C# 非常慢的WatiN.Core.Document.FileUpload集

我正在Windows 7 64位上使用WatiN 2.1.0 C和IE 9

我的问题是调用这个函数

速度非常慢。 我的意思是这个东西很好地找到了。这段代码会打开“文件”对话框，但它会在很长时间后开始键入文件名，大约3到5分钟，比WatiNs超时时间长得多。在此之后，测试的其余部分将正常工作

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有什么治疗方法吗？这种大延迟非常烦人，当有更多的文件上传测试用例时，它会显著延长测试持续时间。

好的，这不是Watin解决方案，但我们遇到了完全相同的问题；我们的文件浏览器测试占用了大量的测试时间，我解决了这一问题，将Watin踢出进行文件上传，转而使用可怕的UIAutomation框架

用法示例：

    public CustomFileUpload FileUpload
    {
        get
        {
            return new CustomFileUpload(WebBrowser.Current.hWnd, "_Layout");
            //return Document.FileUpload(Find.ByName("file"));
        }
    }

您必须在测试项目中向UIAutomationClient和UIAutomationTypes添加引用。下面的解决方案不是通用的，因此您可能需要调整它以满足您的需要

public class CustomFileUpload
{
    private readonly IntPtr _browserHandle;
    private readonly string _tabHeader;

    public CustomFileUpload(IntPtr browserHandle, string tabHeader)
    {
        _browserHandle = browserHandle;
        _tabHeader = tabHeader;
    }

    public void Set(string filePath)
    {
        Automate(filePath);
    }

    private void Automate(string filePath)
    {
        AutomationElement browser = AutomationElement.FromHandle(_browserHandle);

        AutomationElement tab = FindTab(browser, _tabHeader);


        // IE10 adds the name (or value?) "Browse..." to the upload-button. Need to hack it :)
        AutomationElement uploadButton = tab.FindFirst(TreeScope.Children,
                                                            new AndCondition(
                                                                new PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Button),
                                                                new PropertyCondition(AutomationElement.NameProperty, "Browse..."))) ??
                                                                tab.FindFirst(TreeScope.Children,
                                                        new AndCondition(
                                                            new PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Button),
                                                            new PropertyCondition(AutomationElement.NameProperty, "")));

        ClickButton(uploadButton);

        var openFileDialog = WaitUntilOpenFileDialogAvailable();

        var valuePattern = FindFileNameTextBox(openFileDialog).GetCurrentPattern(ValuePattern.Pattern) as ValuePattern;

        if (valuePattern == null)
            throw new InvalidOperationException("Can't set the file path");

        valuePattern.SetValue(filePath);

        SetFocusToSomethingElse(browser);

        var okButton = WaitUntilOkButtonLoaded(openFileDialog);

        ClickButton(okButton);
    }

    private static AutomationElement FindTab(AutomationElement browser, string tabHeader)
    {
        return browser.FindFirst(TreeScope.Descendants,
                                 new AndCondition(
                                     new PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Pane),
                                     new PropertyCondition(AutomationElement.NameProperty, tabHeader)));
    }

    private static void SetFocusToSomethingElse(AutomationElement elementWhichShouldNotBeSelected)
    {
        do
        {
            foreach (AutomationElement element in AutomationElement.RootElement.FindAll(TreeScope.Children, new PropertyCondition(AutomationElement.IsKeyboardFocusableProperty, true)))
            {
                if (element != elementWhichShouldNotBeSelected)
                {
                    element.SetFocus();
                    return;
                }
            }

        } while (true);
    }

    private static AutomationElement WaitUntilOkButtonLoaded(AutomationElement openFileDialog)
    {
        AutomationElement okButton;

        do
        {
            okButton = openFileDialog.FindFirst(TreeScope.Children,
                                                new AndCondition(
                                                    new PropertyCondition(AutomationElement.IsContentElementProperty, true),
                                                    new PropertyCondition(AutomationElement.IsControlElementProperty, true),
                                                    new PropertyCondition(AutomationElement.NameProperty, "Open"),
                                                    new PropertyCondition(AutomationElement.IsInvokePatternAvailableProperty, true)
                                                    ));

