mirror of
https://github.com/notohh/rustlings.git
synced 2024-11-29 08:44:16 -05:00
24 lines
538 B
Rust
24 lines
538 B
Rust
// Tests are important to ensure that your code does what you think it should
|
|
// do.
|
|
|
|
fn is_even(n: i64) -> bool {
|
|
n % 2 == 0
|
|
}
|
|
|
|
fn main() {
|
|
// You can optionally experiment here.
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
// When writing unit tests, it is common to import everything from the outer
|
|
// module (`super`) using a wildcard.
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn you_can_assert() {
|
|
assert!(is_even(0));
|
|
assert!(!is_even(-1));
|
|
// ^ You can assert `false` using the negation operator `!`.
|
|
}
|
|
}
|