Compile error in 1.17.4 with Xcode 16.1.0 Beta: Missing required module 'Testing'

[JRR-OSU]

Hi all,

We love your library, but currently it doesn't seem to be usable with Xcode 16.1. When importing the library, an error is observed that prevents compilation of the test target. I included a minimal sample project down below. This is pretty urgent since we are a week away from a new Xcode RC.

Describe the bug
When importing SnapshotTesting in a project, the following error occurs:

Missing required module 'Testing'

To Reproduce
swift-snapshot-testing.zip

import SnapshotTesting

final class SnapshotTestSampleUITests: XCTestCase {

Expected behavior
The project should compile without errors when importing SnapshotTesting, and the SnapshotTesting library should function as expected without the Testing module error.

Screenshots

Environment

• swift-snapshot-testing version 1.17.4
• Xcode 16.1.0 Beta
• Swift 5
• OS: macOS 14.5 / iOS 18.1 Simulator

@stephencelis Am happy to help fork and fix this if I can get some more information on the Testing framework and the wizardry happening with the imports here. Thanks!

[JRR-OSU]

FWIW, I cannot get the sample to compile with Xcode 16.0 Beta 5 or Beta 6 either. Both of those are running in Swift 5 mode.

[mbrandonw]

Hi @JRR-OSU, the project you have provided compiles just fine in Xcode 16.1 beta for me, and I also created a fresh project, added SnapshotTesting, and that too compiles just fine.

Can you please provide a project that demonstrates the problem? And since it is not clear this is an issue with the library, I am going to convert this to a discussion. Please feel free to continue the conversation over there.