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List:       cmake
Subject:    Re: [CMake] pipe add_test() output into a file
From:       Nico_Schlömer <nico.schloemer () gmail ! com>
Date:       2014-08-26 13:17:28
Message-ID: CAK6Z60daV47EtwUFpqODDCrByR92sxcGvZ8ck6eD+bj6g9_eKg () mail ! gmail ! com
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Thanks Nils! That does the trick.

--Nico

On Tue, Aug 26, 2014 at 12:03 PM, Nils Gladitz <nilsgladitz@gmail.com> wrote:
> On 08/26/2014 11:50 AM, Nico Schlömer wrote:
> > 
> > I would like to add a test for a file converter. The output of the
> > converter is written out to stdout, and I would like to direct this
> > into a file to compare it against a reference file. The signature of
> > add_test() [1] however doesn't seem to allow that.
> > 
> > How would you go about this problem?
> 
> 
> You could run cmake in script mode (${CMAKE_COMMAND} -P) and have the script
> call your converter with execute_process().
> 
> You can pass the path to the converter with the $<TARGET_FILE:tgt> generator
> expression and -D (-D options have to be listed before -P).
> 
> Note that generator expressions in tests are only supported when the test is
> defined with the NAME/COMMAND signature of add_test().
> 
> execute_process() can capture the output of the command in a file or
> variable.
> 
> The script could then also perform the comparison.
> 
> You can make the script (and the test) fail with e.g. message(FATAL_ERROR
> "message")
> 
> Nils
-- 

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