Question

我在Windows 7 64位上使用WatiN 2.1.0（C＃）和IE 9。

我的问题是调用此函数

ie.FileUpload(Find.ByName(someRegExp)).Set(fileName);

非常慢我的意思是对象很好找到。此代码打开文件对话框，但它会在很长一段时间后开始输入文件名，大约3到5分钟，比WatiNs超时时间长得多。在此测试的其余部分正常工作之后。

这有什么办法吗？这个大延迟非常烦人，当有更多的文件上传测试用例时，它会显着延长测试持续时间。

Answer 1

好的，这不是每个人说的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耗费了大量的总测试时间，我通过将Watin用于文件上载来解决它，而是使用（可怕的）UIAutomation框架。

使用示例：

    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referefences。以下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求。

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;
    }

}

Answer 2

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）我在文件输入上使用.ClickNoWait（），这不会导致浏览器挂起。

然后我写了一个扩展方法来设置我想要选择的文件：

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();
}

示例用法：

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

UIAutomation将从调用UploadFile（文件路径）接管并找到对话窗口，并填写表单，就像用户那样。

Answer 3

在WatiN开始在文件上传对话框中输入文件名之前，我也遇到了3到5分钟的延迟。

只要在IE中打开开发人员工具窗格，这似乎就发生在我身上。当它没有打开时，立即开始输入。

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。

非常慢的WatiN.Core.Document.FileUpload Set

3 个答案: