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use crate::utils::is_char_halfwidth_katakana::is_char_halfwidth_katakana;
use crate::utils::is_char_katakana::*;
/// Test if all chars of `input` are [Katakana](https://en.wikipedia.org/wiki/Katakana)
pub fn is_katakana(input: &str) -> bool {
if input.is_empty() {
return false;
}
input.chars().all(is_char_katakana)
}
/// Test if `input` contains any [Half-width Katakana](https://en.wikipedia.org/wiki/Half-width_kana)
pub fn is_mixed_halfwidth_katakana(input: &str) -> bool {
if input.is_empty() {
return false;
}
input.chars().any(is_char_halfwidth_katakana)
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn sane_defaults() {
assert!(!is_katakana(""));
}
#[test]
fn アア_is_katakana() {
assert!(is_katakana("アア"));
}
#[test]
fn ア_is_katakana() {
assert!(is_katakana("ア"));
}
#[test]
fn あ_is_not_katakana() {
assert!(!is_katakana("あ"));
}
#[test]
fn a_is_not_katakana() {
assert!(!is_katakana("A"));
}
#[test]
fn あア_is_not_katakana() {
assert!(!is_katakana("あア"));
}
#[test]
fn ignores_long_dash_in_katakana() {
assert!(is_katakana("ゲーム"));
}
}