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Date:   Mon, 16 Mar 2020 15:56:43 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     shuah@...nel.org, keescook@...omium.org
Cc:     luto@...capital.net, wad@...omium.org,
        linux-kselftest@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-team@...com,
        Tim.Bird@...y.com, Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH v3 3/6] kselftest: create fixture objects

Grouping tests by fixture will allow us to parametrize
test runs. Create full objects for fixtures.

Add a "global" fixture for tests without a fixture.

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
 tools/testing/selftests/kselftest_harness.h | 46 ++++++++++++++++-----
 1 file changed, 35 insertions(+), 11 deletions(-)

diff --git a/tools/testing/selftests/kselftest_harness.h b/tools/testing/selftests/kselftest_harness.h
index aaf58fffc8f7..0f68943d6f04 100644
--- a/tools/testing/selftests/kselftest_harness.h
+++ b/tools/testing/selftests/kselftest_harness.h
@@ -169,8 +169,10 @@
 #define __TEST_IMPL(test_name, _signal) \
 	static void test_name(struct __test_metadata *_metadata); \
 	static struct __test_metadata _##test_name##_object = \
-		{ .name = "global." #test_name, \
-		  .fn = &test_name, .termsig = _signal, \
+		{ .name = #test_name, \
+		  .fn = &test_name, \
+		  .fixture = &_fixture_global, \
+		  .termsig = _signal, \
 		  .timeout = TEST_TIMEOUT_DEFAULT, }; \
 	static void __attribute__((constructor)) _register_##test_name(void) \
 	{ \
@@ -212,10 +214,12 @@
  * populated and cleaned up using FIXTURE_SETUP() and FIXTURE_TEARDOWN().
  */
 #define FIXTURE(fixture_name) \
+	static struct __fixture_metadata _##fixture_name##_fixture_object = \
+		{ .name =  #fixture_name, }; \
 	static void __attribute__((constructor)) \
 	_register_##fixture_name##_data(void) \
 	{ \
-		__fixture_count++; \
+		__register_fixture(&_##fixture_name##_fixture_object); \
 	} \
 	FIXTURE_DATA(fixture_name)
 
@@ -309,8 +313,9 @@
 	} \
 	static struct __test_metadata \
 		      _##fixture_name##_##test_name##_object = { \
-		.name = #fixture_name "." #test_name, \
+		.name = #test_name, \
 		.fn = &wrapper_##fixture_name##_##test_name, \
+		.fixture = &_##fixture_name##_fixture_object, \
 		.termsig = signal, \
 		.timeout = tmout, \
 	 }; \
@@ -654,10 +659,33 @@
 	} \
 }
 
+/* Contains all the information about a fixture */
+struct __fixture_metadata {
+	const char *name;
+	struct __fixture_metadata *prev, *next;
+} _fixture_global __attribute__((unused)) = {
+	.name = "global",
+	.prev = &_fixture_global,
+};
+
+static struct __fixture_metadata *__fixture_list = &_fixture_global;
+static unsigned int __fixture_count;
+static int __constructor_order;
+
+#define _CONSTRUCTOR_ORDER_FORWARD   1
+#define _CONSTRUCTOR_ORDER_BACKWARD -1
+
+static inline void __register_fixture(struct __fixture_metadata *f)
+{
+	__fixture_count++;
+	__LIST_APPEND(__fixture_list, f);
+}
+
 /* Contains all the information for test execution and status checking. */
 struct __test_metadata {
 	const char *name;
 	void (*fn)(struct __test_metadata *);
+	struct __fixture_metadata *fixture;
 	int termsig;
 	int passed;
 	int trigger; /* extra handler after the evaluation */
@@ -670,11 +698,6 @@ struct __test_metadata {
 /* Storage for the (global) tests to be run. */
 static struct __test_metadata *__test_list;
 static unsigned int __test_count;
-static unsigned int __fixture_count;
-static int __constructor_order;
-
-#define _CONSTRUCTOR_ORDER_FORWARD   1
-#define _CONSTRUCTOR_ORDER_BACKWARD -1
 
 /*
  * Since constructors are called in reverse order, reverse the test
@@ -708,7 +731,7 @@ void __run_test(struct __test_metadata *t)
 
 	t->passed = 1;
 	t->trigger = 0;
-	printf("[ RUN      ] %s\n", t->name);
+	printf("[ RUN      ] %s.%s\n", t->fixture->name, t->name);
 	alarm(t->timeout);
 	child_pid = fork();
 	if (child_pid < 0) {
@@ -757,7 +780,8 @@ void __run_test(struct __test_metadata *t)
 				status);
 		}
 	}
-	printf("[     %4s ] %s\n", (t->passed ? "OK" : "FAIL"), t->name);
+	printf("[     %4s ] %s.%s\n", (t->passed ? "OK" : "FAIL"),
+	       t->fixture->name, t->name);
 	alarm(0);
 }
 
-- 
2.24.1

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