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309 | import re
from django.test import TestCase
from mptt.exceptions import InvalidMove
from mptt.tests import doctests
from mptt.tests.models import Category, Genre
def get_tree_details(nodes):
"""Creates pertinent tree details for the given list of nodes."""
opts = nodes[0]._meta
return '\n'.join(['%s %s %s %s %s %s' %
(n.pk, getattr(n, '%s_id' % opts.parent_attr) or '-',
getattr(n, opts.tree_id_attr), getattr(n, opts.level_attr),
getattr(n, opts.left_attr), getattr(n, opts.right_attr))
for n in nodes])
leading_whitespace_re = re.compile(r'^\s+', re.MULTILINE)
def tree_details(text):
"""
Trims leading whitespace from the given text specifying tree details
so triple-quoted strings can be used to provide tree details in a
readable format (says who?), to be compared with the result of using
the ``get_tree_details`` function.
"""
return leading_whitespace_re.sub('', text)
# genres.json defines the following tree structure
#
# 1 - 1 0 1 16 action
# 2 1 1 1 2 9 +-- platformer
# 3 2 1 2 3 4 | |-- platformer_2d
# 4 2 1 2 5 6 | |-- platformer_3d
# 5 2 1 2 7 8 | +-- platformer_4d
# 6 1 1 1 10 15 +-- shmup
# 7 6 1 2 11 12 |-- shmup_vertical
# 8 6 1 2 13 14 +-- shmup_horizontal
# 9 - 2 0 1 6 rpg
# 10 9 2 1 2 3 |-- arpg
# 11 9 2 1 4 5 +-- trpg
class ReparentingTestCase(TestCase):
"""
Test that trees are in the appropriate state after reparenting and
that reparented items have the correct tree attributes defined,
should they be required for use after a save.
"""
fixtures = ['genres.json']
def test_new_root_from_subtree(self):
shmup = Genre.objects.get(id=6)
shmup.parent = None
shmup.save()
self.assertEqual(get_tree_details([shmup]), '6 - 3 0 1 6')
self.assertEqual(get_tree_details(Genre.tree.all()),
tree_details("""1 - 1 0 1 10
2 1 1 1 2 9
3 2 1 2 3 4
4 2 1 2 5 6
5 2 1 2 7 8
9 - 2 0 1 6
10 9 2 1 2 3
11 9 2 1 4 5
6 - 3 0 1 6
7 6 3 1 2 3
8 6 3 1 4 5"""))
def test_new_root_from_leaf_with_siblings(self):
platformer_2d = Genre.objects.get(id=3)
platformer_2d.parent = None
platformer_2d.save()
self.assertEqual(get_tree_details([platformer_2d]), '3 - 3 0 1 2')
self.assertEqual(get_tree_details(Genre.tree.all()),
tree_details("""1 - 1 0 1 14
2 1 1 1 2 7
4 2 1 2 3 4
5 2 1 2 5 6
6 1 1 1 8 13
7 6 1 2 9 10
8 6 1 2 11 12
9 - 2 0 1 6
10 9 2 1 2 3
11 9 2 1 4 5
3 - 3 0 1 2"""))
def test_new_child_from_root(self):
action = Genre.objects.get(id=1)
rpg = Genre.objects.get(id=9)
action.parent = rpg
action.save()
self.assertEqual(get_tree_details([action]), '1 9 2 1 6 21')
self.assertEqual(get_tree_details(Genre.tree.all()),
tree_details("""9 - 2 0 1 22
10 9 2 1 2 3
11 9 2 1 4 5
1 9 2 1 6 21
2 1 2 2 7 14
3 2 2 3 8 9
4 2 2 3 10 11
5 2 2 3 12 13
6 1 2 2 15 20
7 6 2 3 16 17
8 6 2 3 18 19"""))
def test_move_leaf_to_other_tree(self):
shmup_horizontal = Genre.objects.get(id=8)
rpg = Genre.objects.get(id=9)
shmup_horizontal.parent = rpg
shmup_horizontal.save()
self.assertEqual(get_tree_details([shmup_horizontal]), '8 9 2 1 6 7')
self.assertEqual(get_tree_details(Genre.tree.all()),
tree_details("""1 - 1 0 1 14
2 1 1 1 2 9
3 2 1 2 3 4
4 2 1 2 5 6
5 2 1 2 7 8
6 1 1 1 10 13
7 6 1 2 11 12
9 - 2 0 1 8
10 9 2 1 2 3
11 9 2 1 4 5
8 9 2 1 6 7"""))
def test_move_subtree_to_other_tree(self):
shmup = Genre.objects.get(id=6)
trpg = Genre.objects.get(id=11)
shmup.parent = trpg
shmup.save()
self.assertEqual(get_tree_details([shmup]), '6 11 2 2 5 10')
self.assertEqual(get_tree_details(Genre.tree.all()),
tree_details("""1 - 1 0 1 10
2 1 1 1 2 9
3 2 1 2 3 4
4 2 1 2 5 6
5 2 1 2 7 8
9 - 2 0 1 12
10 9 2 1 2 3
11 9 2 1 4 11
6 11 2 2 5 10
7 6 2 3 6 7
8 6 2 3 8 9"""))
def test_move_child_up_level(self):
shmup_horizontal = Genre.objects.get(id=8)
action = Genre.objects.get(id=1)
shmup_horizontal.parent = action
shmup_horizontal.save()
self.assertEqual(get_tree_details([shmup_horizontal]), '8 1 1 1 14 15')
self.assertEqual(get_tree_details(Genre.tree.all()),
