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/* 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
#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*, ...);
} 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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