[CMake] Running two executables sequentially in a test

[David Cole]

If it's supposed to be "one test" from ctest's point of view, you should
write a script that makes 2 execute_process calls, and run the script as the
add_test command.


On Mon, May 2, 2011 at 1:25 PM, Tyler <tyler at cryptio.net> wrote:

> I believe tests can have dependencies. Failing that, you can use the
> COST property to control test execution order.
>
> hth,
> tyler
>
> On Mon, May 2, 2011 at 10:18 AM, David Doria <daviddoria at gmail.com> wrote:
> > I am trying to run an executable that produces an output image, then
> > compare this image to a baseline using a separate Compare executable.
> >
> > Is it possible to do this in a single add_test command? I tried
> > separating the two executables with a semicolon, but that doesn't seem
> > to work.
> >
> > add_executable(Compare Compare.cpp) #build the Compare executable
> > add_executable(simple simple.cpp) #build the simple/test executable
> > add_test(NAME SimpleTest COMMAND simple output.png;Compare output.png
> > baselines/baseline.png) # run the 'simple' executable to produce the
> > output, then use 'Compare' to compare it to a baseline
> >
> > I think doing it in two separate tests would be ok:
> >
> > add_test(NAME SimpleTest COMMAND simple)# run the 'simple' executable
> > to produce the output
> > add_test(NAME CompareSimple COMMAND Compare output.png
> > baselines/baseline.png) # use 'Compare' to compare it to a baseline
> >
> > but I'm afraid that they may run in different orders (if multiple
> > threads are used to run the tests, etc).
> >
> > What would be the "best practice" way to do this?
> >
> > Thanks,
> >
> > David
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