gnattest can add user-written tests to the main suite of the test driver. gnattest traverses the given packages and searches for test routines. All procedures with a single in out parameter of a type which is derived from AUnit.Test_Fixtures.Test_Fixture and that are declared in package specifications are added to the suites and are then executed by the test driver. (Set_Up and Tear_Down are filtered out.)
An example illustrates two ways of creating test harnesses for user-written tests. Directory additional_tests contains an AUnit-based test driver written by hand.
<install_prefix>/share/examples/gnattest/additional_tests/
To create a test driver for already-written tests, use the –harness-only option:
gnattest -Padditional/harness/harness.gpr --harness-dir=harness_only \
--harness-only
gnatmake -Pharness_only/test_driver.gpr
harness_only/test_runner
Additional tests can also be executed together with generated tests:
gnattest -Psimple.gpr --additional-tests=additional/harness/harness.gpr \
--harness-dir=mixing
gnatmake -Pmixing/test_driver.gpr
mixing/test_runner