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// SPDX-License-Identifier: GPL-2.0
// SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
//! Assertion macros for driver self-tests.
//!
//! Self-tests run against live hardware during probe, so a failed assertion should not panic. These
//! macros log the failure on the device and fail the enclosing test by returning
//! [`EIO`](kernel::error::code::EIO) instead.
/// Like [`assert!`], but logs the failure via `dev` and fails the enclosing test instead of
/// panicking.
///
/// As with [`assert!`], a custom message with format arguments can follow the condition.
#[macro_export]
macro_rules! selftest_assert {
($dev:expr, $cond:expr $(,)?) => {
$crate::selftest_assert!($dev, $cond, "assertion failed: {}", ::core::stringify!($cond))
};
($dev:expr, $cond:expr, $($arg:tt)+) => {{
if !$cond {
::kernel::dev_err!(
$dev,
"Selftest: {}:{}: {}\n",
::core::file!(),
::core::line!(),
::kernel::prelude::fmt!($($arg)+)
);
return Err(::kernel::error::code::EIO);
}
}};
}
/// Like [`assert_eq!`], but logs the failure via `dev` and fails the enclosing test instead of
/// panicking.
///
/// As with [`assert_eq!`], a custom message with format arguments can follow the compared values.
#[macro_export]
macro_rules! selftest_assert_eq {
($dev:expr, $left:expr, $right:expr $(,)?) => {
match (&$left, &$right) {
(left, right) => $crate::selftest_assert!(
$dev,
left == right,
"assertion `{} == {}` failed: left {:?}, right {:?}",
::core::stringify!($left),
::core::stringify!($right),
left,
right
),
}
};
($dev:expr, $left:expr, $right:expr, $($arg:tt)+) => {
match (&$left, &$right) {
(left, right) => $crate::selftest_assert!(
$dev,
left == right,
"assertion `left == right` failed: {}: left {:?}, right {:?}",
::kernel::prelude::fmt!($($arg)+),
left,
right
),
}
};
}
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