Crash `Current context must not be nil` with swift-testing

[jcubit]

Describe the bug
I am running into an uncaught exception “Terminating app due to uncaught exception NSInternalInconsistencyException, reason: Current context must not be nil” when snapshot testing a string. The problem only occurs when the test fails. There is no problem at all when recording.

This is not an async test.

To Reproduce

Fresh new project

import Testing
import SnapshotTesting

struct SomeTests {
    @Test
    func this_test_crashes_when_assertion_fails() throws {
        withSnapshotTesting {
            assertSnapshot(of: "foo", as: .lines)
        }
    }
}

Expected behavior
Maybe I am missing something fundamental in the new snapshottesting setup, but this should not crash and I should get a diff in Xcode.

Screenshots
Similar screenshot as in #875

Environment

• swift-snapshot-testing version 1.17.5
• Xcode 16.0 (16A242d)
• Swift 6.0
• OS: macOS 15.0.1 (24A348)

Additional context
This is not an async test, so #822 and #875 solutions do not apply here

Thank you in advance for looking into this!

[mbrandonw]

Hi @jcubit, thanks for the report! There's definitely something to fix here, and not sure how we missed it. There's a chance something changed between the Xcode 16 beta and final release. But either way, #916 will fix it.

[jcubit]

Thank you for your quick answer (and for this Package)! 🙏