# cov-mark Verify that your tests exercise the conditions you think they are exercising ```rust fn safe_divide(dividend: u32, divisor: u32) -> u32 { if divisor == 0 { cov_mark::hit!(save_divide_zero); return 0; } dividend / divisor } #[test] fn test_safe_divide_by_zero() { cov_mark::check!(save_divide_zero); assert_eq!(safe_divide(92, 0), 0); } ``` See [the docs](https://docs.rs/cov-mark) for details