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from django.db import connection
from django.db.models import CharField
from django.db.models.functions import SHA1
from django.test import TestCase
from django.test.utils import register_lookup
from ..models import Author
class SHA1Tests(TestCase):
@classmethod
def setUpTestData(cls):
Author.objects.bulk_create([
Author(alias='John Smith'),
Author(alias='Jordan Élena'),
Author(alias='皇帝'),
Author(alias=''),
Author(alias=None),
])
def test_basic(self):
authors = Author.objects.annotate(
sha1_alias=SHA1('alias'),
).values_list('sha1_alias', flat=True).order_by('pk')
self.assertSequenceEqual(
authors,
[
'e61a3587b3f7a142b8c7b9263c82f8119398ecb7',
'0781e0745a2503e6ded05ed5bc554c421d781b0c',
'198d15ea139de04060caf95bc3e0ec5883cba881',
'da39a3ee5e6b4b0d3255bfef95601890afd80709',
'da39a3ee5e6b4b0d3255bfef95601890afd80709'
if connection.features.interprets_empty_strings_as_nulls else None,
],
)
def test_transform(self):
with register_lookup(CharField, SHA1):
authors = Author.objects.filter(
alias__sha1='e61a3587b3f7a142b8c7b9263c82f8119398ecb7',
).values_list('alias', flat=True)
self.assertSequenceEqual(authors, ['John Smith'])
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