unit-testing - nunit UITest xamarin.forms : how to scroll a picker?

Question

我正在尝试为 Xamarin.Forms 项目创建 UITest。在 Android 上进行测试。我尝试使用 Xamarin forum 上可用的一些信息但没有运气。

选择器的国家/地区列表:

List<country> countryList = new List<country>({id="GB", name="United Kingdom"}, {id="US", name="United States"}.... etc);

选择器代码:

        var countryPicker  = new Picker();
        countryPicker.SetBinding(Picker.SelectedIndexProperty, "myIndex");
        countryPicker.BindingContext = getCountry;
        countryPicker.BackgroundColor = Color.White;
        countryPicker.AutomationId = "countryPicker";
        countryPicker.SelectedIndexChanged += ((s, e) =>
            {
                    foreach (var element in countryList)
                    {
                        if (element.name.Equals(countryPicker.Items[countryPicker.SelectedIndex]))
                        {
                            getCountry.myCountry = element.id;
                        }
                    }
            });

        //adding all the countries to the list
        foreach (var item in countryList)
        {
            countryPicker.Items.Add(item.name);

        }

单位代码:

app.Query(c=>c.Marked("countryPicker").Invoke("selectValue", "United States"));

答案:对 Marked("countryPicker").Invoke("selectValue", "United States") 的查询给出了 1 个结果。但是什么也没有发生——选择没有完成!我尝试选择“US”的值 - 相同，没有结果。

我错过了什么吗？

Answer 1

打开 Xamarin.Form 选择器、选择和测试结果(仅限 Android):

// Open up the picker
app.Tap(x => x.Marked("countryPicker"));

// Try to scroll and find the text item only 5 times
for (int i = 0; i< 5; i++)
{
    if (app.Query(m => m.Text("United States")).Length == 0)
        app.ScrollDown(x => x.Id("select_dialog_listview"));
else
    {
        app.Tap(x => x.Text("United States"));
        break;
    }
}
Assert.IsTrue(app.Query("countryPicker")[0].Text == "United States");

打开 Xamarin.Form 选择器、选择和测试结果(仅限 iOS):

/// Open up the picker
app.Tap(x => x.Marked("countryPicker"));

// Assuming a single column picker
var picker = app.Query(x => x.Class(pickerClass).Index(0));
// Try to scroll and find the text item only 5 times
for (int i = 0; i < 5; i++)
{
    if (app.Query(m => m.Text("United States")).Length == 0)
        app.ScrollDown(x => x.Class("UIPickerTableView").Index(0));
    else
    {
        app.Tap(x => x.Text("United States"));
        break;
    }
}
app.Tap(x => x.Class("UIToolbarTextButton"));
Assert.IsTrue(app.Query("countryPicker")[0].Text == "United States");