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selftests/bpf: Test_progs option for listing test names

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The program test_progs have some very useful ability to specify a list of
test name substrings for selecting which tests to run.

This patch add the ability to list the selected test names without running
them. This is practical for seeing which tests gets selected with given
select arguments (which can also contain a exclude list via --name-blacklist).

This output can also be used by shell-scripts in a for-loop:

 for N in $(./test_progs --list -t xdp); do \
   ./test_progs -t $N 2>&1 > result_test_${N}.log & \
 done ; wait

This features can also be used for looking up a test number and returning
a testname. If the selection was empty then a shell EXIT_FAILURE is
returned.  This is useful for scripting. e.g. like this:

 n=1;
 while [ $(./test_progs --list -n $n) ] ; do \
   ./test_progs -n $n ; n=$(( n+1 )); \
 done

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/159363985751.930467.9610992940793316982.stgit@firesoul
This commit is contained in:
Jesper Dangaard Brouer 2020-07-01 23:44:17 +02:00 committed by Alexei Starovoitov
parent 643e7233aa
commit c1f1f3656e
2 changed files with 16 additions and 0 deletions
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15
tools/testing/selftests/bpf/test_progs.c
View File

@ -367,6 +367,7 @@ enum ARG_KEYS {
ARG_VERIFIER_STATS = 's',
ARG_VERBOSE = 'v',
ARG_GET_TEST_CNT = 'c',
ARG_LIST_TEST_NAMES = 'l',
};
static const struct argp_option opts[] = {
@ -382,6 +383,8 @@ static const struct argp_option opts[] = {
"Verbose output (use -vv or -vvv for progressively verbose output)" },
{ "count", ARG_GET_TEST_CNT, NULL, 0,
"Get number of selected top-level tests " },
{ "list", ARG_LIST_TEST_NAMES, NULL, 0,
"List test names that would run (without running them) " },
{},
};
@ -517,6 +520,9 @@ static error_t parse_arg(int key, char *arg, struct argp_state *state)
case ARG_GET_TEST_CNT:
env->get_test_cnt = true;
break;
case ARG_LIST_TEST_NAMES:
env->list_test_names = true;
break;
case ARGP_KEY_ARG:
argp_usage(state);
break;
@ -665,6 +671,12 @@ int main(int argc, char **argv)
continue;
}
if (env.list_test_names) {
fprintf(env.stdout, "%s\n", test->test_name);
env.succ_cnt++;
continue;
}
test->run_test();
/* ensure last sub-test is finalized properly */
if (test->subtest_name)
@ -694,6 +706,9 @@ int main(int argc, char **argv)
goto out;
}
if (env.list_test_names)
goto out;
fprintf(stdout, "Summary: %d/%d PASSED, %d SKIPPED, %d FAILED\n",
env.succ_cnt, env.sub_succ_cnt, env.skip_cnt, env.fail_cnt);

1
tools/testing/selftests/bpf/test_progs.h
View File

@ -67,6 +67,7 @@ struct test_env {
bool jit_enabled;
bool get_test_cnt;
bool list_test_names;
struct prog_test_def *test;
FILE *stdout;