Junit test

import junit.framework.TestCase;

public class NQueensTest extends TestCase {

    public final void testNQueens1() {
        NQueens solver = new NQueens(1);
        int result = solver.count();
        assertEquals(1, result);
    }

    public final void testNQueens2() {
        NQueens solver = new NQueens(2);
        int result = solver.count();

        assertEquals(0, result);
    }

    // and so on ....
}