/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright ( c ) 2012 The Chromium OS Authors . All rights reserved .
*
* kselftest_harness . h : simple C unit test helper .
*
* See documentation in Documentation / dev - tools / kselftest . rst
*
* API inspired by code . google . com / p / googletest
*/
/**
* DOC : example
*
* . . code - block : : c
*
* # include " . . / kselftest_harness . h "
*
* TEST ( standalone_test ) {
* do_some_stuff ;
* EXPECT_GT ( 10 , stuff ) {
* stuff_state_t state ;
* enumerate_stuff_state ( & state ) ;
* TH_LOG ( " expectation failed with state : % s " , state . msg ) ;
* }
* more_stuff ;
* ASSERT_NE ( some_stuff , NULL ) TH_LOG ( " how did it happen ? ! " ) ;
* last_stuff ;
* EXPECT_EQ ( 0 , last_stuff ) ;
* }
*
* FIXTURE ( my_fixture ) {
* mytype_t * data ;
* int awesomeness_level ;
* } ;
* FIXTURE_SETUP ( my_fixture ) {
* self - > data = mytype_new ( ) ;
* ASSERT_NE ( NULL , self - > data ) ;
* }
* FIXTURE_TEARDOWN ( my_fixture ) {
* mytype_free ( self - > data ) ;
* }
* TEST_F ( my_fixture , data_is_good ) {
* EXPECT_EQ ( 1 , is_my_data_good ( self - > data ) ) ;
* }
*
* TEST_HARNESS_MAIN
*/
#ifndef __KSELFTEST_HARNESS_H
#define __KSELFTEST_HARNESS_H
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <asm /types.h>
#include <ctype.h>
#include <errno.h>
#include <linux/unistd.h>
#include <poll.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include "kselftest.h"
#define TEST_TIMEOUT_DEFAULT 30
/* Utilities exposed to the test definitions */
#ifndef TH_LOG_STREAM
# define TH_LOG_STREAM stderr
#endif
#ifndef TH_LOG_ENABLED
# define TH_LOG_ENABLED 1
#endif
/**
* TH_LOG ( )
*
* @ fmt : format string
* @ . . . : optional arguments
*
* . . code - block : : c
*
* TH_LOG ( format , . . . )
*
* Optional debug logging function available for use in tests .
* Logging may be enabled or disabled by defining TH_LOG_ENABLED .
* E . g . , # define TH_LOG_ENABLED 1
*
* If no definition is provided , logging is enabled by default .
*/
#define TH_LOG(fmt, ...) do { \
if (TH_LOG_ENABLED) \
__TH_LOG(fmt, ## __VA_ARGS__); \
} while (0 )
/* Unconditional logger for internal use. */
#define __TH_LOG(fmt, ...) \
fprintf(TH_LOG_STREAM, "# %s:%d:%s:" fmt "\n" , \
__FILE__, __LINE__, _metadata->name, ## __VA_ARGS__)
/**
* SKIP ( )
*
* @ statement : statement to run after reporting SKIP
* @ fmt : format string
* @ . . . : optional arguments
*
* . . code - block : : c
*
* SKIP ( statement , fmt , . . . ) ;
*
* This forces a " pass " after reporting why something is being skipped
* and runs " statement " , which is usually " return " or " goto skip " .
*/
#define SKIP(statement, fmt, ...) do { \
snprintf(_metadata->results->reason, \
sizeof (_metadata->results->reason), fmt, ## __VA_ARGS__); \
if (TH_LOG_ENABLED) { \
fprintf(TH_LOG_STREAM, "# SKIP %s\n" , \
_metadata->results->reason); \
} \
_metadata->exit_code = KSFT_SKIP; \
_metadata->trigger = 0 ; \
statement; \
} while (0 )
/**
* TEST ( ) - Defines the test function and creates the registration
* stub
*
* @ test_name : test name
*
* . . code - block : : c
*
* TEST ( name ) { implementation }
*
* Defines a test by name .
* Names must be unique and tests must not be run in parallel . The
* implementation containing block is a function and scoping should be treated
* as such . Returning early may be performed with a bare " return ; " statement .
*
* EXPECT_ * and ASSERT_ * are valid in a TEST ( ) { } context .
*/
#define TEST(test_name) __TEST_IMPL(test_name, -1 )
/**
* TEST_SIGNAL ( )
*
* @ test_name : test name
* @ signal : signal number
*
* . . code - block : : c
*
* TEST_SIGNAL ( name , signal ) { implementation }
*
* Defines a test by name and the expected term signal .
* Names must be unique and tests must not be run in parallel . The
* implementation containing block is a function and scoping should be treated
* as such . Returning early may be performed with a bare " return ; " statement .
*
* EXPECT_ * and ASSERT_ * are valid in a TEST ( ) { } context .
