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# Copyright 2018 Alan Rominger <arominge@redhat.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
from __future__ import annotations
import unittest
from ansible.inventory.group import Group
from ansible.inventory.host import Host
from ansible.errors import AnsibleError
class TestGroup(unittest.TestCase):
def test_depth_update(self):
A = Group('A')
B = Group('B')
Z = Group('Z')
A.add_child_group(B)
A.add_child_group(Z)
self.assertEqual(A.depth, 0)
self.assertEqual(Z.depth, 1)
self.assertEqual(B.depth, 1)
def test_depth_update_dual_branches(self):
alpha = Group('alpha')
A = Group('A')
alpha.add_child_group(A)
B = Group('B')
A.add_child_group(B)
Z = Group('Z')
alpha.add_child_group(Z)
beta = Group('beta')
B.add_child_group(beta)
Z.add_child_group(beta)
self.assertEqual(alpha.depth, 0) # apex
self.assertEqual(beta.depth, 3) # alpha -> A -> B -> beta
omega = Group('omega')
omega.add_child_group(alpha)
# verify that both paths are traversed to get the max depth value
self.assertEqual(B.depth, 3) # omega -> alpha -> A -> B
self.assertEqual(beta.depth, 4) # B -> beta
def test_depth_recursion(self):
A = Group('A')
B = Group('B')
A.add_child_group(B)
# hypothetical of adding B as child group to A
A.parent_groups.append(B)
B.child_groups.append(A)
# can't update depths of groups, because of loop
with self.assertRaises(AnsibleError):
B._check_children_depth()
def test_loop_detection(self):
A = Group('A')
B = Group('B')
C = Group('C')
A.add_child_group(B)
B.add_child_group(C)
with self.assertRaises(AnsibleError):
C.add_child_group(A)
def test_direct_host_ordering(self):
"""Hosts are returned in order they are added
"""
group = Group('A')
# host names not added in alphabetical order
host_name_list = ['z', 'b', 'c', 'a', 'p', 'q']
expected_hosts = []
for host_name in host_name_list:
h = Host(host_name)
group.add_host(h)
expected_hosts.append(h)
assert group.get_hosts() == expected_hosts
def test_sub_group_host_ordering(self):
"""With multiple nested groups, asserts that hosts are returned
in deterministic order
"""
top_group = Group('A')
expected_hosts = []
for name in ['z', 'b', 'c', 'a', 'p', 'q']:
child = Group('group_{0}'.format(name))
top_group.add_child_group(child)
host = Host('host_{0}'.format(name))
child.add_host(host)
expected_hosts.append(host)
assert top_group.get_hosts() == expected_hosts
def test_populates_descendant_hosts(self):
A = Group('A')
B = Group('B')
C = Group('C')
h = Host('h')
C.add_host(h)
A.add_child_group(B) # B is child of A
B.add_child_group(C) # C is descendant of A
A.add_child_group(B)
self.assertEqual(set(h.groups), set([C, B, A]))
h2 = Host('h2')
C.add_host(h2)
self.assertEqual(set(h2.groups), set([C, B, A]))
def test_ancestor_example(self):
# see docstring for Group._walk_relationship
groups = {}
for name in ['A', 'B', 'C', 'D', 'E', 'F']:
groups[name] = Group(name)
# first row
groups['A'].add_child_group(groups['D'])
groups['B'].add_child_group(groups['D'])
groups['B'].add_child_group(groups['E'])
groups['C'].add_child_group(groups['D'])
# second row
groups['D'].add_child_group(groups['E'])
groups['D'].add_child_group(groups['F'])
groups['E'].add_child_group(groups['F'])
self.assertEqual(
set(groups['F'].get_ancestors()),
set([
groups['A'], groups['B'], groups['C'], groups['D'], groups['E']
])
)
def test_ancestors_recursive_loop_safe(self):
'''
The get_ancestors method may be referenced before circular parenting
checks, so the method is expected to be stable even with loops
'''
A = Group('A')
B = Group('B')
A.parent_groups.append(B)
B.parent_groups.append(A)
# finishes in finite time
self.assertEqual(A.get_ancestors(), set([A, B]))
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