def test_O_RDONLY__O_CREAT__O_TRUNC_as_number(self):
     self.assertEquals(
                          flags_number("O_RDONLY|O_CREAT|O_TRUNC"), 
                          576
                      )
 def test_O_WRONLY__O_TRUNC__O_LARGEFILE_as_number(self):
     self.assertEquals(
                          flags_number("O_WRONLY|O_TRUNC|O_LARGEFILE"), 
                          33281
                      )
 def test_O_RDONLY__O_NONBLOCK__O_LARGEFILE_as_number(self):
     self.assertEquals(
                          flags_number("O_RDONLY|O_NONBLOCK|O_LARGEFILE"), 
                          34816
                      )