        } while (okButton == null);

        return okButton;
    }

    private static AutomationElement WaitUntilOpenFileDialogAvailable()
    {
        AutomationElement openFileDialog = null;

        do
        {

            AutomationElement openFileDialogContainer = AutomationElement.RootElement.FindFirst(TreeScope.Children, new PropertyCondition(AutomationElement.ClassNameProperty, "Alternate Modal Top Most"));

            if (openFileDialogContainer != null)
                openFileDialog = openFileDialogContainer.FindFirst(TreeScope.Children, Condition.TrueCondition);
        } while (openFileDialog == null);

        return openFileDialog;
    }

    private static void ClickButton(AutomationElement button)
    {            
        var clickPattern = button.GetCurrentPattern(InvokePattern.Pattern) as InvokePattern;

        if (clickPattern == null)
            throw new InvalidOperationException("Can't find the buttons click pattern");

        clickPattern.Invoke();
    }

    private static AutomationElement FindFileNameTextBox(AutomationElement openFileDialog)
    {
        AutomationElement findElementToTypePathInto;

        do
        {
            findElementToTypePathInto = openFileDialog.FindFirst(TreeScope.Descendants, new AndCondition(new PropertyCondition(AutomationElement.NameProperty, "File name:"), new PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Edit)));
        } while (findElementToTypePathInto == null);

        return findElementToTypePathInto;
    }

}

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在WatiN开始在文件上传对话框中输入文件名之前，我也经历了3到5分钟的延迟

每当IE中打开“开发人员工具”窗格时，我就会遇到这种情况。如果没有打开，则会立即开始键入

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关于默认浏览器和类似弹出窗口的提示似乎也会导致延迟。

我有一个稍微简单的解决方案，再次依靠自动化，但仅用于选择文件 我使用了。单击文件输入上的Nowait，这不会导致浏览器挂起

然后，我编写了一个扩展方法来设置要选择的文件：

public static void UploadFile(this Browser browser, string uploadPath)
{
    var trw = new TreeWalker(Condition.TrueCondition);
    var mainWindowElement = trw.GetParent(AutomationElement.FromHandle(browser.hWnd));

    // Wait for the dialog to open
    Thread.Sleep(1000);

    // Get the select dialog
    var selectDialogElement = mainWindowElement.FindFirst(TreeScope.Descendants, 
        new PropertyCondition(AutomationElement.NameProperty, "Choose File to Upload"));

    // Get the file name box and set the path
    var selectTextElement = selectDialogElement.FindFirst(
        TreeScope.Descendants,
        new AndCondition(new PropertyCondition(AutomationElement.NameProperty, "File name:"),
            new PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Edit)));
    var selectValue = (ValuePattern)selectTextElement.GetCurrentPattern(ValuePattern.Pattern);
    selectValue.SetValue(uploadPath);

    // Get the open button and click it
    var openButtonElement = selectDialogElement.FindFirst(TreeScope.Descendants,
        new AndCondition(new PropertyCondition(AutomationElement.NameProperty, "Open"),
            new PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Button)));
    var openButtonClick = (InvokePattern)openButtonElement.GetCurrentPattern(InvokePattern.Pattern);
    openButtonClick.Invoke();
}

用法示例：

var browser = (IE)Document.DomContainer;     
Document.FileUpload(Find.BySelector("#FileUpload")).ClickNoWait();
browser.UploadFile("c:\\myfile.txt");
Document.Button(Find.BySelector("#submit")).Click();

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UIAutomation将从call UploadFilePath接管，并将找到对话框窗口，然后像用户那样填写表单。

我也有同样的问题。到目前为止，我还没有找到解决方案，也许你会更幸运。看起来很有希望，但我被转移到了其他项目，现在无法验证此解决方案，所以我会接受你的命运，因为你也有同样的问题。

var browser = (IE)Document.DomContainer;     
Document.FileUpload(Find.BySelector("#FileUpload")).ClickNoWait();
browser.UploadFile("c:\\myfile.txt");
Document.Button(Find.BySelector("#submit")).Click();