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kunit: test: add test plan to KUnit TAP format

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TAP 14 allows an optional test plan to be emitted before the start of
the start of testing[1]; this is valuable because it makes it possible
for a test harness to detect whether the number of tests run matches the
number of tests expected to be run, ensuring that no tests silently
failed.

Link[1]: https://github.com/isaacs/testanything.github.io/blob/tap14/tap-version-14-specification.md#the-plan
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Brendan Higgins
2020-08-04 13:47:44 -07:00
committed by Shuah Khan
parent 8c0d884986
commit 45dcbb6f5e
6 changed files with 82 additions and 25 deletions
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17
lib/kunit/executor.c
View File

@@ -11,10 +11,27 @@ extern struct kunit_suite * const * const __kunit_suites_end[];
#if IS_BUILTIN(CONFIG_KUNIT)
static void kunit_print_tap_header(void)
{
struct kunit_suite * const * const *suites, * const *subsuite;
int num_of_suites = 0;
for (suites = __kunit_suites_start;
suites < __kunit_suites_end;
suites++)
for (subsuite = *suites; *subsuite != NULL; subsuite++)
num_of_suites++;
pr_info("TAP version 14\n");
pr_info("1..%d\n", num_of_suites);
}
int kunit_run_all_tests(void)
{
struct kunit_suite * const * const *suites;
kunit_print_tap_header();
for (suites = __kunit_suites_start;
suites < __kunit_suites_end;
suites++)

11
lib/kunit/test.c
View File

@@ -20,16 +20,6 @@ static void kunit_set_failure(struct kunit *test)
WRITE_ONCE(test->success, false);
}
static void kunit_print_tap_version(void)
{
static bool kunit_has_printed_tap_version;
if (!kunit_has_printed_tap_version) {
pr_info("TAP version 14\n");
kunit_has_printed_tap_version = true;
}
}
/*
* Append formatted message to log, size of which is limited to
* KUNIT_LOG_SIZE bytes (including null terminating byte).
@@ -69,7 +59,6 @@ EXPORT_SYMBOL_GPL(kunit_suite_num_test_cases);
static void kunit_print_subtest_start(struct kunit_suite *suite)
{
kunit_print_tap_version();
kunit_log(KERN_INFO, suite, KUNIT_SUBTEST_INDENT "# Subtest: %s",
suite->name);
kunit_log(KERN_INFO, suite, KUNIT_SUBTEST_INDENT "1..%zd",