Question

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;
}

Answer 1

Fixed this myself by dumping mstest and using mbunit instead. I also found that I didn’t need to use any of the IEStaticInstanceHelper stuff either, it just worked.