*/
#define TEST_SIGNAL(test_name, signal) __TEST_IMPL(test_name, signal)
#define __TEST_IMPL(test_name, _signal) \
static void test_name(struct __test_metadata *_metadata); \
static void wrapper_## test_name( \
struct __test_metadata *_metadata, \
struct __fixture_variant_metadata __attribute__((unused)) *variant) \
{ \
test_name(_metadata); \
} \
static struct __test_metadata _## test_name## _object = \
{ .name = #test_name , \
.fn = &wrapper_## test_name, \
.fixture = &_fixture_global, \
.termsig = _signal, \
.timeout = TEST_TIMEOUT_DEFAULT, }; \
static void __attribute__((constructor)) _register_## test_name(void ) \
{ \
__register_test(&_## test_name## _object); \
} \
static void test_name( \
struct __test_metadata __attribute__((unused)) *_metadata)
/**
* FIXTURE_DATA ( ) - Wraps the struct name so we have one less
* argument to pass around
*
* @ datatype_name : datatype name
*
* . . code - block : : c
*
* FIXTURE_DATA ( datatype_name )
*
* Almost always , you want just FIXTURE ( ) instead ( see below ) .
* This call may be used when the type of the fixture data
* is needed . In general , this should not be needed unless
* the * self * is being passed to a helper directly .
*/
#define FIXTURE_DATA(datatype_name) struct _test_data_## datatype_name
/**
* FIXTURE ( ) - Called once per fixture to setup the data and
* register
*
* @ fixture_name : fixture name
*
* . . code - block : : c
*
* FIXTURE ( fixture_name ) {
* type property1 ;
* . . .
* } ;
*
* Defines the data provided to TEST_F ( ) - defined tests as * self * . It should be
* populated and cleaned up using FIXTURE_SETUP ( ) and FIXTURE_TEARDOWN ( ) .
*/
#define FIXTURE(fixture_name) \
FIXTURE_VARIANT(fixture_name); \
static struct __fixture_metadata _## fixture_name## _fixture_object = \
{ .name = #fixture_name , }; \
static void __attribute__((constructor)) \
_register_## fixture_name## _data(void ) \
{ \
__register_fixture(&_## fixture_name## _fixture_object); \
} \
FIXTURE_DATA(fixture_name)
/**
* FIXTURE_SETUP ( ) - Prepares the setup function for the fixture .
* * _ metadata * is included so that EXPECT_ * , ASSERT_ * etc . work correctly .
*
* @ fixture_name : fixture name
*
* . . code - block : : c
*
* FIXTURE_SETUP ( fixture_name ) { implementation }
*
* Populates the required " setup " function for a fixture . An instance of the
* datatype defined with FIXTURE_DATA ( ) will be exposed as * self * for the
* implementation .
*
* ASSERT_ * are valid for use in this context and will prempt the execution
* of any dependent fixture tests .
*
* A bare " return ; " statement may be used to return early .
*/
#define FIXTURE_SETUP(fixture_name) \
static void fixture_name## _setup( \
struct __test_metadata __attribute__((unused)) *_metadata, \
FIXTURE_DATA(fixture_name) __attribute__((unused)) *self, \
const FIXTURE_VARIANT(fixture_name) \
__attribute__((unused)) *variant)
/**
* FIXTURE_TEARDOWN ( )
* * _ metadata * is included so that EXPECT_ * , ASSERT_ * etc . work correctly .
*
* @ fixture_name : fixture name
*
* . . code - block : : c
*
* FIXTURE_TEARDOWN ( fixture_name ) { implementation }
*
* Populates the required " teardown " function for a fixture . An instance of the
* datatype defined with FIXTURE_DATA ( ) will be exposed as * self * for the
* implementation to clean up .
*
* A bare " return ; " statement may be used to return early .
*/
#define FIXTURE_TEARDOWN(fixture_name) \
static const bool fixture_name## _teardown_parent; \
__FIXTURE_TEARDOWN(fixture_name)
/**
* FIXTURE_TEARDOWN_PARENT ( )
* * _ metadata * is included so that EXPECT_ * , ASSERT_ * etc . work correctly .
*
* @ fixture_name : fixture name
*
* . . code - block : : c
*
* FIXTURE_TEARDOWN_PARENT ( fixture_name ) { implementation }
*
* Same as FIXTURE_TEARDOWN ( ) but run this code in a parent process . This
* enables the test process to drop its privileges without impacting the
* related FIXTURE_TEARDOWN_PARENT ( ) ( e . g . to remove files from a directory
* where write access was dropped ) .
*
* To make it possible for the parent process to use * self * , share ( MAP_SHARED )
* the fixture data between all forked processes .
*/
#define FIXTURE_TEARDOWN_PARENT(fixture_name) \
static const bool fixture_name## _teardown_parent = true ; \
__FIXTURE_TEARDOWN(fixture_name)
#define __FIXTURE_TEARDOWN(fixture_name) \
static void fixture_name## _teardown( \
struct __test_metadata __attribute__((unused)) *_metadata, \
FIXTURE_DATA(fixture_name) __attribute__((unused)) *self, \
const FIXTURE_VARIANT(fixture_name) \
__attribute__((unused)) *variant)
/**
* FIXTURE_VARIANT ( ) - Optionally called once per fixture
* to declare fixture variant
*
* @ fixture_name : fixture name
*
* . . code - block : : c
*
* FIXTURE_VARIANT ( fixture_name ) {
* type property1 ;
* . . .
* } ;
*
* Defines type of constant parameters provided to FIXTURE_SETUP ( ) , TEST_F ( ) and
* FIXTURE_TEARDOWN as * variant * . Variants allow the same tests to be run with
* different arguments .
