#assert #match #pattern

dev assert_matches

Asserts that a value matches a pattern

5 stable releases

1.3.0 Jul 12, 2018
1.2.0 Mar 6, 2018
1.1.0 Feb 4, 2017
1.0.1 Jun 22, 2016
1.0.0 Feb 16, 2016

#2 in #match

Download history 6357/week @ 2019-10-11 6523/week @ 2019-10-18 6042/week @ 2019-10-25 6060/week @ 2019-11-01 7501/week @ 2019-11-08 9030/week @ 2019-11-15 9414/week @ 2019-11-22 10497/week @ 2019-11-29 12231/week @ 2019-12-06 11280/week @ 2019-12-13 6452/week @ 2019-12-20 6013/week @ 2019-12-27 10503/week @ 2020-01-03 13143/week @ 2020-01-10 10712/week @ 2020-01-17

34,852 downloads per month
Used in 166 crates (114 directly)

MIT/Apache

12KB
193 lines

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 = "1.2"

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.


lib.rs:

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.

No runtime deps