I can't figure out how to add my .gpx file to my UITests

[rgrinnin]

I've been trying to get this right. All day but now I'm out of my wits. Maybe someone spots the problem with one look. I also set the scheme path prefix as suggested in our main project.yml as suggested as we use a workspace.
Project generates and builds fine. I also can add any other predefined location through the .yml. Location can also be selected in manage scheme in xcode.

schemePathPrefix: "../"

Here's my UITest file content. Project generates and builds fine. I also can add any other predifined location. Location can also be selected in manage scheme in xcode. Any hint would be much appreciated 🙏

schemes:
  UITests:
    build:
      targets:
        myUITestTarget: [run]
        myApp: [all]

    run:
      config: Debug
      simulateLocation:
        allow: true
        defaultLocation: London, England

    test:
      config: Debug
      gatherCoverageData: true
      targets:
        - name: myUITestTarget
          parallelizable: false
          randomExecutionOrder: false
          location: ./Tests/Testability/UITestLocation-Muellrose.gpx
      preActions:
        - script: "zsh $PROJECT_DIR/Scripts/UITestAutomation/simulator-test-preAction.sh"
          name: Set geo location
          settingsTarget: myApp
          basedOnDependencyAnalysis: false    
      prebuildScripts:
        - script: 'xcrun simctl erase all'
          name: "Run Script: Pre-Build"
          shell: /bin/zsh
      basedOnDependencyAnalysis: false
      coverageTargets: [MyAppsCore,
                        MyAppsUI,
                        MyAppsShared,
                        MyAppsProfile]

targets:
  myUITestTarget:
    type: bundle.ui-testing
    platform: iOS
    settings:
      SWIFT_ACTIVE_COMPILATION_CONDITIONS: $(inherited) TEST
    configFiles:
      Debug: Configuration/ApplicationTests.xcconfig
      Release: Configuration/ApplicationTests.xcconfig
      skippedTests: [UserLifeCycleUITests/test_createUser_VerifyGPS_DeleteUser_Success()]
    fileGroups:
      - UITestLocation-Muellrose.gpx

    dependencies:
      - target: nebenan
      - target: MyAppsApplication
        embed: true
      - target: MyAppsProfile
        embed: true

[yonaskolb]

At first glance fileGroups would need to be replaced with sources in your test target

[rgrinnin]

Thanks so much for the swift reply and it makes a lot of sense from the snippet I added above. Seems I didn't do a good job there, sorry. 😆
Here is what I use for sources. Which should be fine because the .gpx sits in our Testability folder and all the other sources build and work as expected.

    sources:
      - Tests/MyUITesting
      - path: Tests/Testability
        excludes:
          - "Resources/*"
      - path: Sources/MyAssets
        excludes:
          - "Resources/*"
          - "Sources/*"

I have to admit I don't quite understand the fileGroups key yet. I just tried to follow these docs.