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29 lines
834 B
Python
29 lines
834 B
Python
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from datetime import datetime
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from time import sleep
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from django.contrib.postgres.functions import TransactionNow
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from . import PostgreSQLTestCase
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from .models import NowTestModel
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class TestTransactionNow(PostgreSQLTestCase):
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def test_transaction_now(self):
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"""
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The test case puts everything under a transaction, so two models
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updated with a short gap should have the same time.
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"""
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m1 = NowTestModel.objects.create()
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m2 = NowTestModel.objects.create()
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NowTestModel.objects.filter(id=m1.id).update(when=TransactionNow())
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sleep(0.1)
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NowTestModel.objects.filter(id=m2.id).update(when=TransactionNow())
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m1.refresh_from_db()
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m2.refresh_from_db()
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self.assertIsInstance(m1.when, datetime)
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self.assertEqual(m1.when, m2.when)
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