linux-kernel - [RFC v2 03/12] kunit: test: add concept of post conditions

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Date:   Mon, 12 Oct 2020 15:20:41 -0700
From:   Daniel Latypov <dlatypov@...gle.com>
To:     dlatypov@...gle.com
Cc:     alan.maguire@...cle.com, brendanhiggins@...gle.com,
        davidgow@...gle.com, keescook@...omium.org,
        kunit-dev@...glegroups.com, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, mcgrof@...nel.org,
        sboyd@...nel.org, skhan@...uxfoundation.org
Subject: [RFC v2 03/12] kunit: test: add concept of post conditions

From: Brendan Higgins <brendanhiggins@...gle.com>

Add a way to specify that certain conditions must be met at the end of a
test case.

Signed-off-by: Brendan Higgins <brendanhiggins@...gle.com>
Signed-off-by: Daniel Latypov <dlatypov@...gle.com>
---
 include/kunit/test.h |  6 ++++++
 lib/kunit/test.c     | 11 +++++++++++
 2 files changed, 17 insertions(+)

diff --git a/include/kunit/test.h b/include/kunit/test.h
index 687782fa44d9..0eb3abb00da4 100644
--- a/include/kunit/test.h
+++ b/include/kunit/test.h
@@ -190,6 +190,11 @@ struct kunit_suite {
 	char *log;
 };
 
+struct kunit_post_condition {
+	struct list_head node;
+	void (*validate)(struct kunit_post_condition *condition);
+};
+
 /**
  * struct kunit - represents a running instance of a test.
  *
@@ -223,6 +228,7 @@ struct kunit {
 	 * protect it with some type of lock.
 	 */
 	struct list_head resources; /* Protected by lock. */
+	struct list_head post_conditions;
 };
 
 void kunit_init_test(struct kunit *test, const char *name, char *log);
diff --git a/lib/kunit/test.c b/lib/kunit/test.c
index 670d1cc9c105..4e8c74c89073 100644
--- a/lib/kunit/test.c
+++ b/lib/kunit/test.c
@@ -228,6 +228,7 @@ void kunit_init_test(struct kunit *test, const char *name, char *log)
 {
 	spin_lock_init(&test->lock);
 	INIT_LIST_HEAD(&test->resources);
+	INIT_LIST_HEAD(&test->post_conditions);
 	test->name = name;
 	test->log = log;
 	if (test->log)
@@ -269,6 +270,16 @@ static void kunit_case_internal_cleanup(struct kunit *test)
 static void kunit_run_case_cleanup(struct kunit *test,
 				   struct kunit_suite *suite)
 {
+	struct kunit_post_condition *condition, *condition_safe;
+
+	list_for_each_entry_safe(condition,
+				 condition_safe,
+				 &test->post_conditions,
+				 node) {
+		condition->validate(condition);
+		list_del(&condition->node);
+	}
+
 	if (suite->exit)
 		suite->exit(test);
 
-- 
2.28.0.1011.ga647a8990f-goog