def test_delete_parent(self):
trekA = TrekFactory(name=u"A")
trekB = TrekFactory(name=u"B")
trekC = TrekFactory(name=u"C")
OrderedTrekChild(parent=trekB, child=trekA, order=1).save()
OrderedTrekChild(parent=trekC, child=trekA, order=2).save()
self.assertTrue(OrderedTrekChild.objects.filter(parent=trekB).exists())
self.assertQuerysetEqual(trekA.parents, ['<Trek: B>', '<Trek: C>'],
ordered=False)
self.assertQuerysetEqual(trekB.children, ['<Trek: A>'])
self.assertQuerysetEqual(trekC.children, ['<Trek: A>'])
self.assertEqual(trekA.parents_id, [trekB.id, trekC.id])
self.assertEqual(list(trekB.children_id), [trekA.id])
self.assertEqual(list(trekC.children_id), [trekA.id])
trekB.delete()
self.assertEqual(trekA.previous_id_for(trekC), None)
self.assertEqual(trekA.next_id_for(trekC), None)
self.assertEqual(trekA.next_id, {trekC.id: None})
self.assertEqual(trekA.previous_id, {trekC.id: None})
self.assertFalse(
OrderedTrekChild.objects.filter(parent=trekB).exists())
self.assertQuerysetEqual(trekA.parents, ['<Trek: C>'])
self.assertQuerysetEqual(trekC.children, ['<Trek: A>'])
self.assertEqual(trekA.parents_id, [trekC.id])
self.assertEqual(list(trekC.children_id), [trekA.id])
def test_delete_parent(self):
trekA = TrekFactory(name=u"A")
trekB = TrekFactory(name=u"B")
trekC = TrekFactory(name=u"C")
OrderedTrekChild(parent=trekB, child=trekA, order=1).save()
OrderedTrekChild(parent=trekC, child=trekA, order=2).save()
self.assertTrue(OrderedTrekChild.objects.filter(parent=trekB).exists())
self.assertQuerysetEqual(trekA.parents, ['<Trek: B>', '<Trek: C>'], ordered=False)
self.assertQuerysetEqual(trekB.children, ['<Trek: A>'])
self.assertQuerysetEqual(trekC.children, ['<Trek: A>'])
self.assertEqual(trekA.parents_id, [trekB.id, trekC.id])
self.assertEqual(list(trekB.children_id), [trekA.id])
self.assertEqual(list(trekC.children_id), [trekA.id])
trekB.delete()
self.assertEqual(trekA.previous_id_for(trekC), None)
self.assertEqual(trekA.next_id_for(trekC), None)
self.assertEqual(trekA.next_id, {trekC.id: None})
self.assertEqual(trekA.previous_id, {trekC.id: None})
self.assertFalse(OrderedTrekChild.objects.filter(parent=trekB).exists())
self.assertQuerysetEqual(trekA.parents, ['<Trek: C>'])
self.assertQuerysetEqual(trekC.children, ['<Trek: A>'])
self.assertEqual(trekA.parents_id, [trekC.id])
self.assertEqual(list(trekC.children_id), [trekA.id])
