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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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