WikiENS/wiki_groups/tests.py
2019-12-20 17:04:32 +01:00

154 lines
4.8 KiB
Python

from django.contrib.auth import get_user_model
from django.contrib.auth.models import Group
from django.test import TestCase
from wiki_groups.models import WikiGroup
User = get_user_model()
def create_user(username):
return User.objects.create_user(username=username)
def create_group(name, with_users=None):
"""Create a new WikiGroup, initialised with some new Users."""
django_group = Group.objects.create(name=name)
wiki_group = WikiGroup.objects.create(django_group=django_group)
if with_users is not None:
for username in with_users:
u = create_user(username)
wiki_group.users.add(u)
return wiki_group
class TestPropagation(TestCase):
"""Test that WikiGroup changes are correctly propagated to normal Django groups."""
def test_tree(self):
"""Simple case: tree-shaped group structure."""
a = create_group("group_a", with_users=["a1", "a2"])
b = create_group("group_b", with_users=["b1", "b2"])
c = create_group("group_c", with_users=["c1", "c2"])
a.includes_groups.set([b, c])
self.assertQuerysetEqual(
a.django_group.user_set.all(), map(repr, User.objects.all()), ordered=False,
)
self.assertQuerysetEqual(
b.django_group.user_set.all(),
["b1", "b2"],
ordered=False,
transform=lambda u: u.username,
)
self.assertQuerysetEqual(
c.django_group.user_set.all(),
["c1", "c2"],
ordered=False,
transform=lambda u: u.username,
)
def test_diamond(self):
"""Simple case: diamond-shaped group structure."""
a = create_group("group_a", with_users=["a1", "a2"])
b = create_group("group_b", with_users=["b1", "b2"])
c = create_group("group_c", with_users=["c1", "c2"])
d = create_group("group_d", with_users=["d1", "d2"])
a.includes_groups.set([b, c])
b.includes_groups.add(d)
c.includes_groups.add(d)
self.assertQuerysetEqual(
a.django_group.user_set.all(), map(repr, User.objects.all()), ordered=False,
)
self.assertQuerysetEqual(
b.django_group.user_set.all(),
["b1", "b2", "d1", "d2"],
ordered=False,
transform=lambda u: u.username,
)
self.assertQuerysetEqual(
c.django_group.user_set.all(),
["c1", "c2", "d1", "d2"],
ordered=False,
transform=lambda u: u.username,
)
self.assertQuerysetEqual(
d.django_group.user_set.all(),
["d1", "d2"],
ordered=False,
transform=lambda u: u.username,
)
def test_removal(self):
"""Test propagation of user removal."""
a = create_group("group_a", with_users=["a1", "a2"])
b = create_group("group_b", with_users=["b1", "b2"])
a.includes_groups.add(b)
self.assertQuerysetEqual(
a.django_group.user_set.all(),
["a1", "a2", "b1", "b2"],
ordered=False,
transform=lambda u: u.username,
)
b.users.remove(User.objects.get(username="b1"))
self.assertQuerysetEqual(
a.django_group.user_set.all(),
["a1", "a2", "b2"],
ordered=False,
transform=lambda u: u.username,
)
self.assertQuerysetEqual(
b.django_group.user_set.all(), ["b2"], transform=lambda u: u.username
)
def test_update(self):
"""Test structure updates propagation."""
a = create_group("group_a")
b = create_group("group_b")
c = create_group("group_c")
a.includes_groups.add(b)
b.includes_groups.add(c)
# Update: set a's children to [c]
# Before update: a --> b --> c
# After update: b --> c <-- a
a.includes_groups.set([c])
self.assertQuerysetEqual(a.includes_groups.all(), [repr(c)])
self.assertQuerysetEqual(b.includes_groups.all(), [repr(c)])
self.assertQuerysetEqual(c.includes_groups.all(), [])
class TestCycleDetection(TestCase):
"""Test the cycle detection procedure."""
def test_loop(self):
"""Test loops (a --> a) detection."""
a = create_group("group_a")
in_cycle = a.group_in_cycle(with_children=[a])
self.assertEqual(in_cycle, a)
in_cycle = a.group_in_cycle(with_children=[a, a, a])
self.assertEqual(in_cycle, a)
def test_trivial_cycle(self):
"""Test trivial cycle detection (a --> b --> c --> a)."""
a = create_group("group_a")
b = create_group("group_b")
c = create_group("group_c")
a.includes_groups.add(b)
b.includes_groups.add(c)
in_cycle = c.group_in_cycle(with_children=[a])
self.assertIsNotNone(in_cycle)