Update #Preview macro generated test to use snapshotDevices.

[markst]

Short description 📝

When using #Preview macro to generate snapshot tests in combination with test configuration with multiple snapshot_devices:

test_configuration:
  - target: ShowPage
  - simulator_device: "iPhone15,4"
  - required_os: 17
  - snapshot_devices:
      - iPhone 15
      - iPad
  - imports:
      - UIKit
      - Foundation

The appropriate snapshot function is not called.

Resolution

Updates the PreviewLoader extension to ensure compatibility with a template-generated function that loops through different devices for snapshot testing.

[markst]

Function defines as:

private func assertSnapshots(matching preview: _Preview, testName: String = #function) {

https://github.com/BarredEwe/Prefire/blob/main/Templates/PreviewTests.stencil#L60

[BarredEwe]

Hi, thanks for the fix and finding the problem)

To try this fix call the make binary command in the root of Prefire. And for the release of this version you need to call make update version=2.9.0 as well.

[markst]

had to install 5.8.0 swift tools version:

swiftenv local 5.8.0

[markst]

Think it's more complicated than this change.

Seems we may need to update the assertSnapshots to take a SwiftUI.View rather than _PreviewL

Cannot convert value of type '() -> some View' to expected argument type '_Preview'

[markst]

Maybe we need to create a model in order to pass the the assertSnapshots rather than _Preview.
Then we can transpose the PreviewProvider _Preview and the pass the extracted #Preview macro data.