ansible/test/units/executor/test_task_executor.py

# (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

from ansible.compat.tests import unittest
from ansible.compat.tests.mock import patch, MagicMock

from ansible.errors import AnsibleError, AnsibleParserError
from ansible.executor.task_executor import TaskExecutor
from ansible.playbook.play_context import PlayContext
from ansible.plugins import action_loader, lookup_loader

from units.mock.loader import DictDataLoader

class TestTaskExecutor(unittest.TestCase):

    def setUp(self):
        pass

    def tearDown(self):
        pass

    def test_task_executor_init(self):
        fake_loader = DictDataLoader({})
        mock_host = MagicMock()
        mock_task = MagicMock()
        mock_play_context = MagicMock()
        mock_shared_loader = MagicMock()
        new_stdin = None
        job_vars = dict()
        te = TaskExecutor(
            host = mock_host,
            task = mock_task,
            job_vars = job_vars,
            play_context = mock_play_context,
            new_stdin = new_stdin,
            loader = fake_loader,
            shared_loader_obj = mock_shared_loader,
        )

    def test_task_executor_run(self):
        fake_loader = DictDataLoader({})

        mock_host = MagicMock()

        mock_task = MagicMock()
        mock_task._role._role_path = '/path/to/role/foo'

        mock_play_context = MagicMock()

        mock_shared_loader = MagicMock()

        new_stdin = None
        job_vars = dict()

        te = TaskExecutor(
            host = mock_host,
            task = mock_task,
            job_vars = job_vars,
            play_context = mock_play_context,
            new_stdin = new_stdin,
            loader = fake_loader,
            shared_loader_obj = mock_shared_loader,
        )

        te._get_loop_items = MagicMock(return_value=None)
        te._execute = MagicMock(return_value=dict())
        res = te.run()

        te._get_loop_items = MagicMock(return_value=[])
        res = te.run()

        te._get_loop_items = MagicMock(return_value=['a','b','c'])
        te._run_loop = MagicMock(return_value=[dict(item='a', changed=True), dict(item='b', failed=True), dict(item='c')])
        res = te.run()

        te._get_loop_items = MagicMock(side_effect=AnsibleError(""))
        res = te.run()
        self.assertIn("failed", res)

    def test_task_executor_get_loop_items(self):
        fake_loader = DictDataLoader({})
        
        mock_host = MagicMock()

        mock_task = MagicMock()
        mock_task.loop = 'items'
        mock_task.loop_args = ['a', 'b', 'c']

        mock_play_context = MagicMock()

        mock_shared_loader = MagicMock()
        mock_shared_loader.lookup_loader = lookup_loader

        new_stdin = None
        job_vars = dict()

        te = TaskExecutor(
            host = mock_host,
            task = mock_task,
            job_vars = job_vars,
            play_context = mock_play_context,
            new_stdin = new_stdin,
            loader = fake_loader,
            shared_loader_obj = mock_shared_loader,
        )

        items = te._get_loop_items()
        self.assertEqual(items, ['a', 'b', 'c'])

    def test_task_executor_run_loop(self):
        items = ['a', 'b', 'c']

        fake_loader = DictDataLoader({})

        mock_host = MagicMock()

        def _copy():
            new_item = MagicMock()
            return new_item

        mock_task = MagicMock()
        mock_task.copy.side_effect = _copy

        mock_play_context = MagicMock()

        mock_shared_loader = MagicMock()

        new_stdin = None
        job_vars = dict()

        te = TaskExecutor(
            host = mock_host,
            task = mock_task,
            job_vars = job_vars,
            play_context = mock_play_context,
            new_stdin = new_stdin,
            loader = fake_loader,
            shared_loader_obj = mock_shared_loader,
        )

        def _execute(variables):
            return dict(item=variables.get('item'))

        te._squash_items = MagicMock(return_value=items)
        te._execute = MagicMock(side_effect=_execute)

        res = te._run_loop(items)
        self.assertEqual(len(res), 3)

    def test_task_executor_squash_items(self):
        items = ['a', 'b', 'c']

        fake_loader = DictDataLoader({})

        mock_host = MagicMock()

        def _evaluate_conditional(templar, variables):
            item = variables.get('item')
            if item == 'b':
                return False
            return True

        mock_task = MagicMock()
        mock_task.evaluate_conditional.side_effect = _evaluate_conditional

        mock_play_context = MagicMock()

        mock_shared_loader = None

        new_stdin = None
        job_vars = dict(pkg_mgr='yum')

        te = TaskExecutor(
            host = mock_host,
            task = mock_task,
            job_vars = job_vars,
            play_context = mock_play_context,
            new_stdin = new_stdin,
            loader = fake_loader,
            shared_loader_obj = mock_shared_loader,
        )

        mock_task.action = 'foo'
        new_items = te._squash_items(items=items, variables=job_vars)
        self.assertEqual(new_items, ['a', 'b', 'c'])

        mock_task.action = 'yum'
        new_items = te._squash_items(items=items, variables=job_vars)
        self.assertEqual(new_items, [['a','c']])

        mock_task.action = '{{pkg_mgr}}'
        new_items = te._squash_items(items=items, variables=job_vars)
        self.assertEqual(new_items, [['a', 'c']])

