cmake ctest post test delete file - cmake

Question

I have a cmake project that runs through a number of tests, i.e.
add_test(test_title executable arg1 arg2)
On runing these tests a number of files are produced.
Once the test has run I would like to delete one of these files produced, i.e.
delete(${arg1}.txt)
or
delete(${arg2}.pdf)
If you could provide an example it would be very much appreciated.

Answer 1

As advised in the letter, уou can wrap actual testing command with cmake script. In your case it can be:
add_test(NAME test_title
COMMAND ${CMAKE_COMMAND}
-Darg1=${arg1}
-Darg2=${arg2}
-P ${CMAKE_CURRENT_SOURCE_DIR}/runtest.cmake
)
And the wrapper runtest.cmake can be:
execute_process(COMMAND executable ${arg1} ${arg2}
TIMEOUT 1000 # it should be less than in add_test
RESULT_VARIABLE status
)
file(REMOVE ${arg1}.txt)
file(REMOVE ${arg2}.txt)
if(status)
MESSAGE(FATAL_ERROR "Test executing status: ${status}")
endif()

Answer 2

I am not sure whether this option was available at the time of asking the question, but I used a hack along the lines of:
define a test: test_title
define another test: test_title_remove_file
depends on test_title (so test_title will be run first)
requires files you want to delete to exist (explicit is better than implicit)
calls cmake -E remove <file> doc
This way you'll have one fake extra test but at least it will tell you if there are any errors.
My implementation:
add_test(NAME test_title_remove_file
COMMAND ${CMAKE_COMMAND} -E remove
${arg1}
${CMAKE_CURRENT_BINARY_DIR}/${arg2}
)
set_tests_properties(test_title_remove_xmls PROPERTIES
DEPENDS test_title ## note it is your test_title
REQUIRED_FILES
${arg1};
${CMAKE_CURRENT_BINARY_DIR}/${arg2};
)