in checked mode, if "flutter test" experiences a post-test engine crash, it triggers a failure in the test package #7653
Description
'package:test/src/runner/live_suite_controller.dart': Failed assertion: line 116: '_active == null': is not true.
dart:core _AssertionError._throwNew
package:test/src/runner/live_suite_controller.dart 116 LiveSuiteController.reportLiveTest
package:test/src/runner/engine.dart 348 Engine._runLiveTest.<async>
This is an unexpected error. Please file an issue at http://github.com/dart-lang/test
with the stack trace and instructions for reproducing the error.
'package:test/src/runner/live_suite_controller.dart': Failed assertion: line 116: '_active == null': is not true.
dart:core _AssertionError._throwNew
package:test/src/runner/live_suite_controller.dart 116 LiveSuiteController.reportLiveTest
package:test/src/runner/engine.dart 348 Engine._runLiveTest.<async>
===== asynchronous gap ===========================
dart:async _Completer.completeError
package:test/src/runner/engine.dart 368 Engine._runLiveTest.<async>
===== asynchronous gap ===========================
dart:async Future.Future.microtask
package:test/src/runner/engine.dart Engine._runLiveTest
package:test/src/runner/engine.dart 305 Engine._runGroup.<async>
===== asynchronous gap ===========================
dart:async Future.Future.microtask
package:test/src/runner/engine.dart Engine._runGroup
package:test/src/runner/engine.dart 300 Engine._runGroup.<async>
dart:async _SyncCompleter.complete
package:test/src/runner/engine.dart 323 Engine._runGroup.<async>
dart:async _SyncCompleter.complete
package:test/src/runner/engine.dart 358 Engine._runLiveTest.<async>
===== asynchronous gap ===========================
dart:async _asyncThenWrapperHelper
package:test/src/runner/engine.dart Engine._runGroup
package:test/src/runner/engine.dart 263 Engine.run.<fn>.<fn>.<async>.<fn>.<async>
===== asynchronous gap ===========================
dart:async Future.Future.sync
package:pool/pool.dart 120 Pool.withResource.<fn>
===== asynchronous gap ===========================
dart:async _Future.then
package:pool/pool.dart 119 Pool.withResource
package:test/src/runner/engine.dart 261 Engine.run.<fn>.<fn>.<async>
dart:async _SyncCompleter.complete
package:test/src/runner/engine.dart 456 Engine._addLoadSuite.<async>
dart:async _SyncCompleter.complete
package:test/src/runner/load_suite.dart 45 LoadSuite.suite.suite_async_body>
dart:async _SyncCompleter.complete
package:test/src/runner/load_suite.dart 83 LoadSuite.LoadSuite.<fn>.<fn>.<async>
dart:async _SyncCompleter.complete
package:test/src/runner/loader.dart 158 Loader.loadFile.<loadFile_async_gen_body>.<fn>.<async>
dart:async _SyncCompleter.complete
package:test/src/runner/plugin/platform.dart 65 PlatformPlugin.load.<async>
dart:async _SyncCompleter.complete
package:test/src/runner/plugin/platform_helpers.dart 94 deserializeSuite.<async>
===== asynchronous gap ===========================
dart:async _asyncThenWrapperHelper
package:test/src/runner/engine.dart Engine.run.<fn>.<fn>
dart:async Future.Future.sync
package:test/src/runner/engine.dart 245 Engine.run.<fn>
===== asynchronous gap ===========================
dart:async _StreamImpl.listen
package:test/src/runner/engine.dart 241 Engine.run
package:test/src/runner.dart 125 Runner.run.<async>
===== asynchronous gap ===========================
dart:async Future.Future.microtask
package:test/src/runner.dart Runner.run
package:test/src/executable.dart 174 main.<async>
===== asynchronous gap ===========================
dart:async Future.Future.microtask
package:test/src/executable.dart main
cc @nex3