pleshevskiy/mykatas
1
0
Fork 0
Code Releases Activity

fix(rust): tests in likes kata

Browse source
This commit is contained in:
Dmitriy Pleshevskiy 2021-10-30 14:05:57 +03:00
parent 864453f1eb
commit c32b453ed3
1 changed files with 17 additions and 68 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

85
rust/tests/5_likes.rs
View file

@ -7,73 +7,22 @@ fn likes(names: &[&str]) -> String {
[a, b, rest @ ..] => format!("{}, {} and {} others like this", a, b, rest.len()),
}
}
#[cfg(test)]
mod tests {
use super::likes;
#[test]
fn fixed_tests() {
assert_eq!(likes(&[]), "no one likes this");
assert_eq!(likes(&["Peter"]), "Peter likes this");
assert_eq!(likes(&["Jacob", "Alex"]), "Jacob and Alex like this");
assert_eq!(
likes(&["Max", "John", "Mark"]),
"Max, John and Mark like this"
);
assert_eq!(
likes(&["Alex", "Jacob", "Mark", "Max"]),
"Alex, Jacob and 2 others like this"
);
assert_eq!(
likes(&["a", "b", "c", "d", "e"]),
"a, b and 3 others like this"
);
}
#[test]
fn random_tests() {
use rand::{seq::SliceRandom, thread_rng, Rng};
let mut rng = thread_rng();
let mut base = vec![
"Sylia Stingray",
"Priscilla S. Asagiri",
"Linna Yamazaki",
"Nene Romanova",
"Nigel",
"Macky Stingray",
"Largo",
"Brian J. Mason",
"Sylvie",
"Anri",
"Leon McNichol",
"Daley Wong",
"Galatea",
"Quincy Rosenkreutz",
];
for _ in 0..100 {
base.shuffle(&mut rng);
let len = rng.gen_range(0..base.len());
let names = base.iter().take(len).cloned().collect::<Vec<_>>();
let actual = likes(&names);
let expect = likes_solution(&names);
assert_eq!(actual, expect);
}
}
fn likes_solution(names: &[&str]) -> String {
let l = names.len();
match l {
0 => "no one likes this".to_owned(),
1 => format!("{} likes this", names[0]),
2 => format!("{} and {} like this", names[0], names[1]),
3 => format!("{}, {} and {} like this", names[0], names[1], names[2]),
_ => format!("{}, {} and {} others like this", names[0], names[1], l - 2),
}
}
#[test]
fn fixed_tests() {
assert_eq!(likes(&[]), "no one likes this");
assert_eq!(likes(&["Peter"]), "Peter likes this");
assert_eq!(likes(&["Jacob", "Alex"]), "Jacob and Alex like this");
assert_eq!(
likes(&["Max", "John", "Mark"]),
"Max, John and Mark like this"
);
assert_eq!(
likes(&["Alex", "Jacob", "Mark", "Max"]),
"Alex, Jacob and 2 others like this"
);
assert_eq!(
likes(&["a", "b", "c", "d", "e"]),
"a, b and 3 others like this"
);
}