[vtk-developers] Failing test rendering problem

[Mathieu Westphal]

After further investigation, Joachim and me consider that the
vtkTesting::FrontBuffer and associated argument "-FrontBuffer" to be
basically useless, as one do not care if a test succeed using an image from
the Front or the Back buffer, as long as a corresponding image can be found
in any image buffer.

Is anyone using this "-FrontBuffer" option ? If not we will deprecate it
for further removal.

it will allow to *always* check front and back buffer in vtkTesting, which
is already the case when using static method vtkTesting::test.
We propose this because there is a wrapping of vtkTesting which is
massivelly used in Python test : vtkTclTest2Py/rtImageTest.py and may fail
for the same reason explained before in this thread.

And we think that removing the FrontBuffer option from vtkTesting is the
right way to go here.
It will not change the already proposed and working patch for Testing.py
which do not use vtkTesting.


Mathieu Westphal

On Thu, Jul 2, 2015 at 5:28 PM, David Thompson <david.thompson at kitware.com>
wrote:

> > You may notice from git blame, those comments were added only
> > recently, in October 2014 in commit e136e01e...
> >
> > I didn't even know when I did that commit that there was a python
> > equivalent to vtkTesting.cxx. I wonder why vtkTesting.cxx isn't simply
> > wrapped and used directly from python...?
>
> Python's unittest.TestCase framework is handy, familiar to Python users,
> and breaks things into chunks that make running from an interpreter easier
> than the traditional tests (since you can import a test module, create the
> test instance, run setup, and manually run a test then tweak things from
> the interpreter after the test has run).
>
> I do not oppose wrapping vtkTesting, but do oppose banishing the
> vtk.test.vtkTest class.
>
>         David
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