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use std::collections::HashSet;
fn process_anagram_case(word: &str, inputs: &[&str], expected: &[&str]) {
let result = anagram::anagrams_for(word, inputs);
let expected: HashSet<&str> = expected.iter().cloned().collect();
assert_eq!(result, expected);
}
#[test]
fn test_no_matches() {
let word = "diaper";
let inputs = ["hello", "world", "zombies", "pants"];
let outputs = vec![];
process_anagram_case(word, &inputs, &outputs);
}
#[test]
fn test_detect_simple_anagram() {
let word = "ant";
let inputs = ["tan", "stand", "at"];
let outputs = vec!["tan"];
process_anagram_case(word, &inputs, &outputs);
}
#[test]
fn test_does_not_confuse_different_duplicates() {
let word = "galea";
let inputs = ["eagle"];
let outputs = vec![];
process_anagram_case(word, &inputs, &outputs);
}
#[test]
fn test_eliminate_anagram_subsets() {
let word = "good";
let inputs = ["dog", "goody"];
let outputs = vec![];
process_anagram_case(word, &inputs, &outputs);
}
#[test]
fn test_detect_anagram() {
let word = "listen";
let inputs = ["enlists", "google", "inlets", "banana"];
let outputs = vec!["inlets"];
process_anagram_case(word, &inputs, &outputs);
}
#[test]
fn test_multiple_anagrams() {
let word = "allergy";
let inputs = [
"gallery",
"ballerina",
"regally",
"clergy",
"largely",
"leading",
];
let outputs = vec!["gallery", "regally", "largely"];
process_anagram_case(word, &inputs, &outputs);
}
#[test]
fn test_case_insensitive_anagrams() {
let word = "Orchestra";
let inputs = ["cashregister", "Carthorse", "radishes"];
let outputs = vec!["Carthorse"];
process_anagram_case(word, &inputs, &outputs);
}
#[test]
fn test_unicode_anagrams() {
let word = "ΑΒΓ";
// These words don't make sense, they're just greek letters cobbled together.
let inputs = ["ΒΓΑ", "ΒΓΔ", "γβα"];
let outputs = vec!["ΒΓΑ", "γβα"];
process_anagram_case(word, &inputs, &outputs);
}
#[test]
fn test_misleading_unicode_anagrams() {
// Despite what a human might think these words contain different letters, the input uses Greek
// A and B while the list of potential anagrams uses Latin A and B.
let word = "ΑΒΓ";
let inputs = ["ABΓ"];
let outputs = vec![];
process_anagram_case(word, &inputs, &outputs);
}
#[test]
fn test_does_not_detect_a_word_as_its_own_anagram() {
let word = "banana";
let inputs = ["banana"];
let outputs = vec![];
process_anagram_case(word, &inputs, &outputs);
}
#[test]
fn test_does_not_detect_a_differently_cased_word_as_its_own_anagram() {
let word = "banana";
let inputs = ["bAnana"];
let outputs = vec![];
process_anagram_case(word, &inputs, &outputs);
}
#[test]
fn test_does_not_detect_a_differently_cased_unicode_word_as_its_own_anagram() {
let word = "ΑΒΓ";
let inputs = ["ΑΒγ"];
let outputs = vec![];
process_anagram_case(word, &inputs, &outputs);
}
#[test]
fn test_same_bytes_different_chars() {
let word = "a⬂"; // 61 E2 AC 82
let inputs = ["€a"]; // E2 82 AC 61
let outputs = vec![];
process_anagram_case(word, &inputs, &outputs);
}
#[test]
fn test_different_words_but_same_ascii_sum() {
let word = "bc";
let inputs = ["ad"];
let outputs = vec![];
process_anagram_case(word, &inputs, &outputs);
}
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