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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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