import java.util.*;
import static org.junit.Assert.*;
import org.junit.*;

public class DateTest {
    // private ...
    private Random rand = new Random();
    
    // run this code before the unit tests
    @Before
    public void setup() {
        // ...db..
    }
    
    @Test
    public void testDateIntIntInt1() {
        Date d = new Date(2008, 2, 15);
        assertEquals(2008, d.getYear());
        assertEquals(2, d.getMonth());
        assertEquals(15, d.getDay());

        Date d2 = new Date(1979, 9, 19);
        assertEquals(1979, d2.getYear());
        assertEquals(9, d2.getMonth());
        assertEquals(19, d2.getDay());
    }
    
    @Test(expected = IllegalArgumentException.class)
    public void testDateIntIntInt2() {
        new Date(2008, -2, 57);
    }
    
    @Test
    public void testAddDays() {
        // sep 1 1752  +2  =>  14    :'(
        
        // 2038 => 2039
        
        // add 1 day 
        // add 0 days
        
        // add negative days 
        // add enough days to make year 5-digits
        
        // test 3 leap year cases
        // every 4 unless 100 unless 400
        
        // add 2 days from feb 28 in leap year
        addDaysHelper(2008, 2, 28, 2, 2008, 3, 1);
        
        // wrapping around months
        
        // garbage (strings)
        
        // call addDays TWICE
        
        // 1) split method up
        // 2) helper methods
    }
    
    
    
    
    
    
    
    
    
    
    
    
    
    private void addDaysHelper(int m, int d, int add, int m2, int d2) {
        addDaysHelper(2008, m, d, add, 2008, m2, d2);
    }
    
    private void addDaysHelper(int y, int m, int d, int add, 
            int y2, int m2, int d2) {
        Date date = new Date(y, m, d);
        date.addDays(add);
        assertEquals(date.toString(), y2, date.getYear());
        assertEquals(date.toString(), m2, date.getMonth());
        assertEquals(date.toString(), d2, date.getDay());
    }
}