Generated PreviewModels swift file has no access to preview files from Swift local packages

[woutergoossens]

Context 🕵️‍♀️

We have rather big project with some local SPM local packages. In those packages we have SwiftUI screens and components.
I added Prefire to the project and package and updated a SwiftUI preview in the local package to use PrefireProvider.
But then the project generated the PreviewModels file but it has no access to

AppointmentDetailsScreen_Previews is part of Presentation package and that package isn't imported or cannot be accessed.. How can I do that?
Can I update the PreviewModels template file?

[woutergoossens]

It seems PR 21 is a possible solution? Any ETA on this?
#21

[BarredEwe]

I'm currently working on a new major release #29 with a lot of improvements. In particular, the ability to install custom imports has been added:

test_configuration:
  - target: PrefireExample
  - simulator_device: "iPhone15,2"
  - required_os: 17

playbook_configuration:
  - imports:
      - UIKit
      - Foundation

⚠️ The branch is currently under active development, but the main work has already been done and the general interface has already been fixed.

[woutergoossens]

Sounds great!
Can I already test this via SPM with your specific branch?

Our packages also have tests, is that supported? So we run the test in the main project and snapshot tests from the packages are verified?

So in test_configuration target would be just our main target?

When do you think it could be released?
I am working for a big Belgian banking company and we have more then > 100 screens and components in SwiftUi that we like to have snapshots from (and tested) :)

so would be a good usecase to test v2, right?

[BarredEwe]

I think it's really possible to use a branch now.
According to the plans, there is not much left to finish. About 1-2 weeks before the full release.
In general, it sounds great for a test and a quick revision :)

[woutergoossens]

Sounds good. Happy to test :)

I added that branch via SPM but when I run the tests I get this

[BarredEwe]

I can't reproduce it ):
Could you clear spm cache?

[woutergoossens]

Tried cleaning everything.. Same issue..
Will try in the example project later today...

[woutergoossens]

I have the same issue when I run the example app.. Let me try again clearing everything :D

Nope.. doesn't work. Should I do something extra?

[BarredEwe]

I've added a couple of changes, can you check on the new version of the branch?

[woutergoossens]

Thanks. That works :) I added it to my project and a package with SwiftUI screens.
But now I have an issue with the new macro previews.

For example it wants to generate the PreviewTests.generated file like this -->

We create that screen with a private PreviewViewModel (the VM is our ObservableObject with state and events,...)
But the generated file has no access to it.. Also we add an environmentObject to it, which is part of another package. How can I add that import for the tests? How can I fix that without making all those classes public? :)

In the old way of creating previews, it's also created like this and that works without making the VM public.

static var previews: some View {
        SplashScreen(viewModel: PreviewViewModel())
    }

[woutergoossens]

So.. tested now in the Project itself.

So in our project we have SwiftUI files in different packages (for example Presentation, DesignSwiftUI,...)

In the custom config I added extra import Presentation

playbook_configuration:
  - imports:
      - UIKit
      - Foundation
      - Presentation

PreviewModels -->
So that is working. The file is found.

• BUT the SplashScreen_Previews struct should be public, otherwise it doesn't find the file..
• Macro previews are not showed?

PreviewTests -->
Macro Previews:

• I had to remove the private from the PreviewViewModel (see previous comment).
• I get Invalid redeclaration of tests.. Those previews are only declared once.. Already cleaned all..
  It seems it cached the tests and doesn't remove/update them when I update the preview declaration?
  For example I changed/renamed the environmentObject but it keeps track of it

[BarredEwe]

I have added a new configuration:

prefire_configuration:
  - imports:
    - UIKit
    - Foundation
  - testable_imports:
    - SwiftUI

And I fixed a few bugs.

[woutergoossens]

Thanks!

Playbook (PreviewModels.generated) is working now with @testable import Presentation
But doesn't show the Macro previews?

PreviewTests is still failing because of Invalid redeclaration of 'test_SelectCoHolderTestPreview_Preview()'
Already tried to remove the SwiftUI file but it keeps the test..

What can I do to fix that? Already cleaned DerrivedData/SPM cache/...

[BarredEwe]

I hope I fixed it)