4 fn test_lev_distance() {
5 use std::char::{from_u32, MAX};
6 // Test bytelength agnosticity
7 for c in (0..MAX as u32).filter_map(|i| from_u32(i)).map(|i| i.to_string()) {
8 assert_eq!(lev_distance(&c[..], &c[..]), 0);
11 let a = "\nMäry häd ä little lämb\n\nLittle lämb\n";
12 let b = "\nMary häd ä little lämb\n\nLittle lämb\n";
13 let c = "Mary häd ä little lämb\n\nLittle lämb\n";
14 assert_eq!(lev_distance(a, b), 1);
15 assert_eq!(lev_distance(b, a), 1);
16 assert_eq!(lev_distance(a, c), 2);
17 assert_eq!(lev_distance(c, a), 2);
18 assert_eq!(lev_distance(b, c), 1);
19 assert_eq!(lev_distance(c, b), 1);
23 fn test_find_best_match_for_name() {
24 use crate::with_default_session_globals;
25 with_default_session_globals(|| {
26 let input = vec![Symbol::intern("aaab"), Symbol::intern("aaabc")];
28 find_best_match_for_name(input.iter(), Symbol::intern("aaaa"), None),
29 Some(Symbol::intern("aaab"))
33 find_best_match_for_name(input.iter(), Symbol::intern("1111111111"), None),
37 let input = vec![Symbol::intern("aAAA")];
39 find_best_match_for_name(input.iter(), Symbol::intern("AAAA"), None),
40 Some(Symbol::intern("aAAA"))
43 let input = vec![Symbol::intern("AAAA")];
44 // Returns None because `lev_distance > max_dist / 3`
45 assert_eq!(find_best_match_for_name(input.iter(), Symbol::intern("aaaa"), None), None);
47 let input = vec![Symbol::intern("AAAA")];
49 find_best_match_for_name(input.iter(), Symbol::intern("aaaa"), Some(4)),
50 Some(Symbol::intern("AAAA"))
53 let input = vec![Symbol::intern("a_longer_variable_name")];
55 find_best_match_for_name(input.iter(), Symbol::intern("a_variable_longer_name"), None),
56 Some(Symbol::intern("a_longer_variable_name"))