*/
#define FIXTURE_VARIANT(fixture_name) struct _fixture_variant_## fixture_name
/**
* FIXTURE_VARIANT_ADD ( ) - Called once per fixture
* variant to setup and register the data
*
* @ fixture_name : fixture name
* @ variant_name : name of the parameter set
*
* . . code - block : : c
*
* FIXTURE_VARIANT_ADD ( fixture_name , variant_name ) {
* . property1 = val1 ,
* . . .
* } ;
*
* Defines a variant of the test fixture , provided to FIXTURE_SETUP ( ) and
* TEST_F ( ) as * variant * . Tests of each fixture will be run once for each
* variant .
*/
#define FIXTURE_VARIANT_ADD(fixture_name, variant_name) \
extern const FIXTURE_VARIANT(fixture_name) \
_## fixture_name## _## variant_name## _variant; \
static struct __fixture_variant_metadata \
_## fixture_name## _## variant_name## _object = \
{ .name = #variant_name , \
.data = &_## fixture_name## _## variant_name## _variant}; \
static void __attribute__((constructor)) \
_register_## fixture_name## _## variant_name(void ) \
{ \
__register_fixture_variant(&_## fixture_name## _fixture_object, \
&_## fixture_name## _## variant_name## _object); \
} \
const FIXTURE_VARIANT(fixture_name) \
_## fixture_name## _## variant_name## _variant =
/**
* TEST_F ( ) - Emits test registration and helpers for
* fixture - based test cases
*
* @ fixture_name : fixture name
* @ test_name : test name
*
* . . code - block : : c
*
* TEST_F ( fixture , name ) { implementation }
*
* Defines a test that depends on a fixture ( e . g . , is part of a test case ) .
* Very similar to TEST ( ) except that * self * is the setup instance of fixture ' s
* datatype exposed for use by the implementation .
*
* The _ metadata object is shared ( MAP_SHARED ) with all the potential forked
* processes , which enables them to use EXCEPT_ * ( ) and ASSERT_ * ( ) .
*
* The * self * object is only shared with the potential forked processes if
* FIXTURE_TEARDOWN_PARENT ( ) is used instead of FIXTURE_TEARDOWN ( ) .
*/
#define TEST_F(fixture_name, test_name) \
__TEST_F_IMPL(fixture_name, test_name, -1 , TEST_TIMEOUT_DEFAULT)
#define TEST_F_SIGNAL(fixture_name, test_name, signal) \
__TEST_F_IMPL(fixture_name, test_name, signal, TEST_TIMEOUT_DEFAULT)
#define TEST_F_TIMEOUT(fixture_name, test_name, timeout) \
__TEST_F_IMPL(fixture_name, test_name, -1 , timeout)
#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, \
const FIXTURE_VARIANT(fixture_name) *variant); \
static void wrapper_## fixture_name## _## test_name( \
struct __test_metadata *_metadata, \
struct __fixture_variant_metadata *variant) \
{ \
/* fixture data is alloced, setup, and torn down per call. */ \
FIXTURE_DATA(fixture_name) self_private, *self = NULL; \
pid_t child = 1 ; \
int status = 0 ; \
/* Makes sure there is only one teardown, even when child forks again. */ \
_metadata->no_teardown = mmap(NULL, sizeof (*_metadata->no_teardown), \
PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1 , 0 ); \
*_metadata->no_teardown = true ; \
if (sizeof (*self) > 0 ) { \
if (fixture_name## _teardown_parent) { \
self = mmap(NULL, sizeof (*self), PROT_READ | PROT_WRITE, \
MAP_SHARED | MAP_ANONYMOUS, -1 , 0 ); \
} else { \
memset(&self_private, 0 , sizeof (self_private)); \
self = &self_private; \
} \
} \
_metadata->variant = variant->data; \
_metadata->self = self; \
/* _metadata and potentially self are shared with all forks. */ \
child = fork(); \
if (child == 0 ) { \
fixture_name## _setup(_metadata, self, variant->data); \
/* Let setup failure terminate early. */ \
if (_metadata->exit_code) \
_exit (0 ); \
*_metadata->no_teardown = false ; \
fixture_name## _## test_name(_metadata, self, variant->data); \
_metadata->teardown_fn(false , _metadata, self, variant->data); \
_exit (0 ); \
} else if (child < 0 || child != waitpid(child, &status, 0 )) { \
ksft_print_msg("ERROR SPAWNING TEST GRANDCHILD\n" ); \
_metadata->exit_code = KSFT_FAIL; \
} \
_metadata->teardown_fn(true , _metadata, self, variant->data); \
munmap(_metadata->no_teardown, sizeof (*_metadata->no_teardown)); \
_metadata->no_teardown = NULL; \
if (self && fixture_name## _teardown_parent) \
munmap(self, sizeof (*self)); \
if (WIFEXITED(status)) { \
if (WEXITSTATUS(status)) \
_metadata->exit_code = WEXITSTATUS(status); \
} else if (WIFSIGNALED(status)) { \
/* Forward signal to __wait_for_test(). */ \
kill(getpid(), WTERMSIG(status)); \
} \
} \
static void wrapper_## fixture_name## _## test_name## _teardown( \
bool in_parent, struct __test_metadata *_metadata, \
void *self, const void *variant) \
{ \
if (fixture_name## _teardown_parent == in_parent && \
!__atomic_test_and_set(_metadata->no_teardown, __ATOMIC_RELAXED)) \
fixture_name## _teardown(_metadata, self, variant); \
} \
static struct __test_metadata *_## fixture_name## _## test_name## _object; \
static void __attribute__((constructor)) \
_register_## fixture_name## _## test_name(void ) \
{ \
struct __test_metadata *object = mmap(NULL, sizeof (*object), \
PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1 , 0 ); \
object->name = #test_name ; \
object->fn = &wrapper_## fixture_name## _## test_name; \
object->fixture = &_## fixture_name## _fixture_object; \
object->teardown_fn = &wrapper_## fixture_name## _## test_name## _teardown; \
object->termsig = signal; \
object->timeout = tmout; \
_## fixture_name## _## test_name## _object = object; \
__register_test(object); \
} \
static void fixture_name## _## test_name( \
struct __test_metadata __attribute__((unused)) *_metadata, \
FIXTURE_DATA(fixture_name) __attribute__((unused)) *self, \
const FIXTURE_VARIANT(fixture_name) \
__attribute__((unused)) *variant)
/**
* TEST_HARNESS_MAIN - Simple wrapper to run the test harness
*
* . . code - block : : c
*
* TEST_HARNESS_MAIN
*
* Use once to append a main ( ) to the test file .
