[webkit-dev] Layout tests

Mike Emmel mike.emmel at gmail.com
Tue Jul 4 12:09:26 PDT 2006

On 7/4/06, Eric Seidel <macdome at opendarwin.org> wrote:
> On Jul 4, 2006, at 1:35 PM, Mike Emmel wrote:
> >
> > So  why run the layout tests now ?
> > The current ports problems are evident via simple single page testing.
> Layout tests are always useful.  Even if the port is otherwise non-
> functional, the layout tests will help you better understand your
> changes, when you make them.  Sometimes you'll make a one line change
> and change (fix or break) tens or hundreds of tests at once.

I don't disagree that there not useful if it was a simple matter to
get them to run.
But it looks like a pretty big project which may not complete for some time.
Which brings up a number of questions.
Is this the best test code base for cross platform testing ?

There are other tests suites acid2 I believe that may be more amendable.
In anycase there are a lot of testing frameworks out ther.

Again I'm just questioning the timing and scope of the project.

Not that it would not be useful if it was available.


> On 7/4/06, Ronan Meneu <rmeneu at origyn.fr> wrote:
> > * I have compiled the DumpRenderTree tool in the .vcproj, modified
> > it to
> > build a FrameGdk instead of a FrameWin. Purpose of this tool i
> > think is to
> > just dump render tree. It does not have some functionalities of the
> > objective-c code like "image diff". It works on linux, but layer
> > size is
> > always 0x0. Is this the DumpRenderTree tool used on win32 platform ?
> This is the correct direction to move in.  DumpRenderTree.cpp just
> hasn't received enough lovin yet.
> An ambitious coder might chose to try and port more of
> DumpRenderTree.xcodeproj (all the associated .m files) to c++ to be
> shared.  It's probably just as easy to write new .cpp files however.
> Especially since it will be a long time before any sort of delegation
> model (for editing, loading delegates, etc.) exists for WebKit for
> any platform other than OS X.
> ImageDiff would be simple enough to write using ImageMagick, or any
> other image library which knew how to read pngs into an RGBA array.
> One of the first problems someone needs to solve, is setting up run-
> webkit-tests to dump separate -expected.txt files for windows or find
> some way of comparing windows/linux expected.txt output with mac
> expected.txt output.  This is likely impossible due to different
> fonts on the three systems.
> Happy hacking.
> -eric

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