如何在XCTest中提取菜单选择器的选项？

Question

我的应用程序使用 SwiftUI Picker，我想测试它是否只包含预期的选择。当我尝试提取 XCTest 中的选项时，我得到一个额外的条目，

Choose an option, Option 1

，即

["Option 1", "Option 2", "Option 3", "Option 4", "Choose an option, Option 1"]

如何仅获得实际/提供的选择？

以下是应用程序代码

struct PickerXCTest: View {
        let options = ["Option 1", "Option 2", "Option 3", "Option 4"]
        @State private var selectedOption = "Option 1"
        
        var body: some View {
            VStack {
                let picker = Picker("Choose an option", selection: $selectedOption) {
                    ForEach(options, id: \.self) {
                        Text($0)
                    }
                }
                
                picker.pickerStyle(.menu)
                    .accessibility(identifier: "myPicker")
            }
        }
    } // PickerXCTest()

下面是XCTest代码

 func testMenuPicker() throws {
        let app = XCUIApplication()
        app.launchArguments = ["--appmode", "debug", "--usecase", "stackOverflow", "--subcase", "menuPicker"]
        app.launch()
        
        let picker = app/*@START_MENU_TOKEN@*/.buttons["myPicker"]/*[[".buttons[\"Choose an option, Option 1\"]",".buttons[\"myPicker\"]"],[[[-1,1],[-1,0]]],[0]]@END_MENU_TOKEN@*/
        XCTAssertTrue(picker.waitForExistence(timeout: 5), "Picker did not appear in time")
        
        // Tap the picker to bring up the menu.
        picker.tap()
        
        // Access picker items
        let pickerItems = app.buttons.allElementsBoundByIndex
        
        // Extract memu choices.
        var menuChoices: [String] = []
        for item in pickerItems {
            menuChoices.append(item.label)
        }
        
        //XCTAssertTrue(false, "\(menuChoices)")
    } // testMenuPicker()```

我尝试使用与

app.*

相关的不同属性，但我无法想出一种方法来仅返回实际选择。

Answer 1

要返回选择数组，我必须像这样更改您的测试：

• 选择器角色是

  popUpButtons

  ，而不是

  buttons

  。

• 访问您一直在测试其存在性的

  picker

  ，而不是新的东西。

• 选择在

  XCUIElement.title

  ，而不是

  .label

    func testMenuPicker() throws {
        let app = XCUIApplication()
        app.launchArguments = ["--appmode", "debug", "--usecase", "stackOverflow", "--subcase", "menuPicker"]
        app.launch()
        
        let picker = app.popUpButtons["myPicker"]
        XCTAssertTrue(picker.waitForExistence(timeout: 5), "Picker did not appear in time")
        
        // Tap the picker to bring up the menu.
        picker.tap()
        
        // Access picker items
        let pickerItems = picker.menuItems.allElementsBoundByIndex
        
        // Extract menu choices.
        var menuChoices: [String] = []
        for item in pickerItems {
            menuChoices.append(item.title)
        }
        
        XCTAssertEqual(["Option 1", "Option 2", "Option 3", "Option 4"], menuChoices)
    }