*/
#define TEST_HARNESS_MAIN \
int main(int argc, char **argv) { \
return test_harness_run(argc, argv); \
}
/**
* DOC : operators
*
* Operators for use in TEST ( ) and TEST_F ( ) .
* ASSERT_ * calls will stop test execution immediately .
* EXPECT_ * calls will emit a failure warning , note it , and continue .
*/
/**
* ASSERT_EQ ( )
*
* @ expected : expected value
* @ seen : measured value
*
* ASSERT_EQ ( expected , measured ) : expected = = measured
*/
#define ASSERT_EQ(expected, seen) \
__EXPECT(expected, #expected , seen, #seen , ==, 1 )
/**
* ASSERT_NE ( )
*
* @ expected : expected value
* @ seen : measured value
*
* ASSERT_NE ( expected , measured ) : expected ! = measured
*/
#define ASSERT_NE(expected, seen) \
__EXPECT(expected, #expected , seen, #seen , !=, 1 )
/**
* ASSERT_LT ( )
*
* @ expected : expected value
* @ seen : measured value
*
* ASSERT_LT ( expected , measured ) : expected < measured
*/
#define ASSERT_LT(expected, seen) \
__EXPECT(expected, #expected , seen, #seen , <, 1 )
/**
* ASSERT_LE ( )
*
* @ expected : expected value
* @ seen : measured value
*
* ASSERT_LE ( expected , measured ) : expected < = measured
*/
#define ASSERT_LE(expected, seen) \
__EXPECT(expected, #expected , seen, #seen , <=, 1 )
/**
* ASSERT_GT ( )
*
* @ expected : expected value
* @ seen : measured value
*
* ASSERT_GT ( expected , measured ) : expected > measured
*/
#define ASSERT_GT(expected, seen) \
__EXPECT(expected, #expected , seen, #seen , >, 1 )
/**
* ASSERT_GE ( )
*
* @ expected : expected value
* @ seen : measured value
*
* ASSERT_GE ( expected , measured ) : expected > = measured
*/
#define ASSERT_GE(expected, seen) \
__EXPECT(expected, #expected , seen, #seen , >=, 1 )
/**
* ASSERT_NULL ( )
*
* @ seen : measured value
*
* ASSERT_NULL ( measured ) : NULL = = measured
*/
#define ASSERT_NULL(seen) \
__EXPECT(NULL, "NULL" , seen, #seen , ==, 1 )
/**
* ASSERT_TRUE ( )
*
* @ seen : measured value
*
* ASSERT_TRUE ( measured ) : measured ! = 0
*/
#define ASSERT_TRUE(seen) \
__EXPECT(0 , "0" , seen, #seen , !=, 1 )
/**
* ASSERT_FALSE ( )
*
* @ seen : measured value
*
* ASSERT_FALSE ( measured ) : measured = = 0
*/
#define ASSERT_FALSE(seen) \
__EXPECT(0 , "0" , seen, #seen , ==, 1 )
/**
* ASSERT_STREQ ( )
*
* @ expected : expected value
* @ seen : measured value
*
* ASSERT_STREQ ( expected , measured ) : ! strcmp ( expected , measured )
*/
#define ASSERT_STREQ(expected, seen) \
__EXPECT_STR(expected, seen, ==, 1 )
/**
* ASSERT_STRNE ( )
*
* @ expected : expected value
* @ seen : measured value
*
* ASSERT_STRNE ( expected , measured ) : strcmp ( expected , measured )
*/
#define ASSERT_STRNE(expected, seen) \
__EXPECT_STR(expected, seen, !=, 1 )
/**
* EXPECT_EQ ( )
*
* @ expected : expected value
* @ seen : measured value
*
* EXPECT_EQ ( expected , measured ) : expected = = measured
*/
#define EXPECT_EQ(expected, seen) \
__EXPECT(expected, #expected , seen, #seen , ==, 0 )
/**
* EXPECT_NE ( )
*
* @ expected : expected value
* @ seen : measured value
*
* EXPECT_NE ( expected , measured ) : expected ! = measured
*/
#define EXPECT_NE(expected, seen) \
__EXPECT(expected, #expected , seen, #seen , !=, 0 )
/**
* EXPECT_LT ( )
*
* @ expected : expected value
* @ seen : measured value
*
* EXPECT_LT ( expected , measured ) : expected < measured
*/
#define EXPECT_LT(expected, seen) \
__EXPECT(expected, #expected , seen, #seen , <, 0 )
/**
* EXPECT_LE ( )
*
* @ expected : expected value
* @ seen : measured value
*
* EXPECT_LE ( expected , measured ) : expected < = measured
*/
#define EXPECT_LE(expected, seen) \
__EXPECT(expected, #expected , seen, #seen , <=, 0 )
/**
* EXPECT_GT ( )
*
* @ expected : expected value
* @ seen : measured value
*
* EXPECT_GT ( expected , measured ) : expected > measured
*/
#define EXPECT_GT(expected, seen) \
__EXPECT(expected, #expected , seen, #seen , >, 0 )
/**
* EXPECT_GE ( )
*
* @ expected : expected value
* @ seen : measured value
*
* EXPECT_GE ( expected , measured ) : expected > = measured
*/
#define EXPECT_GE(expected, seen) \
