Xcode 14 (on Ventura): "Failed to prevent system sleep during UI testing" when UNIT testing

user_1311272 0
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I'm running Xcode 14 beta 5 on macOS Ventura (13.0 Beta (22A5321d)) and when trying to run unit tests, not UI tests, plain old unit tests, I get this super annoying dialog when starting a test.

This is an SPM package, not an .xcodeproj.

enter image description here

If I click details, this is shown:

Details

Failed to prevent system sleep during UI testing. Error code: -536870211
Domain: IDEFoundationErrorDomain
Code: 1
User Info: {
    DVTErrorCreationDateKey = "2022-08-17 20:06:42 +0000";
}
--


System Information

macOS Version 13.0 (Build 22A5321d)
Xcode 14.0 (21330) (Build 14A5294e)
Timestamp: 2022-08-17T22:06:42+02:00

Sometimes deleting derived data helps, sometimes not.

Any clues? I did not see this error in Xcode 14 beta 1 I think.

xcode14
1 Answers

In terminal run: sudo pmset schedule cancelall

This fixed the issue for me on macOS Ventura Beta 5, Xcode 14 beta 6.

The answer came from this comment. It looks like a bug causes process powerd to issue too many assertions to pmset. This causes a problem when another process tries to create a PreventUserIdleSystemSleep assertion.

user_42322070
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