72 lines
1.5 KiB
Rust
72 lines
1.5 KiB
Rust
extern crate strsim;
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use strsim::{
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damerau_levenshtein, hamming, jaro, jaro_winkler, levenshtein, normalized_damerau_levenshtein,
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normalized_levenshtein, osa_distance,
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};
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macro_rules! assert_delta {
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($x:expr, $y:expr) => {
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assert_delta!($x, $y, 1e-5);
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};
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($x:expr, $y:expr, $d:expr) => {
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if ($x - $y).abs() > $d {
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panic!(
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"assertion failed: actual: `{}`, expected: `{}`: \
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actual not within < {} of expected",
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$x, $y, $d
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);
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}
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};
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}
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#[test]
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fn hamming_works() {
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match hamming("hamming", "hammers") {
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Ok(distance) => assert_eq!(3, distance),
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Err(why) => panic!("{:?}", why),
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}
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}
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#[test]
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fn levenshtein_works() {
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assert_eq!(3, levenshtein("kitten", "sitting"));
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}
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#[test]
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fn normalized_levenshtein_works() {
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assert_delta!(0.57142, normalized_levenshtein("kitten", "sitting"));
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}
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#[test]
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fn osa_distance_works() {
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assert_eq!(3, osa_distance("ac", "cba"));
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}
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#[test]
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fn damerau_levenshtein_works() {
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assert_eq!(2, damerau_levenshtein("ac", "cba"));
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}
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#[test]
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fn normalized_damerau_levenshtein_works() {
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assert_delta!(
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0.27272,
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normalized_damerau_levenshtein("levenshtein", "löwenbräu")
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);
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}
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#[test]
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fn jaro_works() {
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assert_delta!(
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0.392,
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jaro("Friedrich Nietzsche", "Jean-Paul Sartre"),
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0.001
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);
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}
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#[test]
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fn jaro_winkler_works() {
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assert_delta!(0.866, jaro_winkler("cheeseburger", "cheese fries"), 0.001);
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}
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