This is xnu-8019. See this file in:
Directory listing for xnu-8019//osfmk/tests
Makefile
README.md
bitmap_test.c
kernel_tests.c
ktest.c
ktest.h
ktest_accessor.c
ktest_emit.c
ktest_global.c
ktest_internal.h
pmap_tests.c
ptrauth_data_tests.c
test_thread_call.c
vfp_state_test.c
xnupost.h