Macro assert_that_code

macro_rules! assert_that_code {
    ($subject:expr) => { ... };
}

Available on crate feature panic only.

Starts an assertion for some piece of code in the PanicOnFail mode.

It takes a closure and wraps it into a Spec. On the Spec any assertion method that is implemented for closures can be called.

Assertions started with assert_that_code! will panic on the first failing assertion.

Examples

use asserting::prelude::*;

fn divide(a: i32, b: i32) -> i32 {
    a / b
}

assert_that_code!(|| { divide(7, 0); }).panics();

assert_that_code!(|| { divide(7, 0); })
    .panics_with_message("attempt to divide by zero");

assert_that_code!(|| { divide(7, 3); }).does_not_panic();