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ansible/test/units/vars/test_variable_manager.py

306 lines
12 KiB
Python

# (c) 2012-2014, Michael DeHaan <michael.dehaan@gmail.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/>.
# Make coding more python3-ish
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import os
from units.compat import unittest
from unittest.mock import MagicMock, patch
from ansible.inventory.manager import InventoryManager
from ansible.module_utils.six import iteritems
from ansible.playbook.play import Play
from units.mock.loader import DictDataLoader
from units.mock.path import mock_unfrackpath_noop
from ansible.vars.manager import VariableManager
class TestVariableManager(unittest.TestCase):
def test_basic_manager(self):
fake_loader = DictDataLoader({})
mock_inventory = MagicMock()
v = VariableManager(loader=fake_loader, inventory=mock_inventory)
variables = v.get_vars(use_cache=False)
# Check var manager expected values, never check: ['omit', 'vars']
# FIXME: add the following ['ansible_version', 'ansible_playbook_python', 'groups']
for varname, value in (('playbook_dir', os.path.abspath('.')), ):
self.assertEqual(variables[varname], value)
def test_variable_manager_extra_vars(self):
fake_loader = DictDataLoader({})
extra_vars = dict(a=1, b=2, c=3)
mock_inventory = MagicMock()
v = VariableManager(loader=fake_loader, inventory=mock_inventory)
# override internal extra_vars loading
v._extra_vars = extra_vars
myvars = v.get_vars(use_cache=False)
for (key, val) in iteritems(extra_vars):
self.assertEqual(myvars.get(key), val)
def test_variable_manager_options_vars(self):
fake_loader = DictDataLoader({})
options_vars = dict(a=1, b=2, c=3)
mock_inventory = MagicMock()
v = VariableManager(loader=fake_loader, inventory=mock_inventory)
# override internal options_vars loading
v._extra_vars = options_vars
myvars = v.get_vars(use_cache=False)
for (key, val) in iteritems(options_vars):
self.assertEqual(myvars.get(key), val)
def test_variable_manager_play_vars(self):
fake_loader = DictDataLoader({})
mock_play = MagicMock()
mock_play.get_vars.return_value = dict(foo="bar")
mock_play.get_roles.return_value = []
mock_play.get_vars_files.return_value = []
mock_inventory = MagicMock()
v = VariableManager(loader=fake_loader, inventory=mock_inventory)
self.assertEqual(v.get_vars(play=mock_play, use_cache=False).get("foo"), "bar")
def test_variable_manager_play_vars_files(self):
fake_loader = DictDataLoader({
__file__: """
foo: bar
"""
})
mock_play = MagicMock()
mock_play.get_vars.return_value = dict()
mock_play.get_roles.return_value = []
mock_play.get_vars_files.return_value = [__file__]
mock_inventory = MagicMock()
v = VariableManager(inventory=mock_inventory, loader=fake_loader)
self.assertEqual(v.get_vars(play=mock_play, use_cache=False).get("foo"), "bar")
def test_variable_manager_task_vars(self):
# FIXME: BCS make this work
return
# pylint: disable=unreachable
fake_loader = DictDataLoader({})
mock_task = MagicMock()
mock_task._role = None
mock_task.loop = None
mock_task.get_vars.return_value = dict(foo="bar")
mock_task.get_include_params.return_value = dict()
mock_all = MagicMock()
mock_all.get_vars.return_value = {}
mock_all.get_file_vars.return_value = {}
mock_host = MagicMock()
mock_host.get.name.return_value = 'test01'
mock_host.get_vars.return_value = {}
mock_host.get_host_vars.return_value = {}
mock_inventory = MagicMock()
mock_inventory.hosts.get.return_value = mock_host
mock_inventory.hosts.get.name.return_value = 'test01'
mock_inventory.get_host.return_value = mock_host
mock_inventory.groups.__getitem__.return_value = mock_all
v = VariableManager(loader=fake_loader, inventory=mock_inventory)
self.assertEqual(v.get_vars(task=mock_task, use_cache=False).get("foo"), "bar")
@patch('ansible.playbook.role.definition.unfrackpath', mock_unfrackpath_noop)
def test_variable_manager_precedence(self):
