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Date: Thu, 12 Mar 2020 20:17:51 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: shuah@...nel.org
Cc: keescook@...omium.org, luto@...capital.net, wad@...omium.org,
linux-kselftest@...r.kernel.org, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, kernel-team@...com,
Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH 4/5] kselftest: add fixture parameters
Allow users to pass parameters to fixtures.
Each fixture will be evaluated for each of its parameter
sets.
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
Documentation/dev-tools/kselftest.rst | 3 +-
tools/testing/selftests/kselftest_harness.h | 159 ++++++++++++++++----
2 files changed, 135 insertions(+), 27 deletions(-)
diff --git a/Documentation/dev-tools/kselftest.rst b/Documentation/dev-tools/kselftest.rst
index 61ae13c44f91..3c41f7494762 100644
--- a/Documentation/dev-tools/kselftest.rst
+++ b/Documentation/dev-tools/kselftest.rst
@@ -301,7 +301,8 @@ Helpers
.. kernel-doc:: tools/testing/selftests/kselftest_harness.h
:functions: TH_LOG TEST TEST_SIGNAL FIXTURE FIXTURE_DATA FIXTURE_SETUP
- FIXTURE_TEARDOWN TEST_F TEST_HARNESS_MAIN
+ FIXTURE_TEARDOWN TEST_F TEST_HARNESS_MAIN FIXTURE_PARAMS
+ FIXTURE_PARAMS_ADD
Operators
---------
diff --git a/tools/testing/selftests/kselftest_harness.h b/tools/testing/selftests/kselftest_harness.h
index 7a3392941a5b..78b963f75d3b 100644
--- a/tools/testing/selftests/kselftest_harness.h
+++ b/tools/testing/selftests/kselftest_harness.h
@@ -168,9 +168,15 @@
#define __TEST_IMPL(test_name, _signal) \
static void test_name(struct __test_metadata *_metadata); \
+ static inline void wrapper_##test_name( \
+ struct __test_metadata *_metadata, \
+ struct __fixture_params_metadata *p) \
+ { \
+ test_name(_metadata); \
+ } \
static struct __test_metadata _##test_name##_object = \
{ .name = #test_name, \
- .fn = &test_name, \
+ .fn = &wrapper_##test_name, \
.fixture = &_fixture_global, \
.termsig = _signal, \
.timeout = TEST_TIMEOUT_DEFAULT, }; \
@@ -214,6 +220,7 @@
* populated and cleaned up using FIXTURE_SETUP() and FIXTURE_TEARDOWN().
*/
#define FIXTURE(fixture_name) \
+ FIXTURE_PARAMS(fixture_name); \
static struct __fixture_metadata _##fixture_name##_fixture_object = \
{ .name = #fixture_name, }; \
static void __attribute__((constructor)) \
@@ -245,7 +252,9 @@
#define FIXTURE_SETUP(fixture_name) \
void fixture_name##_setup( \
struct __test_metadata __attribute__((unused)) *_metadata, \
- FIXTURE_DATA(fixture_name) __attribute__((unused)) *self)
+ FIXTURE_DATA(fixture_name) __attribute__((unused)) *self, \
+ const FIXTURE_PARAMS(fixture_name) __attribute__((unused)) *params)
+
/**
* FIXTURE_TEARDOWN(fixture_name)
* *_metadata* is included so that EXPECT_* and ASSERT_* work correctly.
@@ -267,6 +276,56 @@
struct __test_metadata __attribute__((unused)) *_metadata, \
FIXTURE_DATA(fixture_name) __attribute__((unused)) *self)
+/**
+ * FIXTURE_PARAMS(fixture_name) - Optionally called once per fixture
+ * to declare fixture parameters
+ *
+ * @fixture_name: fixture name
+ *
+ * .. code-block:: c
+ *
+ * FIXTURE_PARAMS(datatype name) {
+ * type property1;
+ * ...
+ * };
+ *
+ * Defines type of constant parameters provided to FIXTURE_SETUP() and TEST_F()
+ * as *params*.
+ */
+#define FIXTURE_PARAMS(fixture_name) struct _fixture_params_##fixture_name
+
+/**
+ * FIXTURE_PARAMS_ADD(fixture_name, params_name) - Called once per fixture
+ * params to setup the data and register
+ *
+ * @fixture_name: fixture name
+ * @params_name: name of the parameter set
+ *
+ * .. code-block:: c
+ *
+ * FIXTURE_ADD(datatype name) {
+ * .property1 = val1;
+ * ...
