Question

我遇到了一些小问题。我想用visual studio 2010写一些单元测试论文＃/ wpf / interactivty项目。别忘了我是初学者，很抱歉;）

单元测试应该模拟文本框上的（虚拟）按键事件，结果应该引发一个动作。（动作结果：控制台输出 - 只是作为第一步检查）

我仍然修复了2个问题 - ＆gt;调度员问题＆amp; presentationSource bug。

unittest仍然模拟keyevent并且keyevent到达了文本框，但问题是，为什么动作没有通过文本框上的keydown事件引发？

这是一个线程问题？什么是我的误解？

这是代码

单位测试
在单元测试结束时你可以检查文本框 - 键盘工作

[TestMethod]
public void simpleTest()
{
    var mockWindow = new MockWindow();

    //simple test to check if the virtualKeyboard works
    string CheckText = "Checktext";

    mockWindow.SendToUIThread(mockWindow.textbox, CheckText);

    mockWindow.SendToUIThread(mockWindow.textbox, "k");

    //needed to start the dispatcher
    DispatcherUtil.DoEvents();
}

调度程序修复

public static class DispatcherUtil
    {
        [SecurityPermissionAttribute(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
        public static void DoEvents()
        {
            DispatcherFrame frame = new DispatcherFrame();
            Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.Background, new DispatcherOperationCallback(ExitFrame), frame);
            Dispatcher.PushFrame(frame);
        }

        private static object ExitFrame(object frame)
        {
            ((DispatcherFrame)frame).Continue = false;
            return null;
        }
    }

我的Testaction

 class TestAction : TriggerAction<UIElement>
    {
        protected override void Invoke(object parameter)
        {
            Console.WriteLine("testAction invoke");
        }
    }

MockWindow

public class MockWindow : Window
{
    public TextBox textbox { get; private set; }

    public MockWindow()
    {    
        //add a grid&textbox
        Grid grid = new Grid();
        textbox = new TextBox();

        this.Content = grid;
        grid.Children.Add(textbox);

        //create the testaction/triggerEvent & add them
        TestAction testAction = new TestAction();
        System.Windows.Interactivity.EventTrigger TestTrigger = new System.Windows.Interactivity.EventTrigger();
        TestTrigger.EventName = "KeyDown";
        TestTrigger.Actions.Add(testAction);
        TestTrigger.Attach(this.textbox);
    }

    //enter a keyboard press on an UIElement
    public void SendToUIThread(UIElement element, string text)
    {
        element.Dispatcher.BeginInvoke(new Action(() =>
        {
            SendKeys.Send(element, text);
        }), DispatcherPriority.Input);
    }
}

从codeplex sendkeys添加的MockKeyboard + unittest的presentationCore修复（在SendKeys类中添加）

public class FixPresentationSource : PresentationSource
{
    protected override CompositionTarget GetCompositionTargetCore()
    {
        return null;
    }

    public override Visual RootVisual { get; set; }

    public override bool IsDisposed { get { return false; } }
}

如何通过单元测试中的交互触发器来提升动作？

0 个答案: