python-tripleoclient/tripleoclient/tests/test_utils.py

#   Copyright 2015 Red Hat, Inc.
#
#   Licensed under the Apache License, Version 2.0 (the "License"); you may
#   not use this file except in compliance with the License. You may obtain
#   a copy of the License at
#
#        http://www.apache.org/licenses/LICENSE-2.0
#
#   Unless required by applicable law or agreed to in writing, software
#   distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#   WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#   License for the specific language governing permissions and limitations
#   under the License.
#


import argparse
import datetime
import mock
import os.path
import tempfile

from heatclient import exc as hc_exc

from uuid import uuid4

from unittest import TestCase
import yaml

from tripleoclient import exceptions
from tripleoclient import utils


class TestWaitForStackUtil(TestCase):
    def setUp(self):
        self.mock_orchestration = mock.Mock()
        sleep_patch = mock.patch('time.sleep')
        self.addCleanup(sleep_patch.stop)
        sleep_patch.start()

    def mock_event(self, resource_name, id, resource_status_reason,
                   resource_status, event_time):
        e = mock.Mock()
        e.resource_name = resource_name
        e.id = id
        e.resource_status_reason = resource_status_reason
        e.resource_status = resource_status
        e.event_time = event_time
        return e

    @mock.patch("heatclient.common.event_utils.get_events")
    def test_wait_for_stack_ready(self, mock_el):
        stack = mock.Mock()
        stack.stack_name = 'stack'
        stack.stack_status = "CREATE_COMPLETE"
        self.mock_orchestration.stacks.get.return_value = stack

        complete = utils.wait_for_stack_ready(self.mock_orchestration, 'stack')
        self.assertTrue(complete)

    def test_wait_for_stack_ready_no_stack(self):
        self.mock_orchestration.stacks.get.return_value = None

        complete = utils.wait_for_stack_ready(self.mock_orchestration, 'stack')

        self.assertFalse(complete)

    @mock.patch("heatclient.common.event_utils.get_events")
    def test_wait_for_stack_ready_failed(self, mock_el):
        stack = mock.Mock()
        stack.stack_name = 'stack'
        stack.stack_status = "CREATE_FAILED"
        self.mock_orchestration.stacks.get.return_value = stack

        complete = utils.wait_for_stack_ready(self.mock_orchestration, 'stack')

        self.assertFalse(complete)

    @mock.patch("heatclient.common.event_utils.poll_for_events")
    def test_wait_for_stack_in_progress(self, mock_poll_for_events):

        mock_poll_for_events.return_value = ("CREATE_IN_PROGRESS", "MESSAGE")

        stack = mock.Mock()
        stack.stack_name = 'stack'
        stack.stack_status = 'CREATE_IN_PROGRESS'
        self.mock_orchestration.stacks.get.return_value = stack

        result = utils.wait_for_stack_ready(self.mock_orchestration, 'stack')
        self.assertEqual(False, result)

    @mock.patch('tripleoclient.utils.wait_for_provision_state')
    def test_set_nodes_state(self, wait_for_state_mock):

        wait_for_state_mock.return_value = True
        bm_client = mock.Mock()

        # One node already deployed, one in the manageable state after
        # introspection.
        nodes = [
            mock.Mock(uuid="ABCDEFGH", provision_state="active"),
            mock.Mock(uuid="IJKLMNOP", provision_state="manageable")
        ]

        skipped_states = ('active', 'available')
        uuids = list(utils.set_nodes_state(bm_client, nodes, 'provide',
                                           'available', skipped_states))

        bm_client.node.set_provision_state.assert_has_calls([
            mock.call('IJKLMNOP', 'provide'),
        ])

        self.assertEqual(uuids, ['IJKLMNOP', ])

    def test_wait_for_provision_state(self):

        baremetal_client = mock.Mock()

        baremetal_client.node.get.return_value = mock.Mock(
            provision_state="available", last_error=None)

        utils.wait_for_provision_state(baremetal_client, 'UUID', "available")

    def test_wait_for_provision_state_not_found(self):

        baremetal_client = mock.Mock()

        baremetal_client.node.get.return_value = None

        utils.wait_for_provision_state(baremetal_client, 'UUID', "available")

    def test_wait_for_provision_state_timeout(self):

        baremetal_client = mock.Mock()

        baremetal_client.node.get.return_value = mock.Mock(
            provision_state="not what we want", last_error=None)

        with self.assertRaises(exceptions.Timeout):
            utils.wait_for_provision_state(baremetal_client, 'UUID',
                                           "available", loops=1, sleep=0.01)

    def test_wait_for_provision_state_fail(self):

        baremetal_client = mock.Mock()

        baremetal_client.node.get.return_value = mock.Mock(
            provision_state="enroll",
            last_error="node on fire; returning to previous state.")

        with self.assertRaises(exceptions.StateTransitionFailed):
            utils.wait_for_provision_state(baremetal_client, 'UUID',
                                           "available", loops=1, sleep=0.01)

    @mock.patch('subprocess.check_call')
    @mock.patch('os.path.exists')
    def test_remove_known_hosts(self, mock_exists, mock_check_call):

        mock_exists.return_value = True

        utils.remove_known_hosts('192.168.0.1')
        known_hosts = os.path.expanduser("~/.ssh/known_hosts")

        mock_check_call.assert_called_with(
            ['ssh-keygen', '-R', '192.168.0.1', '-f', known_hosts])

    @mock.patch('subprocess.check_call')
    @mock.patch('os.path.exists')
    def test_remove_known_hosts_no_file(self, mock_exists, mock_check_call):

        mock_exists.return_value = False

        utils.remove_known_hosts('192.168.0.1')

        mock_check_call.assert_not_called()

    def test_empty_file_checksum(self):
        # Used a NamedTemporaryFile since it's deleted when the file is closed.
        with tempfile.NamedTemporaryFile() as empty_temp_file:
            self.assertEqual(utils.file_checksum(empty_temp_file.name),
                             'd41d8cd98f00b204e9800998ecf8427e')

    def test_non_empty_file_checksum(self):
        # Used a NamedTemporaryFile since it's deleted when the file is closed.
        with tempfile.NamedTemporaryFile() as temp_file:
            temp_file.write(b'foo')
            temp_file.flush()

            self.assertEqual(utils.file_checksum(temp_file.name),
                             'acbd18db4cc2f85cedef654fccc4a4d8')

    def test_shouldnt_checksum_open_special_files(self):
        self.assertRaises(ValueError, utils.file_checksum, '/dev/random')
        self.assertRaises(ValueError, utils.file_checksum, '/dev/zero')


class TestEnsureRunAsNormalUser(TestCase):

    @mock.patch('os.geteuid')
    def test_ensure_run_as_normal_user(self, os_geteuid_mock):
        os_geteuid_mock.return_value = 1000
        self.assertIsNone(utils.ensure_run_as_normal_user())

    @mock.patch('os.geteuid')
    def test_ensure_run_as_normal_user_root(self, os_geteuid_mock):
        os_geteuid_mock.return_value = 0
        self.assertRaises(exceptions.RootUserExecution,
                          utils.ensure_run_as_normal_user)

    @mock.patch('getpass.getuser')
    def test_get_deployment_user(self, mock_getpass):
        mock_getpass.return_value = 'stack'
        u = utils.get_deployment_user()
        self.assertEqual('stack', u)


class TestCreateOvercloudRC(TestCase):

    def test_write_overcloudrc(self):
        stack_name = 'teststack'

        tempdir = tempfile.mkdtemp()
        rcfile = os.path.join(tempdir, 'teststackrc')
        rcfile_v3 = os.path.join(tempdir, 'teststackrc.v3')

        overcloudrcs = {
            "overcloudrc": "overcloudrc not v3",
            "overcloudrc.v3": "overcloudrc.v3",
        }

        try:
            utils.write_overcloudrc(stack_name, overcloudrcs,
                                    config_directory=tempdir)
            rc = open(rcfile, 'rt').read()
            self.assertIn('overcloudrc not v3', rc)
            rc_v3 = open(rcfile_v3, 'rt').read()
            self.assertIn('overcloudrc.v3', rc_v3)
        finally:
            if os.path.exists(rcfile):
                os.unlink(rcfile)
            if os.path.exists(rcfile_v3):
                os.unlink(rcfile_v3)

            os.rmdir(tempdir)


class TestCreateTempestDeployerInput(TestCase):

    def test_create_tempest_deployer_input(self):
        with tempfile.NamedTemporaryFile() as cfgfile:
            filepath = cfgfile.name
            utils.create_tempest_deployer_input(filepath)
            cfg = open(filepath, 'rt').read()
            # Just make a simple test, to make sure it created a proper file:
            self.assertIn(
                '[volume-feature-enabled]\nbootable = true', cfg)


class TestGetEndpointMap(TestCase):

    def test_get_endpoint_map(self):
        stack = mock.MagicMock()
        emap = {'KeystonePublic': {'uri': 'http://foo:8000/'}}
        stack.to_dict.return_value = {
            'outputs': [{'output_key': 'EndpointMap',
                         'output_value': emap}]
        }

        endpoint_map = utils.get_endpoint_map(stack)
        self.assertEqual(endpoint_map,
                         {'KeystonePublic': {'uri': 'http://foo:8000/'}})


class TestNodeGetCapabilities(TestCase):
    def test_with_capabilities(self):
        node = mock.Mock(properties={'capabilities': 'x:y,foo:bar'})
        self.assertEqual({'x': 'y', 'foo': 'bar'},
                         utils.node_get_capabilities(node))

    def test_no_capabilities(self):
        node = mock.Mock(properties={})
        self.assertEqual({}, utils.node_get_capabilities(node))


class TestNodeAddCapabilities(TestCase):
    def test_add(self):
        bm_client = mock.Mock()
        node = mock.Mock(uuid='uuid1', properties={})
        new_caps = utils.node_add_capabilities(bm_client, node, x='y')
        bm_client.node.update.assert_called_once_with(
            'uuid1', [{'op': 'add', 'path': '/properties/capabilities',
                       'value': 'x:y'}])
        self.assertEqual('x:y', node.properties['capabilities'])
        self.assertEqual({'x': 'y'}, new_caps)


class FakeFlavor(object):
    def __init__(self, name, profile=''):
        self.name = name
        self.profile = name
        if profile != '':
            self.profile = profile

    def get_keys(self):
        return {
            'capabilities:boot_option': 'local',
            'capabilities:profile': self.profile
        }


class TestAssignVerifyProfiles(TestCase):
    def setUp(self):

        super(TestAssignVerifyProfiles, self).setUp()
        self.bm_client = mock.Mock(spec=['node'],
                                   node=mock.Mock(spec=['list', 'update']))
        self.nodes = []
        self.bm_client.node.list.return_value = self.nodes
        self.flavors = {name: (FakeFlavor(name), 1)
                        for name in ('compute', 'control')}

    def _get_fake_node(self, profile=None, possible_profiles=[],
                       provision_state='available'):
        caps = {'%s_profile' % p: '1'
                for p in possible_profiles}
        if profile is not None:
            caps['profile'] = profile
        caps = utils.dict_to_capabilities(caps)
        return mock.Mock(uuid=str(uuid4()),
                         properties={'capabilities': caps},
                         provision_state=provision_state,
                         spec=['uuid', 'properties', 'provision_state'])

    def _test(self, expected_errors, expected_warnings,
              assign_profiles=True, dry_run=False):
        errors, warnings = utils.assign_and_verify_profiles(self.bm_client,
                                                            self.flavors,
                                                            assign_profiles,
                                                            dry_run)
        self.assertEqual(errors, expected_errors)
        self.assertEqual(warnings, expected_warnings)

    def test_no_matching_without_scale(self):
        self.flavors = {name: (object(), 0)
                        for name in self.flavors}
        self.nodes[:] = [self._get_fake_node(profile='fake'),
                         self._get_fake_node(profile='fake')]

        self._test(0, 0)
        self.assertFalse(self.bm_client.node.update.called)

    def test_exact_match(self):
        self.nodes[:] = [self._get_fake_node(profile='compute'),
                         self._get_fake_node(profile='control')]

        self._test(0, 0)
        self.assertFalse(self.bm_client.node.update.called)

