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authorDavid Gow <davidgow@google.com>2021-06-24 23:58:12 -0700
committerShuah Khan <skhan@linuxfoundation.org>2021-06-25 11:31:03 -0600
commit6d2426b2f258da19fbe5fa1c93a5695460390eac (patch)
treed7d61a00ca25fea95d9e7b0e3534dbd0fa1bd7a6 /include/kunit
parent824945a5b0ff8260a568b87968172d728446d8f7 (diff)
downloadlwn-6d2426b2f258da19fbe5fa1c93a5695460390eac.tar.gz
lwn-6d2426b2f258da19fbe5fa1c93a5695460390eac.zip
kunit: Support skipped tests
The kunit_mark_skipped() macro marks the current test as "skipped", with the provided reason. The kunit_skip() macro will mark the test as skipped, and abort the test. The TAP specification supports this "SKIP directive" as a comment after the "ok" / "not ok" for a test. See the "Directives" section of the TAP spec for details: https://testanything.org/tap-specification.html#directives The 'success' field for KUnit tests is replaced with a kunit_status enum, which can be SUCCESS, FAILURE, or SKIPPED, combined with a 'status_comment' containing information on why a test was skipped. A new 'kunit_status' test suite is added to test this. Signed-off-by: David Gow <davidgow@google.com> Tested-by: Marco Elver <elver@google.com> Reviewed-by: Daniel Latypov <dlatypov@google.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Diffstat (limited to 'include/kunit')
-rw-r--r--include/kunit/test.h73
1 files changed, 67 insertions, 6 deletions
diff --git a/include/kunit/test.h b/include/kunit/test.h
index e79ac81f5fca..35b0aed9b739 100644
--- a/include/kunit/test.h
+++ b/include/kunit/test.h
@@ -97,6 +97,9 @@ struct kunit;
/* Maximum size of parameter description string. */
#define KUNIT_PARAM_DESC_SIZE 128
+/* Maximum size of a status comment. */
+#define KUNIT_STATUS_COMMENT_SIZE 256
+
/*
* TAP specifies subtest stream indentation of 4 spaces, 8 spaces for a
* sub-subtest. See the "Subtests" section in
@@ -106,6 +109,18 @@ struct kunit;
#define KUNIT_SUBSUBTEST_INDENT " "
/**
+ * enum kunit_status - Type of result for a test or test suite
+ * @KUNIT_SUCCESS: Denotes the test suite has not failed nor been skipped
+ * @KUNIT_FAILURE: Denotes the test has failed.
+ * @KUNIT_SKIPPED: Denotes the test has been skipped.
+ */
+enum kunit_status {
+ KUNIT_SUCCESS,
+ KUNIT_FAILURE,
+ KUNIT_SKIPPED,
+};
+
+/**
* struct kunit_case - represents an individual test case.
*
* @run_case: the function representing the actual test case.
@@ -148,13 +163,20 @@ struct kunit_case {
const void* (*generate_params)(const void *prev, char *desc);
/* private: internal use only. */
- bool success;
+ enum kunit_status status;
char *log;
};
-static inline char *kunit_status_to_string(bool status)
+static inline char *kunit_status_to_ok_not_ok(enum kunit_status status)
{
- return status ? "ok" : "not ok";
+ switch (status) {
+ case KUNIT_SKIPPED:
+ case KUNIT_SUCCESS:
+ return "ok";
+ case KUNIT_FAILURE:
+ return "not ok";
+ }
+ return "invalid";
}
/**
@@ -212,6 +234,7 @@ struct kunit_suite {
struct kunit_case *test_cases;
/* private: internal use only */
+ char status_comment[KUNIT_STATUS_COMMENT_SIZE];
struct dentry *debugfs;
char *log;
};
@@ -245,19 +268,21 @@ struct kunit {
* be read after the test case finishes once all threads associated
* with the test case have terminated.
*/
- bool success; /* Read only after test_case finishes! */
spinlock_t lock; /* Guards all mutable test state. */
+ enum kunit_status status; /* Read only after test_case finishes! */
/*
* Because resources is a list that may be updated multiple times (with
* new resources) from any thread associated with a test case, we must
* protect it with some type of lock.
*/
struct list_head resources; /* Protected by lock. */
+
+ char status_comment[KUNIT_STATUS_COMMENT_SIZE];
};
static inline void kunit_set_failure(struct kunit *test)
{
- WRITE_ONCE(test->success, false);
+ WRITE_ONCE(test->status, KUNIT_FAILURE);
}
void kunit_init_test(struct kunit *test, const char *name, char *log);
@@ -348,7 +373,7 @@ static inline int kunit_run_all_tests(void)
#define kunit_suite_for_each_test_case(suite, test_case) \
for (test_case = suite->test_cases; test_case->run_case; test_case++)
-bool kunit_suite_has_succeeded(struct kunit_suite *suite);
+enum kunit_status kunit_suite_has_succeeded(struct kunit_suite *suite);
/*
* Like kunit_alloc_resource() below, but returns the struct kunit_resource
@@ -640,6 +665,42 @@ void kunit_cleanup(struct kunit *test);
void __printf(2, 3) kunit_log_append(char *log, const char *fmt, ...);
+/**
+ * kunit_mark_skipped() - Marks @test_or_suite as skipped
+ *
+ * @test_or_suite: The test context object.
+ * @fmt: A printk() style format string.
+ *
+ * Marks the test as skipped. @fmt is given output as the test status
+ * comment, typically the reason the test was skipped.
+ *
+ * Test execution continues after kunit_mark_skipped() is called.
+ */
+#define kunit_mark_skipped(test_or_suite, fmt, ...) \
+ do { \
+ WRITE_ONCE((test_or_suite)->status, KUNIT_SKIPPED); \
+ scnprintf((test_or_suite)->status_comment, \
+ KUNIT_STATUS_COMMENT_SIZE, \
+ fmt, ##__VA_ARGS__); \
+ } while (0)
+
+/**
+ * kunit_skip() - Marks @test_or_suite as skipped
+ *
+ * @test_or_suite: The test context object.
+ * @fmt: A printk() style format string.
+ *
+ * Skips the test. @fmt is given output as the test status
+ * comment, typically the reason the test was skipped.
+ *
+ * Test execution is halted after kunit_skip() is called.
+ */
+#define kunit_skip(test_or_suite, fmt, ...) \
+ do { \
+ kunit_mark_skipped((test_or_suite), fmt, ##__VA_ARGS__);\
+ kunit_try_catch_throw(&((test_or_suite)->try_catch)); \
+ } while (0)
+
/*
* printk and log to per-test or per-suite log buffer. Logging only done
* if CONFIG_KUNIT_DEBUGFS is 'y'; if it is 'n', no log is allocated/used.