[Bug]: The unit test offlineFirstTopicsRepository_toggle_followed_topics_logic_delegates_to_nia_preferences() failed about nowinandroid

[SimonMarquis]

It seems to be a known issue on Windows:

• https://issuetracker.google.com/issues/194301881
• https://issuetracker.google.com/issues/194208090
• https://issuetracker.google.com/issues/203087070
• android/codelab-android-datastore#48

[SimonMarquis]

androidx.datastore:datastore-*:1.1.0-beta02 landed:

Fixed the issue where file rename fails during updateData in non-Android JVM environments. (b/203087070)
https://developer.android.com/jetpack/androidx/releases/datastore#1.1.0-beta02

Unfortunately, the issue persists...

[Rocksnake]

I think the reason should be that two DataStore's writing at the same time, one of the renames seems to be failing, because the file no longer exists.

I think the place where the problem occurs should be in the TestDataStoreModule.kt file, We should instead create the DataStore once, then inject the instance where necessary or manage it as a singleton.

[alexvanyo]

Hi, is this still an issue with the latest version?

[SimonMarquis]

FWIW, on a Windows machine, I'm unable to run the whole test suite. Many unit tests fail while SingleProcessDataStore tries to write the new data as shown above.

[JackEblan]

Hello @SimonMarquis I am also experiencing this java.io.IOException: Unable to rename C:\Users\User\AppData\Local\Temp\junit481202955115791832\user_preferences_test.pb.tmp.This likely means that there are multiple instances of DataStore for this file. Ensure that you are only creating a single instance of datastore for this file. Is there a way to make this work on my Windows 10?

[SimonMarquis]

No, but you can ⭐ & +1 this issue: https://issuetracker.google.com/issues/203087070