+ @echo " STEP=[yes|no] - ease debugging by stepping through a testcase"
+ @echo " SANITY=[yes|no] - perform sanity import of vpp-api/sanity vpp run before running tests (default: yes)"
+ @echo " EXTENDED_TESTS=[1|y] - run extended tests"
+ @echo " TEST=<filter> - filter the set of tests:"
+ @echo " by file-name - only run tests from specified file, e.g. TEST=test_bfd selects all tests from test_bfd.py"
+ @echo " by file-suffix - same as file-name, but 'test_' is omitted e.g. TEST=bfd selects all tests from test_bfd.py"
+ @echo " by wildcard - wildcard filter is <file>.<class>.<test function>, each can be replaced by '*'"
+ @echo " e.g. TEST='test_bfd.*.*' is equivalent to above example of filter by file-name"
+ @echo " TEST='bfd.*.*' is equivalent to above example of filter by file-suffix"
+ @echo " TEST='bfd.BFDAPITestCase.*' selects all tests from test_bfd.py which are part of BFDAPITestCase class"
+ @echo " TEST='bfd.BFDAPITestCase.test_add_bfd' selects a single test named test_add_bfd from test_bfd.py/BFDAPITestCase"
+ @echo " TEST='*.*.test_add_bfd' selects all test functions named test_add_bfd from all files/classes"
+ @echo ""
+ @echo " VPP_ZOMBIE_NOCHECK=1 - skip checking for vpp (zombie) processes (CAUTION)"
+ @echo " COREDUMP_SIZE=<size> - pass <size> as unix { coredump-size <size> } argument to vpp"
+ @echo " e.g. COREDUMP_SIZE=4g"
+ @echo " COREDUMP_SIZE=unlimited"
+ @echo " EXTERN_TESTS=<path> - path to out-of-tree test_<name>.py files containing test cases"
+ @echo " EXTERN_PLUGINS=<path>- path to out-of-tree plugins to be loaded by vpp under test"
+ @echo " EXTERN_COV_DIR=<path>- path to out-of-tree prefix, where source, object and .gcda files can be found for coverage report"
+ @echo ""
+ @echo " PROFILE=1 - enable profiling of test framework via cProfile module"
+ @echo " PROFILE_SORT_BY=opt - sort profiling report by opt - consult cProfile documentation for possible values (default: cumtime)"
+ @echo " PROFILE_OUTPUT=file - output profiling info to file - use absolute path (default: stdout)"
+ @echo ""
+ @echo " TEST_DEBUG=1 - turn on debugging of the test framework itself (expert)"
+ @echo ""
+ @echo " SKIP_AARCH64=1 - skip tests that are failing on the ARM platorm in FD.io CI"