rust_stringz 1.0.0

A simple string manipulation library for Rust that you should probably don't need. It's just for learning purposes.
Documentation 
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pub fn to_lowercase(s: &str) -> String {
    s.to_lowercase()
}

mod tests {
    use super::to_lowercase;

    #[test]
    fn test_all_uppercase() {
        let result = to_lowercase("TEST");
        assert_eq!(result, "test");
    }

    #[test]
    fn test_mixed_case() {
        let result: String = to_lowercase("TeSt_TeSt");
        assert_eq!(result, "test_test");
    }
}