#[cfg(test)]
mod tests {
use crate::set_algorithms::is_frequency_unique::is_frequency_unique;
#[test]
fn test_is_frequency_unique() {
let arr = [1, 2, 2, 3, 3, 3];
assert!(is_frequency_unique(&arr));
let arr = [1, 2, 2, 3, 3];
assert!(!is_frequency_unique(&arr));
let arr: [i32; 0] = [];
assert!(is_frequency_unique(&arr));
}
}