[SwiftTesting] Inconsistent and intermittent failures.

[Boowman]

Describe the bug

• I’m running snapshot tests using Apple’s new SwiftTesting framework, but they fail randomly on CI.
• Locally in Xcode, they consistently pass.
• Running them via Terminal locally gives mixed results — sometimes they pass, sometimes they fail.

To Reproduce

• This is part of my production code, so I don’t have a simplified sample to share.
• As mentioned, the issue is intermittent.

Expected behavior

• I would expect it to behave the same way as it does when running tests with XCTestCase.

Screenshots

Environment

• swift-snapshot-testing version 1.18.1
• Xcode 16.4
• Swift 6.1.2
• OS: iOS 18.5

Additional context
Add any more context about the problem here.

[mbrandonw]

Hi @Boowman, sorry there isn't enough info here for us to really help. If you can share a minimal project that reproduces the problem then someone can take a look.

Since it's not clear that this is an issue with the library I am going to convert it to a discussion. Please feel free to continue the conversation over there!

[Boowman]

I believe this is the same issue: #1002
It's kinda hard for me to create a minimal project since the issue only happens when I run my CI, locally only fails intermittently.
As I said when I use XCTestCase it works and it passes SwiftTesting starts to cause problems.