#include "unittest.h"
#include "board.h"

int main() {
  { // Pop count
    unit_test(pop_count(0b01110) == 3, "Pop count of 01110 is 3");
  }

  { // Test knight attacks
    Bitboard attacks[64];
    precompute_knight_attack_table(attacks);

    int max_attacks = 0;
    for (int i = 0; i < 64; i++) {
      int attack_count = pop_count(attacks[i]);
      if (attack_count > max_attacks) max_attacks = attack_count;
    }
    unit_test(max_attacks == 8, "Max amount of knight attacks should be 8");

    { // Knight on b7 attack table
      U64 bit = 1;
      unit_test(
          attacks[b7] == ((bit << d8) | (bit << d6) | (bit << c5) | (bit << a5)),
          "Knight on b7 attacks d8, d6, c5, a5"
      );
    }
  }

  report();
  return 0;
}