__EXPECT(expected, #expected , seen, #seen , >=, 0 )
/**
* EXPECT_NULL ( )
*
* @ seen : measured value
*
* EXPECT_NULL ( measured ) : NULL = = measured
*/
#define EXPECT_NULL(seen) \
__EXPECT(NULL, "NULL" , seen, #seen , ==, 0 )
/**
* EXPECT_TRUE ( )
*
* @ seen : measured value
*
* EXPECT_TRUE ( measured ) : 0 ! = measured
*/
#define EXPECT_TRUE(seen) \
__EXPECT(0 , "0" , seen, #seen , !=, 0 )
/**
* EXPECT_FALSE ( )
*
* @ seen : measured value
*
* EXPECT_FALSE ( measured ) : 0 = = measured
*/
#define EXPECT_FALSE(seen) \
__EXPECT(0 , "0" , seen, #seen , ==, 0 )
/**
* EXPECT_STREQ ( )
*
* @ expected : expected value
* @ seen : measured value
*
* EXPECT_STREQ ( expected , measured ) : ! strcmp ( expected , measured )
*/
#define EXPECT_STREQ(expected, seen) \
__EXPECT_STR(expected, seen, ==, 0 )
/**
* EXPECT_STRNE ( )
*
* @ expected : expected value
* @ seen : measured value
*
* EXPECT_STRNE ( expected , measured ) : strcmp ( expected , measured )
*/
#define EXPECT_STRNE(expected, seen) \
__EXPECT_STR(expected, seen, !=, 0 )
#ifndef ARRAY_SIZE
#define ARRAY_SIZE(a) (sizeof (a) / sizeof (a[0 ]))
#endif
/* Support an optional handler after and ASSERT_* or EXPECT_*. The approach is
* not thread - safe , but it should be fine in most sane test scenarios .
*
* Using _ _ bail ( ) , which optionally abort ( ) s , is the easiest way to early
* return while still providing an optional block to the API consumer .
*/
#define OPTIONAL_HANDLER(_assert) \
for (; _metadata->trigger; _metadata->trigger = \
__bail(_assert, _metadata))
#define is_signed_var(var) (!!(((__typeof__(var))(-1 )) < (__typeof__(var))1 ))
#define __EXPECT(_expected, _expected_str, _seen, _seen_str, _t, _assert) do { \
/* Avoid multiple evaluation of the cases */ \
__typeof__(_expected) __exp = (_expected); \
__typeof__(_seen) __seen = (_seen); \
if (!(__exp _t __seen)) { \
/* Report with actual signedness to avoid weird output. */ \
switch (is_signed_var(__exp) * 2 + is_signed_var(__seen)) { \
case 0 : { \
uintmax_t __exp_print = (uintmax_t)__exp; \
uintmax_t __seen_print = (uintmax_t)__seen; \
__TH_LOG("Expected %s (%ju) %s %s (%ju)" , \
_expected_str, __exp_print, #_ t, \
_seen_str, __seen_print); \
break ; \
} \
case 1 : { \
uintmax_t __exp_print = (uintmax_t)__exp; \
intmax_t __seen_print = (intmax_t)__seen; \
__TH_LOG("Expected %s (%ju) %s %s (%jd)" , \
_expected_str, __exp_print, #_ t, \
_seen_str, __seen_print); \
break ; \
} \
case 2 : { \
intmax_t __exp_print = (intmax_t)__exp; \
uintmax_t __seen_print = (uintmax_t)__seen; \
__TH_LOG("Expected %s (%jd) %s %s (%ju)" , \
_expected_str, __exp_print, #_ t, \
_seen_str, __seen_print); \
break ; \
} \
case 3 : { \
intmax_t __exp_print = (intmax_t)__exp; \
intmax_t __seen_print = (intmax_t)__seen; \
__TH_LOG("Expected %s (%jd) %s %s (%jd)" , \
_expected_str, __exp_print, #_ t, \
_seen_str, __seen_print); \
break ; \
} \
} \
_metadata->exit_code = KSFT_FAIL; \
/* Ensure the optional handler is triggered */ \
_metadata->trigger = 1 ; \
} \
} while (0 ); OPTIONAL_HANDLER(_assert)
#define __EXPECT_STR(_expected, _seen, _t, _assert) do { \
const char *__exp = (_expected); \
const char *__seen = (_seen); \
if (!(strcmp(__exp, __seen) _t 0 )) { \
__TH_LOG("Expected '%s' %s '%s'." , __exp, #_ t, __seen); \
_metadata->exit_code = KSFT_FAIL; \
_metadata->trigger = 1 ; \
} \
} while (0 ); OPTIONAL_HANDLER(_assert)
/* List helpers */
#define __LIST_APPEND(head, item) \
{ \
/* Circular linked list where only prev is circular. */ \
if (head == NULL) { \
head = item; \
item->next = NULL; \
item->prev = item; \
return ; \
} \
if (__constructor_order_forward) { \
item->next = NULL; \
item->prev = head->prev; \
item->prev->next = item; \
head->prev = item; \
} else { \
item->next = head; \
item->next->prev = item; \
item->prev = item; \
head = item; \
} \
}
struct __test_results {
char reason[1024 ]; /* Reason for test result */
};
struct __test_metadata;
struct __fixture_variant_metadata;
/* Contains all the information about a fixture. */