        # Smoketests -- these won't optimize but make sure that they don't
        # traceback either
        mock_task.action = '{{unknown}}'
        new_items = te._squash_items(items=items, variables=job_vars)
        self.assertEqual(new_items, ['a', 'b', 'c'])

        items = [dict(name='a', state='present'),
                dict(name='b', state='present'),
                dict(name='c', state='present')]
        mock_task.action = 'yum'
        new_items = te._squash_items(items=items, variables=job_vars)
        self.assertEqual(new_items, items)

    def test_task_executor_execute(self):
        fake_loader = DictDataLoader({})

        mock_host = MagicMock()

        mock_task = MagicMock()
        mock_task.args = dict()
        mock_task.retries = 0
        mock_task.delay = -1
        mock_task.register = 'foo'
        mock_task.until = None
        mock_task.changed_when = None
        mock_task.failed_when = None
        mock_task.post_validate.return_value = None
        # mock_task.async cannot be left unset, because on Python 3 MagicMock()
        # > 0 raises a TypeError   There are two reasons for using the value 1
        # here: on Python 2 comparing MagicMock() > 0 returns True, and the
        # other reason is that if I specify 0 here, the test fails. ;)
        mock_task.async = 1

        mock_play_context = MagicMock()
        mock_play_context.post_validate.return_value = None
        mock_play_context.update_vars.return_value = None

        mock_connection = MagicMock()
        mock_connection.set_host_overrides.return_value = None
        mock_connection._connect.return_value = None

        mock_action = MagicMock()

        shared_loader = None
        new_stdin = None
        job_vars = dict(omit="XXXXXXXXXXXXXXXXXXX")

        te = TaskExecutor(
            host = mock_host,
            task = mock_task,
            job_vars = job_vars,
            play_context = mock_play_context,
            new_stdin = new_stdin,
            loader = fake_loader,
            shared_loader_obj = shared_loader,
        )

        te._get_connection = MagicMock(return_value=mock_connection)
        te._get_action_handler = MagicMock(return_value=mock_action)

        mock_action.run.return_value = dict(ansible_facts=dict())
        res = te._execute()

        mock_task.changed_when = "1 == 1"
        res = te._execute()

        mock_task.changed_when = None
        mock_task.failed_when = "1 == 1"
        res = te._execute()

        mock_task.failed_when = None
        mock_task.evaluate_conditional.return_value = False
        res = te._execute()

        mock_task.evaluate_conditional.return_value = True
        mock_task.args = dict(_raw_params='foo.yml', a='foo', b='bar')
        mock_task.action = 'include'
        res = te._execute()

    def test_task_executor_poll_async_result(self):
        fake_loader = DictDataLoader({})

        mock_host = MagicMock()

        mock_task = MagicMock()
        mock_task.async = 3
        mock_task.poll  = 1

        mock_play_context = MagicMock()

        mock_connection = MagicMock()

        mock_action = MagicMock()

        shared_loader = MagicMock()
        shared_loader.action_loader = action_loader

        new_stdin = None
        job_vars = dict(omit="XXXXXXXXXXXXXXXXXXX")

        te = TaskExecutor(
            host = mock_host,
            task = mock_task,
            job_vars = job_vars,
            play_context = mock_play_context,
            new_stdin = new_stdin,
            loader = fake_loader,
            shared_loader_obj = shared_loader,
        )

        te._connection = MagicMock()

        def _get(*args, **kwargs):
            mock_action = MagicMock()
            mock_action.run.return_value = dict(stdout='')
            return mock_action

        # testing with some bad values in the result passed to poll async,
        # and with a bad value returned from the mock action
        with patch.object(action_loader, 'get', _get):
            mock_templar = MagicMock()
            res = te._poll_async_result(result=dict(), templar=mock_templar)
            self.assertIn('failed', res)
            res = te._poll_async_result(result=dict(ansible_job_id=1), templar=mock_templar)
            self.assertIn('failed', res)

        def _get(*args, **kwargs):
            mock_action = MagicMock()
            mock_action.run.return_value = dict(finished=1)
            return mock_action

        # now testing with good values
        with patch.object(action_loader, 'get', _get):
            mock_templar = MagicMock()
            res = te._poll_async_result(result=dict(ansible_job_id=1), templar=mock_templar)
            self.assertEqual(res, dict(finished=1))