| use super::*; |
| |
| #[test] |
| fn test_lev_distance() { |
| use std::char::{from_u32, MAX}; |
| // Test bytelength agnosticity |
| for c in (0..MAX as u32).filter_map(from_u32).map(|i| i.to_string()) { |
| assert_eq!(lev_distance(&c[..], &c[..], usize::MAX), Some(0)); |
| } |
| |
| let a = "\nMäry häd ä little lämb\n\nLittle lämb\n"; |
| let b = "\nMary häd ä little lämb\n\nLittle lämb\n"; |
| let c = "Mary häd ä little lämb\n\nLittle lämb\n"; |
| assert_eq!(lev_distance(a, b, usize::MAX), Some(1)); |
| assert_eq!(lev_distance(b, a, usize::MAX), Some(1)); |
| assert_eq!(lev_distance(a, c, usize::MAX), Some(2)); |
| assert_eq!(lev_distance(c, a, usize::MAX), Some(2)); |
| assert_eq!(lev_distance(b, c, usize::MAX), Some(1)); |
| assert_eq!(lev_distance(c, b, usize::MAX), Some(1)); |
| } |
| |
| #[test] |
| fn test_lev_distance_limit() { |
| assert_eq!(lev_distance("abc", "abcd", 1), Some(1)); |
| assert_eq!(lev_distance("abc", "abcd", 0), None); |
| assert_eq!(lev_distance("abc", "xyz", 3), Some(3)); |
| assert_eq!(lev_distance("abc", "xyz", 2), None); |
| } |
| |
| #[test] |
| fn test_method_name_similarity_score() { |
| assert_eq!(lev_distance_with_substrings("empty", "is_empty", 1), Some(1)); |
| assert_eq!(lev_distance_with_substrings("shrunk", "rchunks", 2), None); |
| assert_eq!(lev_distance_with_substrings("abc", "abcd", 1), Some(1)); |
| assert_eq!(lev_distance_with_substrings("a", "abcd", 1), None); |
| assert_eq!(lev_distance_with_substrings("edf", "eq", 1), None); |
| assert_eq!(lev_distance_with_substrings("abc", "xyz", 3), Some(3)); |
| assert_eq!(lev_distance_with_substrings("abcdef", "abcdef", 2), Some(0)); |
| } |
| |
| #[test] |
| fn test_find_best_match_for_name() { |
| use crate::create_default_session_globals_then; |
| create_default_session_globals_then(|| { |
| let input = vec![Symbol::intern("aaab"), Symbol::intern("aaabc")]; |
| assert_eq!( |
| find_best_match_for_name(&input, Symbol::intern("aaaa"), None), |
| Some(Symbol::intern("aaab")) |
| ); |
| |
| assert_eq!(find_best_match_for_name(&input, Symbol::intern("1111111111"), None), None); |
| |
| let input = vec![Symbol::intern("AAAA")]; |
| assert_eq!( |
| find_best_match_for_name(&input, Symbol::intern("aaaa"), None), |
| Some(Symbol::intern("AAAA")) |
| ); |
| |
| let input = vec![Symbol::intern("AAAA")]; |
| assert_eq!( |
| find_best_match_for_name(&input, Symbol::intern("aaaa"), Some(4)), |
| Some(Symbol::intern("AAAA")) |
| ); |
| |
| let input = vec![Symbol::intern("a_longer_variable_name")]; |
| assert_eq!( |
| find_best_match_for_name(&input, Symbol::intern("a_variable_longer_name"), None), |
| Some(Symbol::intern("a_longer_variable_name")) |
| ); |
| }) |
| } |