struct __fixture_metadata {
const char *name;
struct __test_metadata *tests;
struct __fixture_variant_metadata *variant;
struct __fixture_metadata *prev, *next;
} _fixture_global __attribute__((unused)) = {
.name = "global" ,
.prev = &_fixture_global,
};
struct __test_xfail {
struct __fixture_metadata *fixture;
struct __fixture_variant_metadata *variant;
struct __test_metadata *test;
struct __test_xfail *prev, *next;
};
/**
* XFAIL_ADD ( ) - mark variant + test case combination as expected to fail
* @ fixture_name : name of the fixture
* @ variant_name : name of the variant
* @ test_name : name of the test case
*
* Mark a combination of variant + test case for a given fixture as expected
* to fail . Tests marked this way will report XPASS / XFAIL return codes ,
* instead of PASS / FAIL , and use respective counters .
*/
#define XFAIL_ADD(fixture_name, variant_name, test_name) \
static struct __test_xfail \
_## fixture_name## _## variant_name## _## test_name## _xfail = \
{ \
.fixture = &_## fixture_name## _fixture_object, \
.variant = &_## fixture_name## _## variant_name## _object, \
}; \
static void __attribute__((constructor)) \
_register_## fixture_name## _## variant_name## _## test_name## _xfail(void ) \
{ \
_## fixture_name## _## variant_name## _## test_name## _xfail.test = \
_## fixture_name## _## test_name## _object; \
__register_xfail(&_## fixture_name## _## variant_name## _## test_name## _xfail); \
}
static struct __fixture_metadata *__fixture_list = &_fixture_global;
static bool __constructor_order_forward;
static inline void __register_fixture(struct __fixture_metadata *f)
{
__LIST_APPEND(__fixture_list, f);
}
struct __fixture_variant_metadata {
const char *name;
const void *data;
struct __test_xfail *xfails;
struct __fixture_variant_metadata *prev, *next;
};
static inline void
__register_fixture_variant(struct __fixture_metadata *f,
struct __fixture_variant_metadata *variant)
{
__LIST_APPEND(f->variant, variant);
}
/* Contains all the information for test execution and status checking. */
struct __test_metadata {
const char *name;
void (*fn)(struct __test_metadata *,
struct __fixture_variant_metadata *);
pid_t pid; /* pid of test when being run */
struct __fixture_metadata *fixture;
void (*teardown_fn)(bool in_parent, struct __test_metadata *_metadata,
void *self, const void *variant);
int termsig;
int exit_code;
int trigger; /* extra handler after the evaluation */
int timeout; /* seconds to wait for test timeout */
bool aborted; /* stopped test due to failed ASSERT */
bool *no_teardown; /* fixture needs teardown */
void *self;
const void *variant;
struct __test_results *results;
struct __test_metadata *prev, *next;
};
static inline bool __test_passed(struct __test_metadata *metadata)
{
return metadata->exit_code != KSFT_FAIL &&
metadata->exit_code <= KSFT_SKIP;
}
/*
* Since constructors are called in reverse order , reverse the test
* list so tests are run in source declaration order .
* https : //gcc.gnu.org/onlinedocs/gccint/Initialization.html
* However , it seems not all toolchains do this correctly , so use
* _ _ constructor_order_foward to detect which direction is called first
* and adjust list building logic to get things running in the right
* direction .
*/
static inline void __register_test(struct __test_metadata *t)
{
__LIST_APPEND(t->fixture->tests, t);
}
static inline void __register_xfail(struct __test_xfail *xf)
{
__LIST_APPEND(xf->variant->xfails, xf);
}
static inline int __bail(int for_realz, struct __test_metadata *t)
{
/* if this is ASSERT, return immediately. */
if (for_realz) {
if (t->teardown_fn)
t->teardown_fn(false , t, t->self, t->variant);
abort();
}
/* otherwise, end the for loop and continue. */
return 0 ;
}
static void __wait_for_test(struct __test_metadata *t)
{
/*
* Sets status so that WIFEXITED ( status ) returns true and
* WEXITSTATUS ( status ) returns KSFT_FAIL . This safe default value
* should never be evaluated because of the waitpid ( 2 ) check and
* timeout handling .
