include(RunCTest)

if(NOT DEFINED TIMEOUT)
  # Give the process time to load and start running.
  set(TIMEOUT 4)
endif()

function(run_ctest_timeout CASE_NAME)
  configure_file(${RunCMake_SOURCE_DIR}/TestTimeout.c
                 ${RunCMake_BINARY_DIR}/${CASE_NAME}/TestTimeout.c COPYONLY)
  run_ctest(${CASE_NAME} ${ARGN})
endfunction()

run_ctest_timeout(Basic)

if(WIN32)
  string(CONCAT CASE_CMAKELISTS_SUFFIX_CODE [[
    set_tests_properties(TestTimeout PROPERTIES
      TIMEOUT_SIGNAL_NAME SIGUSR1
      TIMEOUT_SIGNAL_GRACE_PERIOD 1.2
      )
]])
  run_ctest_timeout(SignalWindows)
  unset(CASE_CMAKELISTS_SUFFIX_CODE)

else()
  string(CONCAT CASE_CMAKELISTS_SUFFIX_CODE [[
    target_compile_definitions(TestTimeout PRIVATE FORK)
]])
  run_ctest_timeout(Fork)
  unset(CASE_CMAKELISTS_SUFFIX_CODE)

  string(CONCAT CASE_CMAKELISTS_SUFFIX_CODE [[
    target_compile_definitions(TestTimeout PRIVATE SIGNAL)
    set_tests_properties(TestTimeout PROPERTIES
      TIMEOUT_SIGNAL_NAME SIGUSR1
      TIMEOUT_SIGNAL_GRACE_PERIOD 1.2
      )
]])
  run_ctest_timeout(Signal)
  unset(CASE_CMAKELISTS_SUFFIX_CODE)

  string(CONCAT CASE_CMAKELISTS_SUFFIX_CODE [[
    target_compile_definitions(TestTimeout PRIVATE SIGNAL SIGNAL_IGNORE=1)
    set_tests_properties(TestTimeout PROPERTIES
      TIMEOUT_SIGNAL_NAME SIGUSR1
      # Use default TIMEOUT_SIGNAL_GRACE_PERIOD of 1.
      )
]])
  run_ctest_timeout(SignalIgnore)
  unset(CASE_CMAKELISTS_SUFFIX_CODE)

  string(CONCAT CASE_CMAKELISTS_SUFFIX_CODE [[
    set_tests_properties(TestTimeout PROPERTIES
      TIMEOUT_SIGNAL_NAME NOTASIG
      )
]])
  run_ctest_timeout(SignalUnknown)
  unset(CASE_CMAKELISTS_SUFFIX_CODE)

  string(CONCAT CASE_CMAKELISTS_SUFFIX_CODE [[
    set_tests_properties(TestTimeout PROPERTIES
      TIMEOUT_SIGNAL_NAME SIGUSR1
      TIMEOUT_SIGNAL_GRACE_PERIOD -1
      )
]])
  run_ctest_timeout(SignalGraceLow)
  unset(CASE_CMAKELISTS_SUFFIX_CODE)

  string(CONCAT CASE_CMAKELISTS_SUFFIX_CODE [[
    set_tests_properties(TestTimeout PROPERTIES
      TIMEOUT_SIGNAL_NAME SIGUSR1
      TIMEOUT_SIGNAL_GRACE_PERIOD 1000
      )
]])
  run_ctest_timeout(SignalGraceHigh)
  unset(CASE_CMAKELISTS_SUFFIX_CODE)
endif()

block()
  # An explicit zero TIMEOUT test property means "no timeout".
  set(TIMEOUT 0)
  # The test sleeps for 4 seconds longer than the TIMEOUT value.
  # Set a default timeout to less than that so that the test will
  # timeout if the zero TIMEOUT does not suppress it.
  run_ctest_timeout(ZeroOverridesFlag --timeout 2)
  set(CASE_TEST_PREFIX_CODE "set(CTEST_TEST_TIMEOUT 2)")
  run_ctest_timeout(ZeroOverridesVar)
endblock()