mirror of
https://github.com/dart-lang/sdk
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b101a7d002
Change-Id: Ib33169c3e0ffc870915c189404074a1dea472546 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196548 Reviewed-by: Bob Nystrom <rnystrom@google.com> Commit-Queue: Leaf Petersen <leafp@google.com>
138 lines
3.7 KiB
Dart
138 lines
3.7 KiB
Dart
// Copyright (c) 2013, 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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// @dart = 2.9
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import 'package:expect/expect.dart';
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import 'package:async_helper/async_helper.dart';
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import 'dart:async';
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/**
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* We represent the current stack trace by an integer. From time to time we
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* increment the variable. This corresponds to a new stack trace.
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*/
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int stackTrace = 0;
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List restoredStackTrace = [];
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List events = [];
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ZoneCallback<R> debugZoneRegisterCallback<R>(
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Zone self, ZoneDelegate parent, Zone origin, R f()) {
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List savedTrace = [stackTrace]..addAll(restoredStackTrace);
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return parent.registerCallback(origin, () {
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restoredStackTrace = savedTrace;
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return f();
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});
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}
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ZoneUnaryCallback<R, T> debugZoneRegisterUnaryCallback<R, T>(
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Zone self, ZoneDelegate parent, Zone origin, R f(T arg)) {
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List savedTrace = [stackTrace]..addAll(restoredStackTrace);
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return parent.registerUnaryCallback(origin, (arg) {
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restoredStackTrace = savedTrace;
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return f(arg);
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});
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}
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T debugZoneRun<T>(Zone self, ZoneDelegate parent, Zone origin, T f()) {
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stackTrace++;
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restoredStackTrace = [];
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return parent.run(origin, f);
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}
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R debugZoneRunUnary<R, T>(
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Zone self, ZoneDelegate parent, Zone origin, R f(T arg), T arg) {
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stackTrace++;
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restoredStackTrace = [];
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return parent.runUnary(origin, f, arg);
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}
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List expectedDebugTrace;
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void debugUncaughtHandler(
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Zone self, ZoneDelegate parent, Zone origin, error, StackTrace stackTrace) {
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events.add("handling uncaught error $error");
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Expect.listEquals(expectedDebugTrace, restoredStackTrace);
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// Suppress the error and don't propagate to parent.
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}
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const DEBUG_SPECIFICATION = const ZoneSpecification(
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registerCallback: debugZoneRegisterCallback,
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registerUnaryCallback: debugZoneRegisterUnaryCallback,
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run: debugZoneRun,
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runUnary: debugZoneRunUnary,
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handleUncaughtError: debugUncaughtHandler);
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main() {
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Completer done = new Completer();
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// runGuarded calls run, captures the synchronous error (if any) and
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// gives that one to handleUncaughtError.
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Expect.identical(Zone.root, Zone.current);
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Zone forked;
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forked = Zone.current.fork(specification: DEBUG_SPECIFICATION);
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asyncStart();
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int openTests = 0;
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openTests++;
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forked.run(() {
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int forkTrace = stackTrace;
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scheduleMicrotask(() {
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int scheduleMicrotaskTrace = stackTrace;
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scheduleMicrotask(() {
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expectedDebugTrace = [scheduleMicrotaskTrace, forkTrace];
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openTests--;
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if (openTests == 0) {
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done.complete();
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}
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throw "foo";
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});
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expectedDebugTrace = [forkTrace];
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throw "bar";
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});
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});
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Expect.listEquals([], restoredStackTrace);
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Zone forked2 = forked.fork();
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Zone forked3 = forked2.fork();
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int fork2Trace;
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int fork3Trace;
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var f2;
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var globalTrace = stackTrace;
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var f = forked3.bindCallback(() {
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Expect.identical(forked3, Zone.current);
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fork2Trace = stackTrace;
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f2 = forked2.bindCallback(() {
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Expect.identical(forked2, Zone.current);
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Expect.listEquals([fork2Trace, globalTrace], restoredStackTrace);
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fork3Trace = stackTrace;
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openTests--;
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if (openTests == 0) {
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done.complete();
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}
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scheduleMicrotask(() {
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expectedDebugTrace = [fork3Trace, fork2Trace, globalTrace];
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throw "gee";
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});
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});
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});
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openTests++;
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f();
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f2();
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done.future.whenComplete(() {
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// We don't really care for the order.
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events.sort();
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Expect.listEquals([
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"handling uncaught error bar",
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"handling uncaught error foo",
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"handling uncaught error gee"
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], events);
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asyncEnd();
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});
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}
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