return 0;
int main() {  using namespace boost::gregorian;  using namespace boost::posix_time;  date d1(2001,Jan, 1);  ptime t1 (d1,hours(2));//2001-Jan-1 02:00:00  ptime t2 (d1,hours(3));//2001-Jan-1 03:00:00  time_period p1(t1,t2); //2001-Jan-1 02:59:59  time_period p2(p1);  check("copy construct & ==", p1 == p2);  time_period p3 = p2;  check("assignment", p3 == p2);  time_period p4(t1,hours(1));  check("length", p4.length() == hours(1));  std::cout << to_simple_string(t1) << std::endl;  std::cout << to_simple_string(p4) << std::endl;  std::cout << to_simple_string(p1) << std::endl;  check("construction and ==", p1 == p4);  check("begin", p1.begin() == t1);  check("last",  p1.end()   == t2);  check("end",   p1.last()  == t2-time_duration::unit());    std::cout << to_simple_string(p1) << std::endl;  //  check("last",  p1.()  == t2);  check("contains begin", p1.contains(t1));  check("contains end-not", !p1.contains(t2));  check("contains last",  p1.contains(t2-seconds(1)));  ptime t3(date(2001,Jan,1),hours(4));  time_period p5(t2,t3);  check("check contains", !p1.contains(p5.begin()));  check("check contains", !p5.contains(p1.begin()));  check("operator== not equal case", !(p1 == p5));  check("less than order", p1 < p5);  check("greater than order", p5 > p1);  check("not equal", p5 != p1);  check("intersects with myself", p1.intersects(p1));  check("not intersects", !(p1.intersects(p5)));  check("not intersects", !(p5.intersects(p1)));  time_period p6(p5);  p6.shift(minutes(30));  std::cout << to_simple_string(p5) << std::endl;  std::cout << to_simple_string(p6) << std::endl;  check("shifted intersects",    p5.intersects(p6));  check("shifted intersects",    p6.intersects(p5));  check("contains begin",        p5.contains(p6.begin()));  p6.shift(minutes(30));  std::cout << to_simple_string(p5) << std::endl;  std::cout << to_simple_string(p6) << std::endl;  check("shifted !intersects",    !p5.intersects(p6));  check("shifted !intersects",    !p6.intersects(p5));  p6.shift(minutes(-30));  std::cout << to_simple_string(p5) << std::endl;  std::cout << to_simple_string(p6) << std::endl;  time_period p7 = p5.intersection(p6);  std::cout << to_simple_string(p7) << std::endl;  check("shifted intersection",            p7 == time_period(ptime(d1,time_duration(3,30,0)),                          ptime(d1,time_duration(4,0,0))));      printTestStats();  return 0;}