Bug 31233 – Assertion Failure in DRT when calling eventSender.mouseUp() after two evenSender.mouseMoveTo() calls

• Status: NEW
• Component: Tools / Tests

[Daniel Bates]

Created attachment 42707 [details]
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.