*/
int status = KSFT_FAIL << 8 ;
struct pollfd poll_child;
int ret, child, childfd;
bool timed_out = false ;
childfd = syscall(__NR_pidfd_open, t->pid, 0 );
if (childfd == -1 ) {
t->exit_code = KSFT_FAIL;
fprintf(TH_LOG_STREAM,
"# %s: unable to open pidfd\n" ,
t->name);
return ;
}
poll_child.fd = childfd;
poll_child.events = POLLIN;
ret = poll(&poll_child, 1 , t->timeout * 1000 );
if (ret == -1 ) {
t->exit_code = KSFT_FAIL;
fprintf(TH_LOG_STREAM,
"# %s: unable to wait on child pidfd\n" ,
t->name);
return ;
} else if (ret == 0 ) {
timed_out = true ;
/* signal process group */
kill(-(t->pid), SIGKILL);
}
child = waitpid(t->pid, &status, WNOHANG);
if (child == -1 && errno != EINTR) {
t->exit_code = KSFT_FAIL;
fprintf(TH_LOG_STREAM,
"# %s: Failed to wait for PID %d (errno: %d)\n" ,
t->name, t->pid, errno);
return ;
}
if (timed_out) {
t->exit_code = KSFT_FAIL;
fprintf(TH_LOG_STREAM,
"# %s: Test terminated by timeout\n" , t->name);
} else if (WIFEXITED(status)) {
if (WEXITSTATUS(status) == KSFT_SKIP ||
WEXITSTATUS(status) == KSFT_XPASS ||
WEXITSTATUS(status) == KSFT_XFAIL) {
t->exit_code = WEXITSTATUS(status);
} else if (t->termsig != -1 ) {
t->exit_code = KSFT_FAIL;
fprintf(TH_LOG_STREAM,
"# %s: Test exited normally instead of by signal (code: %d)\n" ,
t->name,
WEXITSTATUS(status));
} else {
switch (WEXITSTATUS(status)) {
/* Success */
case KSFT_PASS:
t->exit_code = KSFT_PASS;
break ;
/* Failure */
default :
t->exit_code = KSFT_FAIL;
fprintf(TH_LOG_STREAM,
"# %s: Test failed\n" ,
t->name);
}
}
} else if (WIFSIGNALED(status)) {
t->exit_code = KSFT_FAIL;
if (WTERMSIG(status) == SIGABRT) {
fprintf(TH_LOG_STREAM,
"# %s: Test terminated by assertion\n" ,
t->name);
} else if (WTERMSIG(status) == t->termsig) {
t->exit_code = KSFT_PASS;
} else {
fprintf(TH_LOG_STREAM,
"# %s: Test terminated unexpectedly by signal %d\n" ,
t->name,
WTERMSIG(status));
}
} else {
t->exit_code = KSFT_FAIL;
fprintf(TH_LOG_STREAM,
"# %s: Test ended in some other way [%u]\n" ,
t->name,
status);
}
}
static void test_harness_list_tests(void )
{
struct __fixture_variant_metadata *v;
struct __fixture_metadata *f;
struct __test_metadata *t;
for (f = __fixture_list; f; f = f->next) {
v = f->variant;
t = f->tests;
if (f == __fixture_list)
fprintf(stderr, "%-20s %-25s %s\n" ,
"# FIXTURE" , "VARIANT" , "TEST" );
else
fprintf(stderr, "--------------------------------------------------------------------------------\n" );
do {
fprintf(stderr, "%-20s %-25s %s\n" ,
t == f->tests ? f->name : "" ,
v ? v->name : "" ,
t ? t->name : "" );
v = v ? v->next : NULL;
t = t ? t->next : NULL;
} while (v || t);
}
}
static int test_harness_argv_check(int argc, char **argv)
{
int opt;
while ((opt = getopt(argc, argv, "hlF:f:V:v:t:T:r:" )) != -1 ) {
switch (opt) {
case 'f' :
case 'F' :
case 'v' :
case 'V' :
case 't' :
case 'T' :
case 'r' :
break ;
case 'l' :
test_harness_list_tests();
return KSFT_SKIP;
case 'h' :
default :
fprintf(stderr,
"Usage: %s [-h|-l] [-t|-T|-v|-V|-f|-F|-r name]\n"
"\t-h print help\n"
"\t-l list all tests\n"
"\n"
"\t-t name include test\n"
"\t-T name exclude test\n"
"\t-v name include variant\n"
"\t-V name exclude variant\n"
"\t-f name include fixture\n"
"\t-F name exclude fixture\n"
"\t-r name run specified test\n"
"\n"
"Test filter options can be specified "
"multiple times. The filtering stops\n"
"at the first match. For example to "
"include all tests from variant 'bla'\n"
"but not test 'foo' specify '-T foo -v bla'.\n"
"" , argv[0 ]);
return opt == 'h' ? KSFT_SKIP : KSFT_FAIL;
}
}
return KSFT_PASS;
}
static bool test_enabled(int argc, char **argv,
struct __fixture_metadata *f,
struct __fixture_variant_metadata *v,
struct __test_metadata *t)
{
unsigned int flen = 0 , vlen = 0 , tlen = 0 ;
bool has_positive = false ;
int opt;
optind = 1 ;
while ((opt = getopt(argc, argv, "F:f:V:v:t:T:r:" )) != -1 ) {
has_positive |= islower(opt);
switch (tolower(opt)) {
case 't' :
if (!strcmp(t->name, optarg))
return islower(opt);
break ;
case 'f' :
if (!strcmp(f->name, optarg))
return islower(opt);
break ;
case 'v' :
if (!strcmp(v->name, optarg))
return islower(opt);
break ;
case 'r' :
if (!tlen) {
flen = strlen(f->name);
vlen = strlen(v->name);
tlen = strlen(t->name);
}
if (strlen(optarg) == flen + 1 + vlen + !!vlen + tlen &&
!strncmp(f->name, &optarg[0 ], flen) &&
!strncmp(v->name, &optarg[flen + 1 ], vlen) &&
!strncmp(t->name, &optarg[flen + 1 + vlen + !!vlen], tlen))
return true ;
break ;
}
}
/*
* If there are no positive tests then we assume user just wants
* exclusions and everything else is a pass .
