
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// There is no second element or error.
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var stream = Stream<int>.error(error, stack);
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int errorCount = 0;
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var noErrorStream = stream.handleError((e, s) {
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Expect.identical(error, e);
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Expect.identical(stack, s);
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errorCount++;
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}, test: (o) => o is MyError);
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Expect.isTrue(await noErrorStream.isEmpty);
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Expect.equals(1, errorCount);
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}
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{
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// Works with subscriptions and pause-resume.
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var stream = Stream<int>.error(error, stack);
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int errorCount = 0;
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var onDone = Completer();
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var sub = stream.listen((v) {
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Expect.fail("Value event");
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}, onError: (e, s) {
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Expect.identical(error, e);
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Expect.identical(stack, s);
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errorCount++;
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}, onDone: () {
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Expect.equals(1, errorCount);
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onDone.complete();
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});
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sub.pause();
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await Future.delayed(Duration(milliseconds: 10));
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Expect.equals(0, errorCount);
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Expect.isFalse(onDone.isCompleted);
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sub.resume();
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await onDone.future;
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}
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asyncEnd();
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}
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class MyError {}
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