mirror of
https://github.com/rust-lang/rustlings
synced 2024-11-05 00:00:12 +00:00
31 lines
711 B
Rust
31 lines
711 B
Rust
// quiz3.rs
|
|
// This is a quiz for the following sections:
|
|
// - Tests
|
|
|
|
// This quiz isn't testing our function -- make it do that in such a way that
|
|
// the test passes. Then write a second test that tests that we get the result
|
|
// we expect to get when we call `times_two` with a negative number.
|
|
// No hints, you can do this :)
|
|
|
|
// I AM NOT DONE
|
|
|
|
pub fn times_two(num: i32) -> i32 {
|
|
num * 2
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn returns_twice_of_positive_numbers() {
|
|
assert_eq!(times_two(4), ???);
|
|
}
|
|
|
|
#[test]
|
|
fn returns_twice_of_negative_numbers() {
|
|
// TODO replace unimplemented!() with an assert for `times_two(-4)`
|
|
unimplemented!()
|
|
}
|
|
}
|