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import unittest
from django.db import NotSupportedError, connection
from django.db.models import CharField
from django.db.models.functions import SHA224
from django.test import TestCase
from django.test.utils import register_lookup
from ..models import Author
class SHA224Tests(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(
sha224_alias=SHA224("alias"),
)
.values_list("sha224_alias", flat=True)
.order_by("pk")
)
self.assertSequenceEqual(
authors,
[
"a61303c220731168452cb6acf3759438b1523e768f464e3704e12f70",
"2297904883e78183cb118fc3dc21a610d60daada7b6ebdbc85139f4d",
"eba942746e5855121d9d8f79e27dfdebed81adc85b6bf41591203080",
"d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f",
"d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f"
if connection.features.interprets_empty_strings_as_nulls
else None,
],
)
def test_transform(self):
with register_lookup(CharField, SHA224):
authors = Author.objects.filter(
alias__sha224=(
"a61303c220731168452cb6acf3759438b1523e768f464e3704e12f70"
),
).values_list("alias", flat=True)
self.assertSequenceEqual(authors, ["John Smith"])
@unittest.skipUnless(
connection.vendor == "oracle", "Oracle doesn't support SHA224."
)
def test_unsupported(self):
msg = "SHA224 is not supported on Oracle."
with self.assertRaisesMessage(NotSupportedError, msg):
Author.objects.annotate(sha224_alias=SHA224("alias")).first()
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