+ * };
+ *
+ * Defines an instance of parameters provided to FIXTURE_SETUP() and TEST_F()
+ * as *params*. Tests of each fixture will be run for each parameter set.
+ */
+#define FIXTURE_PARAMS_ADD(fixture_name, params_name) \
+ extern FIXTURE_PARAMS(fixture_name) \
+ _##fixture_name##_##params_name##_params; \
+ static struct __fixture_params_metadata \
+ _##fixture_name##_##params_name##_object = \
+ { .name = #params_name, \
+ .data = &_##fixture_name##_##params_name##_params}; \
+ static void __attribute__((constructor)) \
+ _register_##fixture_name##_##params_name(void) \
+ { \
+ __register_fixture_params(&_##fixture_name##_fixture_object, \
+ &_##fixture_name##_##params_name##_object); \
+ } \
+ FIXTURE_PARAMS(fixture_name) _##fixture_name##_##params_name##_params =
+
/**
* TEST_F(fixture_name, test_name) - Emits test registration and helpers for
* fixture-based test cases
@@ -297,18 +356,20 @@
#define __TEST_F_IMPL(fixture_name, test_name, signal, tmout) \
static void fixture_name##_##test_name( \
struct __test_metadata *_metadata, \
- FIXTURE_DATA(fixture_name) *self); \
+ FIXTURE_DATA(fixture_name) *self, \
+ const FIXTURE_PARAMS(fixture_name) *params); \
static inline void wrapper_##fixture_name##_##test_name( \
- struct __test_metadata *_metadata) \
+ struct __test_metadata *_metadata, \
+ struct __fixture_params_metadata *p) \
{ \
/* fixture data is alloced, setup, and torn down per call. */ \
FIXTURE_DATA(fixture_name) self; \
memset(&self, 0, sizeof(FIXTURE_DATA(fixture_name))); \
- fixture_name##_setup(_metadata, &self); \
+ fixture_name##_setup(_metadata, &self, p->data); \
/* Let setup failure terminate early. */ \
if (!_metadata->passed) \
return; \
- fixture_name##_##test_name(_metadata, &self); \
+ fixture_name##_##test_name(_metadata, &self, p->data); \
fixture_name##_teardown(_metadata, &self); \
} \
static struct __test_metadata \
@@ -326,7 +387,8 @@
} \
static void fixture_name##_##test_name( \
struct __test_metadata __attribute__((unused)) *_metadata, \
- FIXTURE_DATA(fixture_name) __attribute__((unused)) *self)
+ FIXTURE_DATA(fixture_name) __attribute__((unused)) *self, \
+ const FIXTURE_PARAMS(fixture_name) __attribute__((unused)) *params)
/**
* TEST_HARNESS_MAIN - Simple wrapper to run the test harness
@@ -638,10 +700,12 @@
/* Contains all the information about a fixture */
struct __test_metadata;
+struct __fixture_params_metadata;
struct __fixture_metadata {
const char *name;
struct __test_metadata *tests;
+ struct __fixture_params_metadata *params;
struct __fixture_metadata *prev, *next;
} _fixture_global __attribute__((unused)) = {
.name = "global",
@@ -649,7 +713,6 @@ struct __fixture_metadata {
};
static struct __fixture_metadata *__fixture_list = &_fixture_global;
-static unsigned int __fixture_count;
static int __constructor_order;
#define _CONSTRUCTOR_ORDER_FORWARD 1
@@ -657,7 +720,6 @@ static int __constructor_order;
static inline void __register_fixture(struct __fixture_metadata *f)
{
- __fixture_count++;
/* Circular linked list where only prev is circular. */
if (__constructor_order == _CONSTRUCTOR_ORDER_FORWARD) {
f->next = NULL;
@@ -672,10 +734,41 @@ static inline void __register_fixture(struct __fixture_metadata *f)
}
}
+struct __fixture_params_metadata {
+ const char *name;
+ const void *data;
+ struct __fixture_params_metadata *prev, *next;
+};
+
+static inline void
+__register_fixture_params(struct __fixture_metadata *f,
+ struct __fixture_params_metadata *p)
+{
+ /* Circular linked list where only prev is circular. */
+ if (f->params == NULL) {
+ f->params = p;
+ p->next = NULL;
+ p->prev = p;
+ return;
+ }
+ if (__constructor_order == _CONSTRUCTOR_ORDER_FORWARD) {
+ p->next = NULL;
+ p->prev = f->params->prev;
+ p->prev->next = p;
+ f->params->prev = p;
+ } else {
+ p->next = f->params;
+ p->next->prev = p;
+ p->prev = p;
+ f->params = p;
+ }
+}
+
/* Contains all the information for test execution and status checking. */
struct __test_metadata {
const char *name;
- void (*fn)(struct __test_metadata *);
+ void (*fn)(struct __test_metadata *,
+ struct __fixture_params_metadata *);
struct __fixture_metadata *fixture;
int termsig;
int passed;
@@ -686,9 +779,6 @@ struct __test_metadata {
struct __test_metadata *prev, *next;
};
-/* Storage for the (global) tests to be run. */
-static unsigned int __test_count;
-
/*
* Since constructors are called in reverse order, reverse the test
* list so tests are run in source declaration order.
