#import "../game.typ": apply-moves
#import "testutil.typ": assert-eq

// Queen blocked by own pawn on d2
#assert-eq(apply-moves(("Qd3",)).last().error, "Qd3: illegal move")
#assert-eq(apply-moves(("qd3",)).last().error, "qd3: illegal move")

// knight can't reach e4 from g8
#let st = apply-moves(("e4", "e5", "Nc3", "c6", "Ne4")).last()
#assert-eq(st.error, "Ne4: illegal move")

// pawn move to occupied square
#let st = apply-moves(("e4", "e5", "e4")).last()
#assert-eq(st.error, "e4: illegal move")

// bishop capture with no target
#let st = apply-moves(("d4", "d5", "Bxe5")).last()
#assert-eq(st.error, "Bxe5: illegal move")

// eook on h1 after castling
#let st = apply-moves(("e4", "e5", "Nf3", "Nc6", "Bc4", "Bc5", "O-O", "Rh1")).last()
#assert-eq(st.error, "Rh1: illegal move")

// moving while in check without addressing it
#let st = apply-moves(("e4", "e5", "Qh5", "a6", "Qe5", "a5")).last()
#assert-eq(st.error, "a5: illegal move")

// error clears on next valid move
#let st = apply-moves(("zzz", "e4")).last()
#assert-eq(st.error, none)