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3904b74a3f
Thanks Clueless for the initial patch. Note that unittest has been purposely left out (external package only used by Python 2.6).
67 lines
2.4 KiB
Python
67 lines
2.4 KiB
Python
from __future__ import absolute_import
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from datetime import date
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import traceback
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from django.db import IntegrityError
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from django.test import TestCase
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from .models import Person, ManualPrimaryKeyTest
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class GetOrCreateTests(TestCase):
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def test_get_or_create(self):
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p = Person.objects.create(
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first_name='John', last_name='Lennon', birthday=date(1940, 10, 9)
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)
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p, created = Person.objects.get_or_create(
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first_name="John", last_name="Lennon", defaults={
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"birthday": date(1940, 10, 9)
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}
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)
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self.assertFalse(created)
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self.assertEqual(Person.objects.count(), 1)
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p, created = Person.objects.get_or_create(
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first_name='George', last_name='Harrison', defaults={
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'birthday': date(1943, 2, 25)
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}
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)
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self.assertTrue(created)
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self.assertEqual(Person.objects.count(), 2)
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# If we execute the exact same statement, it won't create a Person.
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p, created = Person.objects.get_or_create(
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first_name='George', last_name='Harrison', defaults={
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'birthday': date(1943, 2, 25)
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}
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)
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self.assertFalse(created)
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self.assertEqual(Person.objects.count(), 2)
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# If you don't specify a value or default value for all required
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# fields, you will get an error.
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self.assertRaises(IntegrityError,
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Person.objects.get_or_create, first_name="Tom", last_name="Smith"
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)
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# If you specify an existing primary key, but different other fields,
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# then you will get an error and data will not be updated.
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m = ManualPrimaryKeyTest.objects.create(id=1, data="Original")
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self.assertRaises(IntegrityError,
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ManualPrimaryKeyTest.objects.get_or_create, id=1, data="Different"
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)
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self.assertEqual(ManualPrimaryKeyTest.objects.get(id=1).data, "Original")
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# get_or_create should raise IntegrityErrors with the full traceback.
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# This is tested by checking that a known method call is in the traceback.
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# We cannot use assertRaises/assertRaises here because we need to inspect
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# the actual traceback. Refs #16340.
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try:
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ManualPrimaryKeyTest.objects.get_or_create(id=1, data="Different")
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except IntegrityError as e:
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formatted_traceback = traceback.format_exc()
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self.assertIn('obj.save', formatted_traceback)
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