linux-kernel - [PATCH 0/3] rust: kunit: Support KUnit tests with a user-space like syntax

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20230720-rustbind-v1-0-c80db349e3b5@google.com>
Date:   Thu, 20 Jul 2023 14:38:51 +0800
From:   David Gow <davidgow@...gle.com>
To:     Brendan Higgins <brendan.higgins@...ux.dev>,
        Miguel Ojeda <ojeda@...nel.org>,
        Alex Gaynor <alex.gaynor@...il.com>,
        Wedson Almeida Filho <wedsonaf@...il.com>,
        Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
        Benno Lossin <benno.lossin@...ton.me>
Cc:     David Gow <davidgow@...gle.com>,
        "José Expósito" <jose.exposito89@...il.com>,
        "Björn Roy Baron" <bjorn3_gh@...tonmail.com>,
        linux-kselftest@...r.kernel.org, kunit-dev@...glegroups.com,
        rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/3] rust: kunit: Support KUnit tests with a user-space like syntax

This series was originally written by José Expósito, and can be found
here:
https://github.com/Rust-for-Linux/linux/pull/950

Add support for writing KUnit tests in Rust. While Rust doctests are
already converted to KUnit tests and run, they're really better suited
for examples, rather than as first-class unit tests.

This series implements a series of direct Rust bindings for KUnit tests,
as well as a new macro which allows KUnit tests to be written using a
close variant of normal Rust unit test syntax. The only change required
is replacing '#[cfg(test)]' with '#[kunit_tests(kunit_test_suite_name)]'

An example test would look like:
	#[kunit_tests(rust_kernel_hid_driver)]
	mod tests {
	    use super::*;
	    use crate::{c_str, driver, hid, prelude::*};
	    use core::ptr;

	    struct SimpleTestDriver;
	    impl Driver for SimpleTestDriver {
	        type Data = ();
	    }

	    #[test]
	    fn rust_test_hid_driver_adapter() {
	        let mut hid = bindings::hid_driver::default();
	        let name = c_str!("SimpleTestDriver");
	        static MODULE: ThisModule = unsafe { ThisModule::from_ptr(ptr::null_mut()) };

        	let res = unsafe {
	            <hid::Adapter<SimpleTestDriver> as driver::DriverOps>::register(&mut hid, name, &MODULE)
	        };
	        assert_eq!(res, Err(ENODEV)); // The mock returns -19
	    }
	}

Changes since the GitHub PR:
- Rebased on top of kselftest/kunit
- Add const_mut_refs feature
  This may conflict with https://lore.kernel.org/lkml/20230503090708.2524310-6-nmi@metaspace.dk/
- Add rust/macros/kunit.rs to the KUnit MAINTAINERS entry

Signed-off-by: David Gow <davidgow@...gle.com>
---
José Expósito (3):
      rust: kunit: add KUnit case and suite macros
      rust: macros: add macro to easily run KUnit tests
      rust: kunit: allow to know if we are in a test

 MAINTAINERS          |   1 +
 rust/kernel/kunit.rs | 181 +++++++++++++++++++++++++++++++++++++++++++++++++++
 rust/kernel/lib.rs   |   1 +
 rust/macros/kunit.rs | 149 ++++++++++++++++++++++++++++++++++++++++++
 rust/macros/lib.rs   |  29 +++++++++
 5 files changed, 361 insertions(+)
---
base-commit: 64bd4641310c41a1ecf07c13c67bc0ed61045dfd
change-id: 20230720-rustbind-477964954da5

Best regards,
-- 
David Gow <davidgow@...gle.com>