@Test
public void testAddMove() {
Board board = new Board();
// Add a new move to the board, should return true because unoccupied
assertTrue(board.addMove(0, true));
// Check if the move is actually on the board
assertTrue(board.getMoves()[0].getSymbol());
// Try adding a new move to an occupied space
assertFalse(board.addMove(0, false));
// Verify that the original move was not overwritten
assertTrue(board.getMoves()[0].getSymbol());
}
@Test
public void testGetMoveAt() {
Board board = new Board();
assertNull(board.getMoveAt(-1));
assertNull(board.getMoveAt(9));
board.addMove(3, true);
assertTrue(board.getMoveAt(3).getSymbol());
}
@Test
public void testGetMoves() {
Board board = new Board();
board.addMove(0, true);
board.addMove(2, false);
board.addMove(4, true);
board.addMove(7, false);
Move[] moves = board.getMoves();
assertTrue(moves[0].getSymbol());
assertFalse(moves[2].getSymbol());
assertTrue(moves[4].getSymbol());
assertFalse(moves[7].getSymbol());
assertNull(moves[1]);
assertNull(moves[3]);
assertNull(moves[5]);
assertNull(moves[6]);
assertNull(moves[8]);
}
@Test
public void testIsFull() {
Board board = new Board();
// Board is empty
assertFalse(board.isFull());
// Fill the board with moves
for (int i = 0; i < 9; i++) {
board.addMove(i, true);
}
// Board is full
assertTrue(board.isFull());
}
// Test all winning moves for both players
@Test
public void testCheckWinner() {
// Testing for player 'X'
Board board = new Board();
// Empty board, no winner
assertNull(board.checkWinner());
// Third column
board.addMove(2, true);
board.addMove(5, true);
board.addMove(8, true);
assertTrue(board.checkWinner());
board = new Board();
// Bottom row
board.addMove(6, false);
board.addMove(7, false);
board.addMove(8, false);
assertFalse(board.checkWinner());
board = new Board();
// Middle column
board.addMove(1, false);
board.addMove(4, false);
board.addMove(7, false);
assertFalse(board.checkWinner());
board = new Board();
// Diagonal from upper right
board.addMove(2, true);
board.addMove(4, true);
board.addMove(6, true);
assertTrue(board.checkWinner());
board = new Board();
// Top row
board.addMove(0, true);
board.addMove(1, true);
board.addMove(2, true);
assertTrue(board.checkWinner());
board = new Board();
// First column
board.addMove(0, true);
board.addMove(3, true);
board.addMove(6, true);
assertTrue(board.checkWinner());
board = new Board();
// Middle row
board.addMove(3, false);
board.addMove(4, false);
board.addMove(5, false);
assertFalse(board.checkWinner());
board = new Board();
// Left->right diagonal
board.addMove(0, true);
board.addMove(4, true);
board.addMove(8, true);
assertTrue(board.checkWinner());
board = new Board();
// Top row with different values, no winner
board.addMove(0, false);
board.addMove(1, true);
board.addMove(2, false);
assertNull(board.checkWinner());
}
