[Webkit-unassigned] [Bug 31233] New: Assertion Failure in DRT when calling eventSender.mouseUp() after two evenSender.mouseMoveTo() calls

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=31233

           Summary: Assertion Failure in DRT when calling
                    eventSender.mouseUp() after two
                    evenSender.mouseMoveTo() calls
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: dbates at webkit.org
                CC: eric at webkit.org, sam at webkit.org, oliver at apple.com,
                    aroben at apple.com


Created an attachment (id=42707)
 --> (https://bugs.webkit.org/attachment.cgi?id=42707)
Layout test to trigger assertion failure

When you have at least two eventSender.mouseMoveTo() calls subsequently
followed by a eventSender.mouseUp() within the same Frame, the assertion on
line 99 of UIDelegate.mm fails
<http://trac.webkit.org/browser/trunk/WebKitTools/DumpRenderTree/mac/UIDelegate.mm?rev=49411#L99>.

For completeness, the standard error message seen is:

Assertion failed: (!draggingInfo), function -[UIDelegate
webView:dragImage:at:offset:event:pasteboard:source:slideBack:forView:], file
/Users/dbates/Documents/WebKit/WebKitTools/DumpRenderTree/mac/UIDelegate.mm,
line 99.

There seems to be no issue when dragging a source between frames since the
assertion does not fail when you run
LayoutTests/fast/events/drag-in-frames.html.

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