You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: string.rs
    path of file: ./repos/tabled/papergrid/src/util
    
    the code of the file until where you have to start completion: //! This module contains a different functions which are used by the [`Grid`].
//!
//! You should use it if you want to comply with how [`Grid`].
//!
//! 
    
    fn string_dimension_test() {
        assert_eq!(
            string_dimension("\u{1b}[37mnow is the time for all good men\n\u{1b}[0m"),
            {
                #[cfg(feature = "ansi")]
                {
                    (2, 32)
                }
                #[cfg(not(feature = "ansi"))]
                {
                    (2, 36)
                }
            }
        );
        assert_eq!(
            string_dimension("now is the time for all good men\n"),
            (2, 32)
        );
        assert_eq!(string_dimension("asd"), (1, 3));
        assert_eq!(string_dimension(""), (1, 0));
    }