[board] Make the MoveSet struct (and its internal structs) public for the crate

board/src/move_generator/mod.rs

@@ -10,8 +10,7 @@ mod queen;
 mod rook;
 
 pub use move_generator::Moves;
-
-pub(self) use move_set::MoveSet;
+pub(crate) use move_set::MoveSet;
 
 use crate::{
     piece::{Color, Piece, PlacedPiece},

board/src/move_generator/move_set.rs

@@ -1,17 +1,26 @@
 use crate::{piece::PlacedPiece, BitBoard, Move};
 
+#[derive(Clone, Debug, Eq, PartialEq)]
 struct BitBoardSet {
     quiet: BitBoard,
     captures: BitBoard,
 }
 
+#[derive(Clone, Debug, Eq, PartialEq)]
 struct MoveListSet {
     quiet: Vec<Move>,
     captures: Vec<Move>,
 }
 
+impl MoveListSet {
+    pub fn contains(&self, mv: &Move) -> bool {
+        self.quiet.contains(mv) || self.captures.contains(mv)
+    }
+}
+
 /// A set of moves for a piece on the board.
-pub(super) struct MoveSet {
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub(crate) struct MoveSet {
     piece: PlacedPiece,
     bitboards: BitBoardSet,
     move_lists: MoveListSet,