如何使用foreach在SwiftUI中创建基于测试数据的多个单元预览

let testData = [
    "Item 1",
    "Item 2",
    "Item 3"
]

import SwiftUI

struct ContentView: View {
    let testData = [
        "Item 1",
        "Item 2",
        "Item 3"
    ]
    
    var body: some View {
        VStack {
            ForEach(testData, id: \.self) { item in
                Text(item)
            }
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        Group {
            ContentView()
            
            ContentView()
                .previewDevice(PreviewDevice(rawValue: "iPhone SE"))
        }
    }
}