How to test iPhone app and CarPlay together?

I have developed a mobile app using SwiftUI. Now I am in the process of building a CarPlay application. I know how to test the CarPlay app using a simulator but here is my confusion,

1. How to test the iPhone app and CarPlay together? I want to test few scenarios like, user login / logout from mobile app. Location enabled /disabled in the mobile app.

I know that swiftUI handles the scenes by itself. Kindly help me validate the above scenarios as I am getting black screen on iPhone whenever the CarPlay is launched. Below is the code snippet,

func application(_ application: UIApplication,
                     configurationForConnecting connectingSceneSession: UISceneSession,
                     options: UIScene.ConnectionOptions) -> UISceneConfiguration {
        if connectingSceneSession.role == .carTemplateApplication {
            let sceneConfiguration = UISceneConfiguration(name: "CarPlay Scene", sessionRole: connectingSceneSession.role)
            sceneConfiguration.delegateClass = CarPlaySceneDelegate.self
            return sceneConfiguration
        }
        
        // Configuration for other types of scenes
        return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
    }

struct MyApp: App {
    @UIApplicationDelegateAdaptor(AppDelegate.self) var delegate
    
    var body: some Scene {
        WindowGroup {
            ContentView()
                .preferredColorScheme(.light)
        }
    }
    
}

Info.plist

<key>UIApplicationSceneManifest</key>
        <dict>
            <key>UIApplicationSupportsMultipleScenes</key>
            <true/>
            <key>UISceneConfigurations</key>
            <dict>
                <key>CPTemplateApplicationSceneSessionRoleApplication</key>
                <array>
                    <dict>
                        <key>UISceneConfigurationName</key>
                        <string>CarPlay Scene</string>
                        <key>UISceneDelegateClassName</key>
                        <string>$(PRODUCT_MODULE_NAME).CarPlaySceneDelegate</string>
                    </dict>
                </array>
            </dict>
        </dict>