This is xnu-11215.1.10. See this file in:
Directory listing for xnu-11215.1.10//bsd/tests
bsd_tests.c
copyio_tests.c
ctrr_test_sysctl.c
pmap_test_sysctl.c
ptrauth_data_tests_sysctl.c
readonly_proc_tests_sysctl.c
sau_tests_sysctl.c
stack_chk_tests_sysctl.c
tree_tests_sysctl.c
vm_parameter_validation_kern_bsd.c