def test_line_for_gaps(self):

        # __doc__ (as of 2008-06-25) for pygame.draw.line:

          # pygame.draw.line(Surface, color, start_pos, end_pos, width=1): return Rect
          # draw a straight line segment

        # This checks bug Thick Line Bug #448

        def surrounded_pixels_are_white(p):
            x, y = p
            self.assertEqual(surf.get_at((x+1, y)), (255, 255, 255, 255))
            self.assertEqual(surf.get_at((x, y+1)), (255, 255, 255, 255))
            self.assertEqual(surf.get_at((x-1, y)), (255, 255, 255, 255))
            self.assertEqual(surf.get_at((x, y-1)), (255, 255, 255, 255))
            self.assertEqual(surf.get_at((x+1, y+1)), (255, 255, 255, 255))
            self.assertEqual(surf.get_at((x+1, y-1)), (255, 255, 255, 255))
            self.assertEqual(surf.get_at((x-1, y+1)), (255, 255, 255, 255))
            self.assertEqual(surf.get_at((x-1, y+1)), (255, 255, 255, 255))


        surf = pygame.Surface((200, 200), pygame.SRCALPHA)

        surf.fill((0, 0, 0))
        pygame.draw.line(surf, (255, 255, 255), (50, 50), (140, 0), 30)
        pixel = (51, 49)
        self.assertEqual(surf.get_at(pixel), (255, 255, 255, 255))
        surrounded_pixels_are_white(pixel)

        surf.fill((0, 0, 0))
        pygame.draw.line(surf, (255, 255, 255), (50, 50), (0, 120), 30)
        pixel = (49, 51)
        self.assertEqual(surf.get_at(pixel), (255, 255, 255, 255))
        surrounded_pixels_are_white(pixel)

        surf.fill((0, 0, 0))
        pygame.draw.line(surf, (255, 255, 255), (50, 50), (199, 198), 30)
        pixel = (51, 52)
        self.assertEqual(surf.get_at(pixel), (255, 255, 255, 255))
        surrounded_pixels_are_white(pixel)