From: David Gow davidgow@google.com

[ Upstream commit 37dbb4c7c7442dbfc9b651e4ddd4afe30b26afc9 ]

It's possible that a parameterised test could end up with zero parameters. At the moment, the test function will nevertheless be called with NULL as the parameter. Instead, don't try to run the test code, and just mark the test as SKIPped.

Reported-by: Daniel Latypov dlatypov@google.com Signed-off-by: David Gow davidgow@google.com Reviewed-by: Daniel Latypov dlatypov@google.com Reviewed-by: Brendan Higgins brendanhiggins@google.com Signed-off-by: Shuah Khan skhan@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- lib/kunit/test.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/lib/kunit/test.c b/lib/kunit/test.c index 3bd741e50a2d3..f96498ede2cc5 100644 --- a/lib/kunit/test.c +++ b/lib/kunit/test.c @@ -504,16 +504,18 @@ int kunit_run_tests(struct kunit_suite *suite) struct kunit_result_stats param_stats = { 0 }; test_case->status = KUNIT_SKIPPED;

- if (test_case->generate_params) { + if (!test_case->generate_params) { + /* Non-parameterised test. */ + kunit_run_case_catch_errors(suite, test_case, &test); + kunit_update_stats(&param_stats, test.status); + } else { /* Get initial param. */ param_desc[0] = '\0'; test.param_value = test_case->generate_params(NULL, param_desc); - }

- do { - kunit_run_case_catch_errors(suite, test_case, &test); + while (test.param_value) { + kunit_run_case_catch_errors(suite, test_case, &test);

- if (test_case->generate_params) { if (param_desc[0] == '\0') { snprintf(param_desc, sizeof(param_desc), "param-%d", test.param_index); @@ -530,11 +532,11 @@ int kunit_run_tests(struct kunit_suite *suite) param_desc[0] = '\0'; test.param_value = test_case->generate_params(test.param_value, param_desc); test.param_index++; - }

- kunit_update_stats(&param_stats, test.status); + kunit_update_stats(&param_stats, test.status); + } + }

- } while (test.param_value);

kunit_print_test_stats(&test, param_stats);