Move this file over to position/tests. That makes it an integration test, technically.
Update it to comply with the current API conventions. This is a pretty radical
change from when I first wrote these!
In the process of running these tests, I found a bug in my PawnMoveGenerator where
it was generating the origin squares for en passant captures incorrectly. Fix
those bugs and write two new tests to exercise those code paths.
One of the test_board! variants was setting .active_color instead of using the
setter. This is a build failure. Fix it.
Move the assert_move_list! macro to the moves crate. This is a more natural home
for it. Additionally, add assert_move_list_contains! and assert_move_list_does_not_contain!
to generate assertions that a collection of moves (anything that implements
.contains()) has or doesn't have a set of moves. Also remove formatted_move_list!,
which is no longer used.
All that done, make the tests pass!
Make the struct fields private and export getters and various setters for
manipulating the data.
Update all the references to these fields to use the getters and setters instead.
A generator that yields moves for all pieces on the board. This generator combines
the shape-specific move generators developed in prior commits into a single
iterator that yields all moves.
Implement FusedIterator for all generators so AllPiecesMoveGenerator can avoid
doing a bunch of extra work once each iterator has yielded None.
Add another sub-iterator to the PawnMoveGenerator that produces promotion pushes
or capture moves (depending on move_type) when a pawn moves to the back rank.
Also implement en passant moves.
Fix a bug in the Left and Right captures branches where the wrong neighbors used
to calculate origin squares.
Add a whole bunch of tests. Still missing several cases though.
I used Claude to help me figure this out. First time using AI for coding. It was
actually rather helpful!
Calculate BitBoards representing the various kinds of pawn moves when the move
generator is created, and then iterate through them.
En passant still isn't implemented here. This code has not been tested yet either.
