rust leetcode 67 use assert

rust-leetcode/src/leetcode_67.rs

@@ -18,6 +18,6 @@ mod test {
     fn add_binary() {
         let ret = Solution::add_binary("10100000100100110110010000010101111011011001101110111111111101000000101111001110001111100001101".to_owned(),
                                        "110101001011101110001111100110001010100001101011101010000011011011001011101111001100000011011110011".to_owned());
-        println!("{}", ret)
+        assert!(ret.as_str() == "110111101100010011000101110110100000011101000101011001000011011000001100011110011010010011000000000")
     }
 }