author | Nishanth Amuluru <nishanth@fossee.in> |
Sat, 08 Jan 2011 11:20:57 +0530 | |
changeset 69 | c6bca38c1cbf |
permissions | -rw-r--r-- |
69
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Nishanth Amuluru <nishanth@fossee.in>
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from operator import attrgetter |
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from django.test import TestCase |
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from models import Post, Question, Answer |
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class OrderWithRespectToTests(TestCase): |
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def test_basic(self): |
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q1 = Question.objects.create(text="Which Beatle starts with the letter 'R'?") |
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q2 = Question.objects.create(text="What is your name?") |
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Answer.objects.create(text="John", question=q1) |
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Answer.objects.create(text="Jonno", question=q2) |
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Answer.objects.create(text="Paul", question=q1) |
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Answer.objects.create(text="Paulo", question=q2) |
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Answer.objects.create(text="George", question=q1) |
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Answer.objects.create(text="Ringo", question=q1) |
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# The answers will always be ordered in the order they were inserted. |
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self.assertQuerysetEqual( |
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q1.answer_set.all(), [ |
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"John", "Paul", "George", "Ringo", |
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], |
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attrgetter("text"), |
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) |
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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 = Answer.objects.filter(question=q1)[0] |
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self.assertEqual(a1.text, "John") |
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a2 = a1.get_next_in_order() |
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self.assertEqual(a2.text, "Paul") |
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a4 = list(Answer.objects.filter(question=q1))[-1] |
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self.assertEqual(a4.text, "Ringo") |
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self.assertEqual(a4.get_previous_in_order().text, "George") |
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# Determining (and setting) the ordering for a particular item is also |
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# possible. |
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id_list = [o.pk for o in q1.answer_set.all()] |
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self.assertEqual(a2.question.get_answer_order(), id_list) |
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a5 = Answer.objects.create(text="Number five", question=q1) |
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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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self.assertEqual( |
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a2.question.get_answer_order(), a5.question.get_answer_order() |
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) |
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# The ordering can be altered: |
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id_list = [o.pk for o in 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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self.assertNotEqual(a5.question.get_answer_order(), id_list) |
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a5.question.set_answer_order(id_list) |
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self.assertQuerysetEqual( |
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q1.answer_set.all(), [ |
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"John", "Paul", "George", "Number five", "Ringo" |
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], |
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attrgetter("text") |
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) |
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def test_recursive_ordering(self): |
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p1 = Post.objects.create(title='1') |
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p2 = Post.objects.create(title='2') |
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p1_1 = Post.objects.create(title="1.1", parent=p1) |
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p1_2 = Post.objects.create(title="1.2", parent=p1) |
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p2_1 = Post.objects.create(title="2.1", parent=p2) |
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p1_3 = Post.objects.create(title="1.3", parent=p1) |
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self.assertEqual(p1.get_post_order(), [p1_1.pk, p1_2.pk, p1_3.pk]) |