/* SPDX-License-Identifier: GPL-2.0 */
/*
* KUnit API providing hooks for non - test code to interact with tests .
*
* Copyright ( C ) 2020 , Google LLC .
* Author : Uriel Guajardo < urielguajardo @ google . com >
*/
#ifndef _KUNIT_TEST_BUG_H
#define _KUNIT_TEST_BUG_H
#include <linux/stddef.h> /* for NULL */
#if IS_ENABLED(CONFIG_KUNIT)
#include <linux/jump_label.h> /* For static branch */
#include <linux/sched.h>
/* Static key if KUnit is running any tests. */
DECLARE_STATIC_KEY_FALSE(kunit_running);
/* Hooks table: a table of function pointers filled in when kunit loads */
extern struct kunit_hooks_table {
__printf(3 , 4 ) void (*fail_current_test)(const char *, int , const char *, ...);
void *(*get_static_stub_address)(struct kunit *test, void *real_fn_addr);
} kunit_hooks;
/**
* kunit_get_current_test ( ) - Return a pointer to the currently running
* KUnit test .
*
* If a KUnit test is running in the current task , returns a pointer to its
* associated struct kunit . This pointer can then be passed to any KUnit
* function or assertion . If no test is running ( or a test is running in a
* different task ) , returns NULL .
*
* This function is safe to call even when KUnit is disabled . If CONFIG_KUNIT
* is not enabled , it will compile down to nothing and will return quickly no
* test is running .
*/
static inline struct kunit *kunit_get_current_test(void )
{
if (!static_branch_unlikely(&kunit_running))
return NULL;
return current->kunit_test;
}
/**
* kunit_fail_current_test ( ) - If a KUnit test is running , fail it .
*
* If a KUnit test is running in the current task , mark that test as failed .
*/
#define kunit_fail_current_test(fmt, ...) do { \
if (static_branch_unlikely(&kunit_running)) { \
/* Guaranteed to be non-NULL when kunit_running true*/ \
kunit_hooks.fail_current_test(__FILE__, __LINE__, \
fmt, ## __VA_ARGS__); \
} \
} while (0 )
#else
static inline struct kunit *kunit_get_current_test(void ) { return NULL; }
#define kunit_fail_current_test(fmt, ...) do {} while (0 )
#endif
#endif /* _KUNIT_TEST_BUG_H */
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