# FIXME: this needs to be redone as dataloader is not the automatic source of data anymore
return
# pylint: disable=unreachable
# Tests complex variations and combinations of get_vars() with different
# objects to modify the context under which variables are merged.
# FIXME: BCS makethiswork
# return True
mock_inventory = MagicMock()
inventory1_filedata = """
[group2:children]
group1
[group1]
host1 host_var=host_var_from_inventory_host1
[group1:vars]
group_var = group_var_from_inventory_group1
[group2:vars]
group_var = group_var_from_inventory_group2
"""
fake_loader = DictDataLoader({
# inventory1
'/etc/ansible/inventory1': inventory1_filedata,
# role defaults_only1
'/etc/ansible/roles/defaults_only1/defaults/main.yml': """
default_var: "default_var_from_defaults_only1"
host_var: "host_var_from_defaults_only1"
group_var: "group_var_from_defaults_only1"
group_var_all: "group_var_all_from_defaults_only1"
extra_var: "extra_var_from_defaults_only1"
""",
'/etc/ansible/roles/defaults_only1/tasks/main.yml': """
- debug: msg="here i am"
""",
# role defaults_only2
'/etc/ansible/roles/defaults_only2/defaults/main.yml': """
default_var: "default_var_from_defaults_only2"
host_var: "host_var_from_defaults_only2"
group_var: "group_var_from_defaults_only2"
group_var_all: "group_var_all_from_defaults_only2"
extra_var: "extra_var_from_defaults_only2"
""",
})
inv1 = InventoryManager(loader=fake_loader, sources=['/etc/ansible/inventory1'])
v = VariableManager(inventory=mock_inventory, loader=fake_loader)
play1 = Play.load(dict(
hosts=['all'],
roles=['defaults_only1', 'defaults_only2'],
), loader=fake_loader, variable_manager=v)
# first we assert that the defaults as viewed as a whole are the merged results
# of the defaults from each role, with the last role defined "winning" when
# there is a variable naming conflict
res = v.get_vars(play=play1)
self.assertEqual(res['default_var'], 'default_var_from_defaults_only2')
# next, we assert that when vars are viewed from the context of a task within a
# role, that task will see its own role defaults before any other role's
blocks = play1.compile()
task = blocks[1].block[0]
res = v.get_vars(play=play1, task=task)
self.assertEqual(res['default_var'], 'default_var_from_defaults_only1')
# next we assert the precedence of inventory variables
v.set_inventory(inv1)
h1 = inv1.get_host('host1')
res = v.get_vars(play=play1, host=h1)
self.assertEqual(res['group_var'], 'group_var_from_inventory_group1')
self.assertEqual(res['host_var'], 'host_var_from_inventory_host1')
# next we test with group_vars/ files loaded
fake_loader.push("/etc/ansible/group_vars/all", """
group_var_all: group_var_all_from_group_vars_all
""")
fake_loader.push("/etc/ansible/group_vars/group1", """
group_var: group_var_from_group_vars_group1
""")
fake_loader.push("/etc/ansible/group_vars/group3", """
# this is a dummy, which should not be used anywhere
group_var: group_var_from_group_vars_group3
""")
fake_loader.push("/etc/ansible/host_vars/host1", """
host_var: host_var_from_host_vars_host1
""")
fake_loader.push("group_vars/group1", """
playbook_group_var: playbook_group_var
""")
fake_loader.push("host_vars/host1", """
playbook_host_var: playbook_host_var
""")
res = v.get_vars(play=play1, host=h1)
# self.assertEqual(res['group_var'], 'group_var_from_group_vars_group1')
# self.assertEqual(res['group_var_all'], 'group_var_all_from_group_vars_all')
# self.assertEqual(res['playbook_group_var'], 'playbook_group_var')
# self.assertEqual(res['host_var'], 'host_var_from_host_vars_host1')
# self.assertEqual(res['playbook_host_var'], 'playbook_host_var')
# add in the fact cache
v._fact_cache['host1'] = dict(fact_cache_var="fact_cache_var_from_fact_cache")
res = v.get_vars(play=play1, host=h1)
self.assertEqual(res['fact_cache_var'], 'fact_cache_var_from_fact_cache')
@patch('ansible.playbook.role.definition.unfrackpath', mock_unfrackpath_noop)
def test_variable_manager_role_vars_dependencies(self):
'''
Tests vars from role dependencies with duplicate dependencies.
'''
mock_inventory = MagicMock()
fake_loader = DictDataLoader({
# role common-role
'/etc/ansible/roles/common-role/tasks/main.yml': """
- debug: msg="{{role_var}}"
""",
# We do not need allow_duplicates: yes for this role
# because eliminating duplicates is done by the execution
# strategy, which we do not test here.
# role role1
'/etc/ansible/roles/role1/vars/main.yml': """
role_var: "role_var_from_role1"
""",
'/etc/ansible/roles/role1/meta/main.yml': """
dependencies:
- { role: common-role }
""",
# role role2
'/etc/ansible/roles/role2/vars/main.yml': """
role_var: "role_var_from_role2"
""",
'/etc/ansible/roles/role2/meta/main.yml': """
dependencies:
- { role: common-role }
""",
})
v = VariableManager(loader=fake_loader, inventory=mock_inventory)
play1 = Play.load(dict(
hosts=['all'],
roles=['role1', 'role2'],
), loader=fake_loader, variable_manager=v)
# The task defined by common-role exists twice because role1
# and role2 depend on common-role. Check that the tasks see
# different values of role_var.
blocks = play1.compile()
task = blocks[1].block[0]
res = v.get_vars(play=play1, task=task)
self.assertEqual(res['role_var'], 'role_var_from_role1')
task = blocks[2].block[0]
res = v.get_vars(play=play1, task=task)
self.assertEqual(res['role_var'], 'role_var_from_role2')