[CMake] add_test WORKING_DIRECTORY option

[Belcourt, Kenneth]

Hi,

The documentation states that the add_test() WORKING_DIRECTORY option  
will run the test in the given directory.  This add_test rule in my  
CMakeLists.txt file:

add_test(
   NAME bwr_melgen
   WORKING_DIRECTORY ${Bwr_Dir}
   COMMAND melgen.x ${Bwr_Dir}/_BWR_v2-0.inp
)

with ${Bwr_Dir} == /scratch/trunk_tests/_ShorterRuns/Plant_Decks/BWR

results in this command line.

1: Test command: /scratch/trunk/tools/melgen.x /scratch/trunk_tests/ 
_ShorterRuns/Plant_Decks/BWR/_BWR_v2-0.inp
   Test #1: bwr_melgen

Due to problems in the code base, the output is not generated in the  
test directory and this is a known code problem.

Is there an easy way to change the WORKING_DIRECTORY behavior to have  
it always cd to the working directory beforehand, then run the test,  
(pushd / popd behavior) etc..., rather than making, in our case the  
unsafe assumption, that the program correctly writes the files where  
they should be?  Frankly, if ctest would always cd into the test  
directory, then we'd never have a problem though we would never  
uncover the incorrect file handling behavior either.

Anyone know of a way to change the working directory behavior?

-- Noel