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129 lines
5.0 KiB
Python
129 lines
5.0 KiB
Python
"""
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The tests are shared with contenttypes_tests and so shouldn't import or
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reference any models directly. Subclasses should inherit django.test.TestCase.
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"""
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from operator import attrgetter
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class BaseOrderWithRespectToTests:
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databases = {"default", "other"}
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# Hook to allow subclasses to run these tests with alternate models.
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Answer = None
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Post = None
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Question = None
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@classmethod
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def setUpTestData(cls):
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cls.q1 = cls.Question.objects.create(
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text="Which Beatle starts with the letter 'R'?"
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)
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cls.Answer.objects.create(text="John", question=cls.q1)
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cls.Answer.objects.create(text="Paul", question=cls.q1)
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cls.Answer.objects.create(text="George", question=cls.q1)
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cls.Answer.objects.create(text="Ringo", question=cls.q1)
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def test_default_to_insertion_order(self):
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# Answers will always be ordered in the order they were inserted.
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self.assertQuerySetEqual(
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self.q1.answer_set.all(),
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[
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"John",
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"Paul",
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"George",
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"Ringo",
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],
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attrgetter("text"),
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)
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def test_previous_and_next_in_order(self):
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# We can retrieve the answers related to a particular object, in the
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# order they were created, once we have a particular object.
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a1 = self.q1.answer_set.all()[0]
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self.assertEqual(a1.text, "John")
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self.assertEqual(a1.get_next_in_order().text, "Paul")
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a2 = list(self.q1.answer_set.all())[-1]
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self.assertEqual(a2.text, "Ringo")
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self.assertEqual(a2.get_previous_in_order().text, "George")
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def test_item_ordering(self):
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# We can retrieve the ordering of the queryset from a particular item.
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a1 = self.q1.answer_set.all()[1]
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id_list = [o.pk for o in self.q1.answer_set.all()]
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self.assertSequenceEqual(a1.question.get_answer_order(), id_list)
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# It doesn't matter which answer we use to check the order, it will
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# always be the same.
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a2 = self.Answer.objects.create(text="Number five", question=self.q1)
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self.assertEqual(
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list(a1.question.get_answer_order()), list(a2.question.get_answer_order())
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)
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def test_set_order_unrelated_object(self):
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"""An answer that's not related isn't updated."""
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q = self.Question.objects.create(text="other")
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a = self.Answer.objects.create(text="Number five", question=q)
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self.q1.set_answer_order([o.pk for o in self.q1.answer_set.all()] + [a.pk])
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self.assertEqual(self.Answer.objects.get(pk=a.pk)._order, 0)
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def test_change_ordering(self):
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# The ordering can be altered
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a = self.Answer.objects.create(text="Number five", question=self.q1)
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# Swap the last two items in the order list
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id_list = [o.pk for o in self.q1.answer_set.all()]
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x = id_list.pop()
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id_list.insert(-1, x)
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# By default, the ordering is different from the swapped version
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self.assertNotEqual(list(a.question.get_answer_order()), id_list)
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# Change the ordering to the swapped version -
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# this changes the ordering of the queryset.
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a.question.set_answer_order(id_list)
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self.assertQuerySetEqual(
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self.q1.answer_set.all(),
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["John", "Paul", "George", "Number five", "Ringo"],
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attrgetter("text"),
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)
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def test_recursive_ordering(self):
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p1 = self.Post.objects.create(title="1")
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p2 = self.Post.objects.create(title="2")
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p1_1 = self.Post.objects.create(title="1.1", parent=p1)
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p1_2 = self.Post.objects.create(title="1.2", parent=p1)
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self.Post.objects.create(title="2.1", parent=p2)
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p1_3 = self.Post.objects.create(title="1.3", parent=p1)
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self.assertSequenceEqual(p1.get_post_order(), [p1_1.pk, p1_2.pk, p1_3.pk])
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def test_delete_and_insert(self):
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q1 = self.Question.objects.create(text="What is your favorite color?")
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q2 = self.Question.objects.create(text="What color is it?")
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a1 = self.Answer.objects.create(text="Blue", question=q1)
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a2 = self.Answer.objects.create(text="Red", question=q1)
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a3 = self.Answer.objects.create(text="Green", question=q1)
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a4 = self.Answer.objects.create(text="Yellow", question=q1)
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self.assertSequenceEqual(q1.answer_set.all(), [a1, a2, a3, a4])
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a3.question = q2
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a3.save()
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a1.delete()
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new_answer = self.Answer.objects.create(text="Black", question=q1)
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self.assertSequenceEqual(q1.answer_set.all(), [a2, a4, new_answer])
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def test_database_routing(self):
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class WriteToOtherRouter:
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def db_for_write(self, model, **hints):
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return "other"
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with self.settings(DATABASE_ROUTERS=[WriteToOtherRouter()]):
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with (
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self.assertNumQueries(0, using="default"),
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self.assertNumQueries(
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1,
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using="other",
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),
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):
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self.q1.set_answer_order([3, 1, 2, 4])
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