将 WatiN 附加到 IE 时出现问题

发布于 2024-10-03 21:48:59 字数 1700 浏览 4 评论 0原文

我正在尝试使用 WatiN 进行 UI 测试，我可以让测试正常工作，但之后无法关闭 IE。

我正在尝试使用 WatiN 的示例 IEStaticInstanceHelper 技术。

问题似乎是附加到 IE 线程，该线程超时：

_instance = IE.AttachTo<IE>(Find.By("hwnd", _ieHwnd));

（_ieHwnd 是 IE 首次启动时存储的 IE 句柄。）

这给出了错误：

类清理方法 Class1.MyClassCleanup 失败。错误信息： WatiN.Core.Exceptions.BrowserNotFoundException：找不到匹配的 IE 窗口约束：属性“hwnd”等于 ‘1576084’。搜索在“30”后过期秒..堆栈跟踪：在 WatiN.Core.Native.InternetExplorer.AttachToIeHelper.Find（约束 findBy、Int32 超时、布尔值等待完成）

我确信我一定错过了一些明显的东西，有人对此有任何想法吗？感谢

完整性，静态助手看起来像这样：

public class StaticBrowser
{
    private IE _instance;
    private int _ieThread;
    private string _ieHwnd;

    public IE Instance
    {
        get
        {
            var currentThreadId = GetCurrentThreadId();
            if (currentThreadId != _ieThread)
            {
                _instance = IE.AttachTo<IE>(Find.By("hwnd", _ieHwnd));
                _ieThread = currentThreadId;
            }
            return _instance;
        }
        set
        {
            _instance = value;
            _ieHwnd = _instance.hWnd.ToString();
            _ieThread = GetCurrentThreadId();
        }
    }

private int GetCurrentThreadId()
{
    return Thread.CurrentThread.GetHashCode();
}
    }

清理代码看起来像这样：

private static StaticBrowser _staticBrowser;

[ClassCleanup]
public static void MyClassCleanup()
{
    _staticBrowser.Instance.Close();
    _staticBrowser = null;
}

原文

I am experimenting with WatiN for our UI testing, I can get tests to work, but I can't get IE to close afterwards.

I'm trying to close IE in my class clean up code, using WatiN's example IEStaticInstanceHelper technique.

The problem seems to be attaching to the IE thread, which times out:

_instance = IE.AttachTo<IE>(Find.By("hwnd", _ieHwnd));

(_ieHwnd is the handle to IE stored when IE is first launched.)

This gives the error:

Class Cleanup method
Class1.MyClassCleanup failed. Error
Message:
WatiN.Core.Exceptions.BrowserNotFoundException:
Could not find an IE window matching
constraint: Attribute 'hwnd' equals
'1576084'. Search expired after '30'
seconds.. Stack Trace: at
WatiN.Core.Native.InternetExplorer.AttachToIeHelper.Find(Constraint
findBy, Int32 timeout, Boolean
waitForComplete)

I'm sure I must be missing something obvious, has anyone got any ideas about this one?
Thanks

For completeness, the static helper looks like this:

public class StaticBrowser
{
    private IE _instance;
    private int _ieThread;
    private string _ieHwnd;

    public IE Instance
    {
        get
        {
            var currentThreadId = GetCurrentThreadId();
            if (currentThreadId != _ieThread)
            {
                _instance = IE.AttachTo<IE>(Find.By("hwnd", _ieHwnd));
                _ieThread = currentThreadId;
            }
            return _instance;
        }
        set
        {
            _instance = value;
            _ieHwnd = _instance.hWnd.ToString();
            _ieThread = GetCurrentThreadId();
        }
    }

private int GetCurrentThreadId()
{
    return Thread.CurrentThread.GetHashCode();
}
    }

And the clean up code looks like this:

private static StaticBrowser _staticBrowser;

[ClassCleanup]
public static void MyClassCleanup()
{
    _staticBrowser.Instance.Close();
    _staticBrowser = null;
}

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分開簡單 2024-10-10 21:49:01

我自己通过转储 mstest 并使用 mbunit 解决了这个问题。我还发现我也不需要使用任何 IEStaticInstanceHelper 东西，它就可以工作。

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|煩躁 2024-10-10 21:49:00

问题是，当 MSTEST 执行带有 [ClassCleanup] 属性的方法时，它将在不属于 STA。

如果您运行以下代码，它应该可以工作：

[ClassCleanup]
public static void MyClassCleanup()
{
    var thread = new Thread(() =>
    {
        _staticBrowser.Instance.Close();
        _staticBrowser = null;
     });

    thread.SetApartmentState(ApartmentState.STA);
    thread.Start();
    thread.Join();
}

WatiN 网站简要提到 WatiN 无法与不在 STA 中的线程一起工作此处，但在 [ClassCleanup] 和 [AssemblyCleanupAttribute 等方法时，[TestMethod] 在 STA 中运行并不明显] 不。

The problem is that when MSTEST executes the method with the [ClassCleanup] attribute, it will be run on a thread that isn't part of the STA.

If you run the following code it should work:

[ClassCleanup]
public static void MyClassCleanup()
{
    var thread = new Thread(() =>
    {
        _staticBrowser.Instance.Close();
        _staticBrowser = null;
     });

    thread.SetApartmentState(ApartmentState.STA);
    thread.Start();
    thread.Join();
}

The WatiN website briefly mentions that WatiN won't work with threads not in the STA here but it isn't obvious that [TestMethod]'s run in the STA while methods like [ClassCleanup] and [AssemblyCleanupAttribute] do not.

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