add a bunch of prop tests

src/repr.rs

@@ -163,4 +163,50 @@ mod test {
             "(0, 1) was overridden even though it's an empty space"
         );
     }
+
+    #[test]
+    fn long_capture() {
+        let mut board = Board::new();
+
+        assert_eq!(board.place(0, 0, Piece::Black), Ok(()));
+
+        for j in 1..=6 {
+            assert_eq!(board.place(0, j, Piece::White), Ok(()));
+        }
+
+        assert_eq!(board.place(0, 7, Piece::Black), Ok(()));
+
+        for j in 2..=6 {
+            assert_eq!(
+                board.get(0, j),
+                &Some(Piece::Black),
+                "should be black at: ({}, {})",
+                0,
+                j
+            );
+        }
+    }
+
+    #[test]
+    fn long_capture_vert() {
+        let mut board = Board::new();
+
+        assert_eq!(board.place(0, 0, Piece::Black), Ok(()));
+
+        for i in 1..=6 {
+            assert_eq!(board.place(i, 0, Piece::White), Ok(()));
+        }
+
+        assert_eq!(board.place(7, 0, Piece::Black), Ok(()));
+
+        for i in 2..=6 {
+            assert_eq!(
+                board.get(i, 0),
+                &Some(Piece::Black),
+                "should be black at: ({}, {})",
+                i,
+                0
+            );
+        }
+    }
 }