private function lose(Player $player) : bool
{
if ($player->equals(Player::X())) {
return $this->win(Player::O());
}
return $this->win(Player::X());
}
public function testEngineHandlesOneDrawOption()
{
$X = Player::X();
$state = new GameState();
// OXX
// OO
// XOX
$state->fillField(2, 0);
// X
$state->fillField(0, 0);
// O
$state->fillField(0, 2);
// X
$state->fillField(1, 1);
// O
$state->fillField(0, 1);
// X
$state->fillField(2, 1);
// O
$state->fillField(2, 2);
// X
$state->fillField(1, 2);
// O
$engine = new Engine($X);
$decision = $engine->decide($state);
$newState = $decision->apply($state);
$this->assertTrue($newState->getField(1, 0)->equals($X), 'Middle-left field must be taken by X');
}
