meson/test cases/rust/9 unit tests/test2.rs

mod test;
use std::env;

fn main() {
    let args: Vec<String> = env::args().collect();
    let first = args[1].parse::<i32>().expect("Invliad value for first argument.");
    let second = args[2].parse::<i32>().expect("Invliad value for second argument.");

    let new = test::add(first, second);
    println!("New value: {}", new);
}
modules: Add an unstable-rust module Like other language specific modules this module is module for holding rust specific helpers. This commit adds a test() function, which simplifies using rust's internal unittest mechanism. Rust tests are generally placed in the same code files as they are testing, in contrast to languages like C/C++ and python which generally place the tests in separate translation units. For meson this is somewhat problematic from a repetition point of view, as the only changes are generally adding --test, and possibly some dependencies. The rustmod.test() method provides a mechanism to remove the repatition: it takes a rust target, copies it, and then addes the `--test` option, then creates a Test() target with the `rust` protocol. You can pass additional dependencies via the `dependencies` keyword. This all makes for a nice, DRY, test definition. 4 years ago			`mod test;`
			`use std::env;`

			`fn main() {`
			`let args: Vec<String> = env::args().collect();`
			`let first = args[1].parse::<i32>().expect("Invliad value for first argument.");`
			`let second = args[2].parse::<i32>().expect("Invliad value for second argument.");`

			`let new = test::add(first, second);`
			`println!("New value: {}", new);`
			`}`