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.