use algorithmz::map::is_valid_sudoku;
#[test]
fn test_is_valid_sudoku_empty() {
let result = is_valid_sudoku(vec![]);
assert!(matches!(result, Err (ref e) if e == "Cannot be an empty board!"));
}
#[test]
fn test_is_valid_sudoku() {
let board = vec![vec!['.';9];9];
let result = is_valid_sudoku(board).unwrap();
assert_eq!(result,true)
}