tree_details("""1 - 1 0 1 16
2 1 1 1 2 9
3 2 1 2 3 4
4 2 1 2 5 6
5 2 1 2 7 8
6 1 1 1 10 13
7 6 1 2 11 12
8 1 1 1 14 15
9 - 2 0 1 6
10 9 2 1 2 3
11 9 2 1 4 5"""))
def test_move_subtree_down_level(self):
shmup = Genre.objects.get(id=6)
platformer = Genre.objects.get(id=2)
shmup.parent = platformer
shmup.save()
self.assertEqual(get_tree_details([shmup]), '6 2 1 2 9 14')
self.assertEqual(get_tree_details(Genre.tree.all()),
tree_details("""1 - 1 0 1 16
2 1 1 1 2 15
3 2 1 2 3 4
4 2 1 2 5 6
5 2 1 2 7 8
6 2 1 2 9 14
7 6 1 3 10 11
8 6 1 3 12 13
9 - 2 0 1 6
10 9 2 1 2 3
11 9 2 1 4 5"""))
def test_invalid_moves(self):
# A node may not be made a child of itself
action = Genre.objects.get(id=1)
action.parent = action
platformer = Genre.objects.get(id=2)
platformer.parent = platformer
self.assertRaises(InvalidMove, action.save)
self.assertRaises(InvalidMove, platformer.save)
# A node may not be made a child of any of its descendants
platformer_4d = Genre.objects.get(id=5)
action.parent = platformer_4d
platformer.parent = platformer_4d
self.assertRaises(InvalidMove, action.save)
self.assertRaises(InvalidMove, platformer.save)
# New parent is still set when an error occurs
self.assertEquals(action.parent, platformer_4d)
self.assertEquals(platformer.parent, platformer_4d)
# categories.json defines the following tree structure:
#
# 1 - 1 0 1 20 games
# 2 1 1 1 2 7 +-- wii
# 3 2 1 2 3 4 | |-- wii_games
# 4 2 1 2 5 6 | +-- wii_hardware
# 5 1 1 1 8 13 +-- xbox360
# 6 5 1 2 9 10 | |-- xbox360_games
# 7 5 1 2 11 12 | +-- xbox360_hardware
# 8 1 1 1 14 19 +-- ps3
# 9 8 1 2 15 16 |-- ps3_games
# 10 8 1 2 17 18 +-- ps3_hardware
class DeletionTestCase(TestCase):
"""
Tests that the tree structure is maintained appropriately in various
deletion scenrios.
"""
fixtures = ['categories.json']
def test_delete_root_node(self):
# Add a few other roots to verify that they aren't affected
Category(name='Preceding root').insert_at(Category.objects.get(id=1),
'left', commit=True)
Category(name='Following root').insert_at(Category.objects.get(id=1),
'right', commit=True)
self.assertEqual(get_tree_details(Category.tree.all()),
tree_details("""11 - 1 0 1 2
1 - 2 0 1 20
2 1 2 1 2 7
3 2 2 2 3 4
4 2 2 2 5 6
5 1 2 1 8 13
6 5 2 2 9 10
7 5 2 2 11 12
8 1 2 1 14 19
9 8 2 2 15 16
10 8 2 2 17 18
12 - 3 0 1 2"""),
'Setup for test produced unexpected result')
Category.objects.get(id=1).delete()
self.assertEqual(get_tree_details(Category.tree.all()),
tree_details("""11 - 1 0 1 2
12 - 3 0 1 2"""))
def test_delete_last_node_with_siblings(self):
Category.objects.get(id=9).delete()
self.assertEqual(get_tree_details(Category.tree.all()),
tree_details("""1 - 1 0 1 18
2 1 1 1 2 7
3 2 1 2 3 4
4 2 1 2 5 6
5 1 1 1 8 13
6 5 1 2 9 10
7 5 1 2 11 12
8 1 1 1 14 17
10 8 1 2 15 16"""))
def test_delete_last_node_with_descendants(self):
Category.objects.get(id=8).delete()
self.assertEqual(get_tree_details(Category.tree.all()),
tree_details("""1 - 1 0 1 14
2 1 1 1 2 7
3 2 1 2 3 4
4 2 1 2 5 6
5 1 1 1 8 13
6 5 1 2 9 10
7 5 1 2 11 12"""))
def test_delete_node_with_siblings(self):
Category.objects.get(id=6).delete()
self.assertEqual(get_tree_details(Category.tree.all()),
tree_details("""1 - 1 0 1 18
2 1 1 1 2 7
3 2 1 2 3 4
4 2 1 2 5 6
5 1 1 1 8 11
7 5 1 2 9 10
8 1 1 1 12 17
9 8 1 2 13 14
10 8 1 2 15 16"""))
def test_delete_node_with_descendants_and_siblings(self):
"""
Regression test for Issue 23 - we used to use pre_delete, which
resulted in tree cleanup being performed for every node being
deleted, rather than just the node on which ``delete()`` was
called.
"""
Category.objects.get(id=5).delete()
self.assertEqual(get_tree_details(Category.tree.all()),
tree_details("""1 - 1 0 1 14
2 1 1 1 2 7
3 2 1 2 3 4
4 2 1 2 5 6
8 1 1 1 8 13
9 8 1 2 9 10
10 8 1 2 11 12"""))
class IntraTreeMovementTestCase(TestCase):
pass
class InterTreeMovementTestCase(TestCase):
pass
class PositionedInsertionTestCase(TestCase):
pass
|
