7 stable releases

Uses old Rust 2015

1.5.0 Feb 5, 2021
1.4.0 Oct 4, 2020
1.3.0 Jul 12, 2018
1.2.0 Mar 6, 2018
1.0.0 Feb 16, 2016

#1 in #pattern-match

Download history 189025/week @ 2024-12-17 78280/week @ 2024-12-24 127499/week @ 2024-12-31 245994/week @ 2025-01-07 255031/week @ 2025-01-14 250143/week @ 2025-01-21 258474/week @ 2025-01-28 308898/week @ 2025-02-04 295095/week @ 2025-02-11 287515/week @ 2025-02-18 286481/week @ 2025-02-25 287818/week @ 2025-03-04 337779/week @ 2025-03-11 304536/week @ 2025-03-18 323486/week @ 2025-03-25 276178/week @ 2025-04-01

1,297,599 downloads per month
Used in 1,671 crates (887 directly)

MIT/Apache

14KB
209 lines

Provides a macro, assert_matches!, which tests whether a value matches a given pattern, causing a panic if the match fails.

See the macro assert_matches! documentation for more information.

Also provides a debug-only counterpart, debug_assert_matches!.

See the macro debug_assert_matches! documentation for more information about this macro.


assert_matches

Provides a macro, assert_matches, which tests whether a value matches a given pattern, causing a panic if the match fails.

Documentation

#[macro_use] extern crate assert_matches;

#[derive(Debug)]
enum Foo {
    A(i32),
    B(i32),
}

let a = Foo::A(1);

assert_matches!(a, Foo::A(_));

assert_matches!(a, Foo::A(i) if i > 0);

To include in your project, only when tests are compiled, add the following to your Cargo.toml:

[dev-dependencies]
assert_matches = "1.5"

And add the following to your crate root:

#[cfg(test)] #[macro_use]
extern crate assert_matches;

License

assert_matches is distributed under the terms of both the MIT license and the Apache License (Version 2.0).

See LICENSE-APACHE and LICENSE-MIT for details.

No runtime deps