@@ -702,7 +792,6 @@ static inline void __register_test(struct __test_metadata *t)
{
struct __fixture_metadata *f = t->fixture;
- __test_count++;
/* Circular linked list where only prev is circular. */
if (f->tests == NULL) {
f->tests = t;
@@ -734,21 +823,26 @@ static inline int __bail(int for_realz, bool no_print, __u8 step)
}
void __run_test(struct __fixture_metadata *f,
+ struct __fixture_params_metadata *p,
struct __test_metadata *t)
{
pid_t child_pid;
int status;
+ /* reset test struct */
t->passed = 1;
t->trigger = 0;
- printf("[ RUN ] %s.%s\n", f->name, t->name);
+ t->step = 0;
+ t->no_print = 0;
+
+ printf("[ RUN ] %s%s.%s\n", f->name, p->name, t->name);
alarm(t->timeout);
child_pid = fork();
if (child_pid < 0) {
printf("ERROR SPAWNING TEST CHILD\n");
t->passed = 0;
} else if (child_pid == 0) {
- t->fn(t);
+ t->fn(t, p);
/* return the step that failed or 0 */
_exit(t->passed ? 0 : t->step);
} else {
@@ -790,31 +884,44 @@ void __run_test(struct __fixture_metadata *f,
status);
}
}
- printf("[ %4s ] %s.%s\n", (t->passed ? "OK" : "FAIL"),
- f->name, t->name);
+ printf("[ %4s ] %s%s.%s\n", (t->passed ? "OK" : "FAIL"),
+ f->name, p->name, t->name);
alarm(0);
}
static int test_harness_run(int __attribute__((unused)) argc,
char __attribute__((unused)) **argv)
{
+ struct __fixture_params_metadata no_param = { .name = "", };
+ struct __fixture_params_metadata *p;
struct __fixture_metadata *f;
struct __test_metadata *t;
int ret = 0;
+ unsigned int fixture_count = 0, test_count = 0;
unsigned int count = 0;
unsigned int pass_count = 0;
+ for (f = __fixture_list; f; f = f->next) {
+ fixture_count++;
+ for (p = f->params ?: &no_param; p; p = p->next) {
+ for (t = f->tests; t; t = t->next)
+ test_count++;
+ }
+ }
+
/* TODO(wad) add optional arguments similar to gtest. */
printf("[==========] Running %u tests from %u test cases.\n",
- __test_count, __fixture_count + 1);
+ test_count, fixture_count);
for (f = __fixture_list; f; f = f->next) {
- for (t = f->tests; t; t = t->next) {
- count++;
- __run_test(f, t);
- if (t->passed)
- pass_count++;
- else
- ret = 1;
+ for (p = f->params ?: &no_param; p; p = p->next) {
+ for (t = f->tests; t; t = t->next) {
+ count++;
+ __run_test(f, p, t);
+ if (t->passed)
+ pass_count++;
+ else
+ ret = 1;
+ }
}
}
printf("[==========] %u / %u tests passed.\n", pass_count, count);
--
2.24.1
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