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from django.test import TestCase
from django.db.models import F
from ..models import Number
class BitShiftTest(TestCase):
@classmethod
def setUpTestData(cls):
cls.n = Number.objects.create(integer=42, float=15.5)
cls.n1 = Number.objects.create(integer=-42, float=-15.5)
def test_lefthand_bitwise_left_shift_operator_check(self):
Number.objects.update(integer=F("integer").bitleftshift(3))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 336)
self.assertEqual(Number.objects.get(pk=self.n1.pk).integer, -336)
def test_lefthand_bitwise_right_shift_operator_check(self):
Number.objects.update(integer=F("integer").bitrightshift(3))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 5)
self.assertEqual(Number.objects.get(pk=self.n1.pk).integer, -6)
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