CTest: How to set WORKING_DIRECTORY globally?

Recently, I have been building a simple test-suite with CTest. In its most simple form it looked something like this:

cmake_minimum_required(VERSION 3.7)
project(testsuite)
enable_testing()

add_test(NAME test_0
  WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
  COMMAND script.sh arg-0)

add_test(NAME test_1
  WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
  COMMAND script.sh arg-1)

add_test(NAME test_2
  WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
  COMMAND script.sh arg-2)

However, as it was growing, I quickly became tired of having to repeat WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} in every test.

Question: Is there a way to set WORKING_DIRECTORY globally (or, yet better, locally within each test subdirectory)? Something like

cmake_minimum_required(VERSION 3.7)
project(testsuite)
enable_testing()

set(DEFAULT_WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})

add_test(NAME test_0
  COMMAND script.sh arg-0)

add_test(NAME test_1
  COMMAND script.sh arg-1)

add_test(NAME test_2
  COMMAND script.sh arg-2)

The closest to a solution so far is a recommendation of my dear colleague to define a test-generating function:

cmake_minimum_required(VERSION 3.7)
project(testsuite)
enable_testing()

function(add_my_test TEST_NAME TEST_COMMAND TEST_ARGUMENTS)
  add_test(NAME ${TEST_NAME}
    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
    COMMAND ${TEST_COMMAND} ${TEST_ARGUMENTS})
endfunction()

add_my_test(test_0 script.sh arg-0)
add_my_test(test_1 script.sh arg-1)
add_my_test(test_2 script.sh arg-2)

This works fine but it feels like an unnecessary level of indirection.

In the end, I opted for using a fixture to copy the necessary parts into the build folder, test there and clean up again; this is probably a cleaner and more idiomatic solution. Nevertheless, out of curiosity I would still be interested in a solution to the original problem.

Solution

Is there a way to set WORKING_DIRECTORY globally

No. The default WORKING_DIRECTORY for add_test is specified in documentation.

This works fine

Do it. I would do:

macro(add_my_test)
  add_test(
    WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
    ${ARGV}
  )
endmacro()

add_my_test(
  NAME test_1
  COMMAND script.sh arg-1
)

You can also roll your own functionality 'Overwrite' cmake command using a macro and restore its default behavior , but I believe just a wrapper function is great and clean.