Board: add test for formatting

src/repr/board.rs

@@ -96,9 +96,9 @@ impl fmt::Display for Board {
         const SPACE_PADDING: &str = const_str::repeat!(" ", PADDING);
 
         // Print numbers at top so the board can be read more easier
-        write!(f, "{} ", SPACE_PADDING)?;
+        write!(f, "{}", SPACE_PADDING)?;
         for j in (0..Self::SIZE).rev() {
-            write!(f, "{:0PADDING$} ", j)?;
+            write!(f, " {:0PADDING$}", j)?;
         }
         writeln!(f)?;
 
@@ -530,4 +530,31 @@ mod test {
 
         assert_eq!(board.get((6, 0).into()), Some(Piece::Black), "\n{}", board);
     }
+
+    #[test]
+    fn format_test() {
+        assert_eq!(
+            Board::new().starting_pos().to_string().as_str(),
+            "  7 6 5 4 3 2 1 0
+ -----------------
+7| | | | | | | | |
+ -----------------
+6| | | | | | | | |
+ -----------------
+5| | | | | | | | |
+ -----------------
+4| | | |■|□| | | |
+ -----------------
+3| | | |□|■| | | |
+ -----------------
+2| | | | | | | | |
+ -----------------
+1| | | | | | | | |
+ -----------------
+0| | | | | | | | |
+ -----------------
+White Score: 2
+Black Score: 2\n"
+        );
+    }
 }