@Test
public void testPut() {
board.put(0, 1, new Token('x'));
assertTrue(board.full(0, 1, new Token('x')));
board.put(0, 1, new Token('o'));
assertFalse(board.full(0, 1, new Token('_')));
}
@Test
public void testFull() {
assertFalse(board.full(1, 2, new Token('o')));
board.put(1, 2, new Token('o'));
assertTrue(board.full(1, 2, new Token('o')));
board.put(1, 2, new Token('_'));
assertFalse(board.full(1, 2, new Token('o')));
}