def test_get_yardline_should_return_yard_line_from_field_2(self):
        # Arrange
        field = PlayField().grid((400, 300))

        # Act & Assert
        self.assertEqual(0, field.get_yardline(0))
        self.assertEqual(15, field.get_yardline(45))
        self.assertEqual(50, field.get_yardline(150))
        self.assertEqual(90, field.get_yardline(270))
    def test_get_yardline_should_return_yard_line_from_field_1(self):
        # Arrange
        field = PlayField().grid((200, 200))

        # Act & Assert
        self.assertEqual(0, field.get_yardline(0))
        self.assertEqual(10, field.get_yardline(20))
        self.assertEqual(50, field.get_yardline(100))
        self.assertEqual(70, field.get_yardline(140))
        self.assertEqual(95, field.get_yardline(190))