57 lines
1.9 KiB
Rust
57 lines
1.9 KiB
Rust
use super::*;
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#[test]
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fn test_lev_distance() {
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use std::char::{from_u32, MAX};
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// Test bytelength agnosticity
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for c in (0..MAX as u32).filter_map(from_u32).map(|i| i.to_string()) {
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assert_eq!(lev_distance(&c[..], &c[..]), 0);
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}
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let a = "\nMäry häd ä little lämb\n\nLittle lämb\n";
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let b = "\nMary häd ä little lämb\n\nLittle lämb\n";
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let c = "Mary häd ä little lämb\n\nLittle lämb\n";
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assert_eq!(lev_distance(a, b), 1);
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assert_eq!(lev_distance(b, a), 1);
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assert_eq!(lev_distance(a, c), 2);
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assert_eq!(lev_distance(c, a), 2);
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assert_eq!(lev_distance(b, c), 1);
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assert_eq!(lev_distance(c, b), 1);
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}
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#[test]
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fn test_find_best_match_for_name() {
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use crate::with_default_session_globals;
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with_default_session_globals(|| {
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let input = vec![Symbol::intern("aaab"), Symbol::intern("aaabc")];
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assert_eq!(
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find_best_match_for_name(&input, Symbol::intern("aaaa"), None),
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Some(Symbol::intern("aaab"))
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);
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assert_eq!(find_best_match_for_name(&input, Symbol::intern("1111111111"), None), None);
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let input = vec![Symbol::intern("aAAA")];
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assert_eq!(
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find_best_match_for_name(&input, Symbol::intern("AAAA"), None),
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Some(Symbol::intern("aAAA"))
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);
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let input = vec![Symbol::intern("AAAA")];
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// Returns None because `lev_distance > max_dist / 3`
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assert_eq!(find_best_match_for_name(&input, Symbol::intern("aaaa"), None), None);
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let input = vec![Symbol::intern("AAAA")];
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assert_eq!(
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find_best_match_for_name(&input, Symbol::intern("aaaa"), Some(4)),
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Some(Symbol::intern("AAAA"))
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);
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let input = vec![Symbol::intern("a_longer_variable_name")];
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assert_eq!(
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find_best_match_for_name(&input, Symbol::intern("a_variable_longer_name"), None),
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Some(Symbol::intern("a_longer_variable_name"))
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);
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})
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}
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