*/
return !has_positive;
}
static void __run_test(struct __fixture_metadata *f,
struct __fixture_variant_metadata *variant,
struct __test_metadata *t)
{
struct __test_xfail *xfail;
char test_name[1024 ];
const char *diagnostic;
int child;
/* reset test struct */
t->exit_code = KSFT_PASS;
t->trigger = 0 ;
t->aborted = false ;
t->no_teardown = NULL;
memset(t->results->reason, 0 , sizeof (t->results->reason));
snprintf(test_name, sizeof (test_name), "%s%s%s.%s" ,
f->name, variant->name[0 ] ? "." : "" , variant->name, t->name);
ksft_print_msg(" RUN %s ...\n" , test_name);
/* Make sure output buffers are flushed before fork */
fflush(stdout);
fflush(stderr);
child = fork();
if (child < 0 ) {
ksft_print_msg("ERROR SPAWNING TEST CHILD\n" );
t->exit_code = KSFT_FAIL;
} else if (child == 0 ) {
setpgrp();
t->fn(t, variant);
_exit (t->exit_code);
} else {
t->pid = child;
__wait_for_test(t);
}
ksft_print_msg(" %4s %s\n" ,
__test_passed(t) ? "OK" : "FAIL" , test_name);
/* Check if we're expecting this test to fail */
for (xfail = variant->xfails; xfail; xfail = xfail->next)
if (xfail->test == t)
break ;
if (xfail)
t->exit_code = __test_passed(t) ? KSFT_XPASS : KSFT_XFAIL;
if (t->results->reason[0 ])
diagnostic = t->results->reason;
else if (t->exit_code == KSFT_PASS || t->exit_code == KSFT_FAIL)
diagnostic = NULL;
else
diagnostic = "unknown" ;
ksft_test_result_code(t->exit_code, test_name,
diagnostic ? "%s" : NULL, diagnostic);
}
static int test_harness_run(int argc, char **argv)
{
struct __fixture_variant_metadata no_variant = { .name = "" , };
struct __fixture_variant_metadata *v;
struct __fixture_metadata *f;
struct __test_results *results;
struct __test_metadata *t;
int ret;
unsigned int case_count = 0 , test_count = 0 ;
unsigned int count = 0 ;
unsigned int pass_count = 0 ;
ret = test_harness_argv_check(argc, argv);
if (ret != KSFT_PASS)
return ret;
for (f = __fixture_list; f; f = f->next) {
for (v = f->variant ?: &no_variant; v; v = v->next) {
unsigned int old_tests = test_count;
for (t = f->tests; t; t = t->next)
if (test_enabled(argc, argv, f, v, t))
test_count++;
if (old_tests != test_count)
case_count++;
}
}
results = mmap(NULL, sizeof (*results), PROT_READ | PROT_WRITE,
MAP_SHARED | MAP_ANONYMOUS, -1 , 0 );
ksft_print_header();
ksft_set_plan(test_count);
ksft_print_msg("Starting %u tests from %u test cases.\n" ,
test_count, case_count);
for (f = __fixture_list; f; f = f->next) {
for (v = f->variant ?: &no_variant; v; v = v->next) {
for (t = f->tests; t; t = t->next) {
if (!test_enabled(argc, argv, f, v, t))
continue ;
count++;
t->results = results;
__run_test(f, v, t);
t->results = NULL;
if (__test_passed(t))
pass_count++;
else
ret = 1 ;
}
}
}
munmap(results, sizeof (*results));
ksft_print_msg("%s: %u / %u tests passed.\n" , ret ? "FAILED" : "PASSED" ,
pass_count, count);
ksft_exit(ret == 0 );
/* unreachable */
return KSFT_FAIL;
}
static void __attribute__((constructor)) __constructor_order_first(void )
{
__constructor_order_forward = true ;
}
#endif /* __KSELFTEST_HARNESS_H */
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