set_property(GLOBAL PROPERTY COVERAGE_FILES "")
function(gotcha_add_test)
  add_test(${ARGV})
  set_tests_properties(${ARGV0} PROPERTIES
    ENVIRONMENT "LLVM_PROFILE_FILE=${ARGV0}.profraw")
  get_property(OLD_CF GLOBAL PROPERTY COVERAGE_FILES)
  set(NEW_CF ${OLD_CF} ${CMAKE_CURRENT_BINARY_DIR}/${ARGV0}.profraw)
  set_property(GLOBAL PROPERTY COVERAGE_FILES ${NEW_CF})
endfunction()

macro(environment_add target type property)
  get_property(local_env ${type} ${target} PROPERTY ENVIRONMENT)
  set_property(${type} ${target} PROPERTY ENVIRONMENT ${local_env} ${property})
endmacro()

macro(setup_coverage_target)
  get_property(COVERAGE_FILE_LIST GLOBAL PROPERTY COVERAGE_FILES)
  add_custom_command(OUTPUT default.profdata COMMAND llvm-profdata merge -sparse ${COVERAGE_FILE_LIST} -o default.profdata VERBATIM)
  add_custom_target(merged_coverage DEPENDS default.profdata)
endmacro()