A simple pytest clone for Rust

rstest use procedural macro to implement simple fixtures and table based tests. To use it you need at least 1.30 toolchain (beta channel till 2018-10-25) and add follow lines to your Cargo.toml file:

[dev-dependencies] rstest = "0.2"

The core idea is that every input arguments of your test function will be resolved by call a function with the same name. You can also use mut argument or generic types.

Example:

```rust

[cfg(test)]

extern crate rstest;

use rstest::rstest;

pub fn fixture() -> u32 { 42 }

[rstest]

fn shouldsuccess(fixture: u32) {     asserteq!(fixture, 42); }

[rstest]

fn shouldfail(fixture: u32) {     assertne!(fixture, 42); } ```

Moreover you can use rstest_parametrize attribute to implement table based tests. An example is the best way to explain it

```rust

[cfg(test)]

extern crate rstest;

use rstest::rstest_parametrize;

[rstest_parametrize(

    expected, input,     case(4, "ciao"),     case(3, "Foo") )] fn strlentest(expected: usize, input: &str) {     asserteq!(expected, input.len()); } ```

You can find more examples in resources directory and in rs8080 that use this module intensely.

License

Licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)

• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.