Error running tests with flutter : "Failed to load "_test.dart": Shell subprocess ended cleanly. Did main() call exit()?"

Question

Whenever I add new tests to my codebase I encounter the aforementioned error message while running them.

package:flutter_tools/src/test/flutter_tester_device.dart 224:73  FlutterTesterTestDevice.finished
===== asynchronous gap ===========================
dart:async/future.dart                                            Future.any.onValue
Failed to load "app/test/club/club_section_test.dart": Shell subprocess ended cleanly. Did main() call exit()?

croxx5f · Accepted Answer · 2021-11-10 04:20:06Z

16

TLDR

flutter clean && flutter packages get

Workaround

Well it seems that for some reason flutter is caching some data that becomes stale, you can easily get the test back by running:

flutter clean

Which "Delete the build/ and .dart_tool/ directories" and then:

flutter packages get

To rebuild those directories and download dependencies.

edited Nov 10, 2021 at 4:20

answered Sep 14, 2021 at 6:15

croxx5f

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2 Comments

Action Jack Barker Over a year ago

Yes this temporarily solves the problem but it keeps happening over and over again, wheras it didn't used to happen. Having to flutter clean and refetch packages every time I want to run my tests isn't practical. There must be some underlying problem that is causing this to happen in the first place that isn't being solved.

croxx5f Over a year ago

Agree @ActionJackBarker , this was just a workaround I found and wanted to share. Don't know if this is already being looked into in the flutter repo.

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