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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
use deno_core::url::Url;
pub fn find_root(urls: Vec<&Url>) -> Option<Url> {
if urls.is_empty() {
return None;
}
// Gets the common first part of all the urls.
let root = urls[0]
.as_ref()
.chars()
.enumerate()
.take_while(|(i, c)| {
urls.iter().all(|u| u.as_ref().chars().nth(*i) == Some(*c))
})
.map(|(_, c)| c)
.collect::<String>();
if let Some(index) = root.rfind('/') {
// Removes the basename part if exists.
Url::parse(&root[..index + 1]).ok()
} else {
Url::parse(&root).ok()
}
}
pub fn percent_to_class(percent: f32) -> &'static str {
match percent {
x if x < 50.0 => "low",
x if x < 80.0 => "medium",
_ => "high",
}
}
pub fn calc_coverage_display_info(
hit: usize,
miss: usize,
) -> (usize, f32, &'static str) {
let total = hit + miss;
let percent = if total == 0 {
100.0
} else {
(hit as f32 / total as f32) * 100.0
};
let class = percent_to_class(percent);
(total, percent, class)
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_find_root() {
let urls = vec![
Url::parse("file:///a/b/c/d/e.ts").unwrap(),
Url::parse("file:///a/b/c/d/f.ts").unwrap(),
Url::parse("file:///a/b/c/d/g.ts").unwrap(),
];
let urls = urls.iter().collect();
assert_eq!(find_root(urls), Url::parse("file:///a/b/c/d/").ok());
}
#[test]
fn test_find_root_empty() {
let urls = vec![];
assert_eq!(find_root(urls), None);
}
#[test]
fn test_find_root_with_similar_filenames() {
let urls = vec![
Url::parse("file:///a/b/c/d/foo0.ts").unwrap(),
Url::parse("file:///a/b/c/d/foo1.ts").unwrap(),
Url::parse("file:///a/b/c/d/foo2.ts").unwrap(),
];
let urls = urls.iter().collect();
assert_eq!(find_root(urls), Url::parse("file:///a/b/c/d/").ok());
}
#[test]
fn test_find_root_with_similar_dirnames() {
let urls = vec![
Url::parse("file:///a/b/c/foo0/mod.ts").unwrap(),
Url::parse("file:///a/b/c/foo1/mod.ts").unwrap(),
Url::parse("file:///a/b/c/foo2/mod.ts").unwrap(),
];
let urls = urls.iter().collect();
assert_eq!(find_root(urls), Url::parse("file:///a/b/c/").ok());
}
#[test]
fn test_percent_to_class() {
assert_eq!(percent_to_class(0.0), "low");
assert_eq!(percent_to_class(49.9), "low");
assert_eq!(percent_to_class(50.0), "medium");
assert_eq!(percent_to_class(79.9), "medium");
assert_eq!(percent_to_class(80.0), "high");
assert_eq!(percent_to_class(100.0), "high");
}
}
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