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diff --git a/docs/developer/build-run-debug/testing_vpp.rst b/docs/developer/build-run-debug/testing_vpp.rst new file mode 100644 index 00000000000..ca9a09efb71 --- /dev/null +++ b/docs/developer/build-run-debug/testing_vpp.rst @@ -0,0 +1,140 @@ +Testing VPP +=========== + +As of this writing, the vpp source tree includes over 1,000 unit test +vectors. Best practices prior to pushing patches for code review: make +sure that all of the “make test” test vectors pass. + +We attempt to maintain the top-level “make test-help” command so that it +accurately describes all of the “make test” options. + +Examples +-------- + +Basic test run, all test vectors, single-vpp instance, optimized image: + +:: + + $ make test + +10-way parallel basic test run: + +:: + + $ make TEST_JOBS=10 test + +Run a specific test suite (mpls, in this case): + +:: + + $ make TEST=test_mpls test + +Run a specific test suite, debug image, pause prior to running the test +suite; attach to the vpp image in gdb: + +:: + + $ make TEST=xxx DEBUG=gdb test-debug + +Detailed Documentation +---------------------- + +Current “make test-help” output: + +:: + + $ make test-help + test - build and run (basic) functional tests + test-debug - build and run (basic) functional tests (debug build) + test-all - build and run functional and extended tests + test-all-debug - build and run functional and extended tests (debug build) + retest - run functional tests + retest-debug - run functional tests (debug build) + retest-all - run functional and extended tests + retest-all-debug - run functional and extended tests (debug build) + test-cov - generate code coverage report for test framework + test-gcov - build and run functional tests (gcov build) + test-wipe - wipe (temporary) files generated by unit tests + test-wipe-cov - wipe code coverage report for test framework + test-wipe-doc - wipe documentation for test framework + test-wipe-papi - rebuild vpp_papi sources + test-wipe-all - wipe (temporary) files generated by unit tests, docs, and coverage + test-shell - enter shell with test environment + test-shell-debug - enter shell with test environment (debug build) + test-checkstyle - check PEP8 compliance for test framework + test-refresh-deps - refresh the Python dependencies for the tests + + Arguments controlling test runs: + V=[0|1|2] - set test verbosity level + 0=ERROR, 1=INFO, 2=DEBUG + TEST_JOBS=[<n>|auto] - use at most <n> parallel python processes for test execution, if auto, set to number of available cpus (default: 1) + MAX_VPP_CPUS=[<n>|auto]- use at most <n> cpus for running vpp main and worker threads, if auto, set to number of available cpus (default: auto) + CACHE_OUTPUT=[0|1] - cache VPP stdout/stderr and log as one block after test finishes (default: 1) + FAILFAST=[0|1] - fail fast if 1, complete all tests if 0 + TIMEOUT=<timeout> - fail test suite if any single test takes longer than <timeout> (in seconds) to finish (default: 600) + RETRIES=<n> - retry failed tests <n> times + DEBUG=<type> - set VPP debugging kind + DEBUG=core - detect coredump and load it in gdb on crash + DEBUG=gdb - allow easy debugging by printing VPP PID + and waiting for user input before running + and tearing down a testcase + DEBUG=gdbserver - run gdb inside a gdb server, otherwise + same as above + DEBUG=attach - attach test case to already running vpp in gdb (see test-start-vpp-in-gdb) + + STEP=[yes|no] - ease debugging by stepping through a testcase + SANITY=[yes|no] - perform sanity import of vpp-api/sanity vpp run before running tests (default: yes) + EXTENDED_TESTS=[1|y] - used by '[re]test-all' & '[re]test-all-debug' to run extended tests + TEST=<filter> - filter the set of tests: + by file-name - only run tests from specified file, e.g. TEST=test_bfd selects all tests from test_bfd.py + by file-suffix - same as file-name, but 'test_' is omitted e.g. TEST=bfd selects all tests from test_bfd.py + by wildcard - wildcard filter is <file>.<class>.<test function>, each can be replaced by '*' + e.g. TEST='test_bfd.*.*' is equivalent to above example of filter by file-name + TEST='bfd.*.*' is equivalent to above example of filter by file-suffix + TEST='bfd.BFDAPITestCase.*' selects all tests from test_bfd.py which are part of BFDAPITestCase class + TEST='bfd.BFDAPITestCase.test_add_bfd' selects a single test named test_add_bfd from test_bfd.py/BFDAPITestCase + TEST='*.*.test_add_bfd' selects all test functions named test_add_bfd from all files/classes + + VARIANT=<variant> - specify which march node variant to unit test + e.g. VARIANT=skx test the skx march variants + e.g. VARIANT=icl test the icl march variants + + COREDUMP_SIZE=<size> - pass <size> as unix { coredump-size <size> } argument to vpp + e.g. COREDUMP_SIZE=4g + COREDUMP_SIZE=unlimited + COREDUMP_COMPRESS=1 - compress core files if not debugging them + EXTERN_TESTS=<path> - path to out-of-tree test_<name>.py files containing test cases + EXTERN_PLUGINS=<path> - path to out-of-tree plugins to be loaded by vpp under test + EXTERN_COV_DIR=<path> - path to out-of-tree prefix, where source, object and .gcda files can be found for coverage report + + PROFILE=1 - enable profiling of test framework via cProfile module + PROFILE_SORT_BY=opt - sort profiling report by opt - consult cProfile documentation for possible values (default: cumtime) + PROFILE_OUTPUT=file - output profiling info to file - use absolute path (default: stdout) + + TEST_DEBUG=1 - turn on debugging of the test framework itself (expert) + + SKIP_AARCH64=1 - skip tests that are failing on the ARM platorm in FD.io CI + + RND_SEED=seed - Seed RND with given seed + + Starting VPP in GDB for use with DEBUG=attach: + + test-start-vpp-in-gdb - start VPP in gdb (release) + test-start-vpp-debug-in-gdb - start VPP in gdb (debug) + + Arguments controlling VPP in GDB runs: + + VPP_IN_GDB_TMP_DIR - specify directory to run VPP IN (default: /tmp/unittest-attach-gdb) + VPP_IN_GDB_NO_RMDIR=0 - don't remove existing tmp dir but fail instead + VPP_IN_GDB_CMDLINE=1 - add 'interactive' to VPP arguments to run with command line + + Creating test documentation + test-doc - generate documentation for test framework + test-wipe-doc - wipe documentation for test framework + + Creating test code coverage report + test-cov - generate code coverage report for test framework + test-wipe-cov - wipe code coverage report for test framework + + Verifying code-style + test-checkstyle - check PEP8 compliance |