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rustlings/exercises/quiz3.rs
Pascal H 0d894e6ff7
fix(quiz3): Force an answer to Q2 (#672)
Add also an example of unimplemented!() macro.
2021-03-16 10:14:25 +01:00

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!()
}
}