    def test_nodes_with_no_profiles_present(self):
        self.nodes[:] = [self._get_fake_node(profile='compute'),
                         self._get_fake_node(profile=None),
                         self._get_fake_node(profile='foobar'),
                         self._get_fake_node(profile='control')]

        self._test(0, 1)
        self.assertFalse(self.bm_client.node.update.called)

    def test_more_nodes_with_profiles_present(self):
        self.nodes[:] = [self._get_fake_node(profile='compute'),
                         self._get_fake_node(profile='compute'),
                         self._get_fake_node(profile='compute'),
                         self._get_fake_node(profile='control')]

        self._test(0, 1)
        self.assertFalse(self.bm_client.node.update.called)

    def test_no_nodes(self):
        # One error per each flavor
        self._test(2, 0)
        self.assertFalse(self.bm_client.node.update.called)

    def test_not_enough_nodes(self):
        self.nodes[:] = [self._get_fake_node(profile='compute')]
        self._test(1, 0)
        self.assertFalse(self.bm_client.node.update.called)

    def test_assign_profiles(self):
        self.nodes[:] = [self._get_fake_node(possible_profiles=['compute']),
                         self._get_fake_node(possible_profiles=['control']),
                         self._get_fake_node(possible_profiles=['compute'])]

        # one warning for a redundant node
        self._test(0, 1, assign_profiles=True)
        self.assertEqual(2, self.bm_client.node.update.call_count)

        actual_profiles = [utils.node_get_capabilities(node).get('profile')
                           for node in self.nodes]
        actual_profiles.sort(key=lambda x: str(x))
        self.assertEqual([None, 'compute', 'control'], actual_profiles)

    def test_assign_profiles_multiple_options(self):
        self.nodes[:] = [self._get_fake_node(possible_profiles=['compute',
                                                                'control']),
                         self._get_fake_node(possible_profiles=['compute',
                                                                'control'])]

        self._test(0, 0, assign_profiles=True)
        self.assertEqual(2, self.bm_client.node.update.call_count)

        actual_profiles = [utils.node_get_capabilities(node).get('profile')
                           for node in self.nodes]
        actual_profiles.sort(key=lambda x: str(x))
        self.assertEqual(['compute', 'control'], actual_profiles)

    def test_assign_profiles_not_enough(self):
        self.nodes[:] = [self._get_fake_node(possible_profiles=['compute']),
                         self._get_fake_node(possible_profiles=['compute']),
                         self._get_fake_node(possible_profiles=['compute'])]

        self._test(1, 1, assign_profiles=True)
        # no node update for failed flavor
        self.assertEqual(1, self.bm_client.node.update.call_count)

        actual_profiles = [utils.node_get_capabilities(node).get('profile')
                           for node in self.nodes]
        actual_profiles.sort(key=lambda x: str(x))
        self.assertEqual([None, None, 'compute'], actual_profiles)

    def test_assign_profiles_dry_run(self):
        self.nodes[:] = [self._get_fake_node(possible_profiles=['compute']),
                         self._get_fake_node(possible_profiles=['control']),
                         self._get_fake_node(possible_profiles=['compute'])]

        self._test(0, 1, dry_run=True)
        self.assertFalse(self.bm_client.node.update.called)

        actual_profiles = [utils.node_get_capabilities(node).get('profile')
                           for node in self.nodes]
        self.assertEqual([None] * 3, actual_profiles)

    def test_scale(self):
        # active nodes with assigned profiles are fine
        self.nodes[:] = [self._get_fake_node(profile='compute',
                                             provision_state='active'),
                         self._get_fake_node(profile='control')]

        self._test(0, 0, assign_profiles=True)
        self.assertFalse(self.bm_client.node.update.called)

    def test_assign_profiles_wrong_state(self):
        # active nodes are not considered for assigning profiles
        self.nodes[:] = [self._get_fake_node(possible_profiles=['compute'],
                                             provision_state='active'),
                         self._get_fake_node(possible_profiles=['control'],
                                             provision_state='cleaning'),
                         self._get_fake_node(profile='compute',
                                             provision_state='error')]

        self._test(2, 1, assign_profiles=True)
        self.assertFalse(self.bm_client.node.update.called)

    def test_no_spurious_warnings(self):
        self.nodes[:] = [self._get_fake_node(profile=None)]
        self.flavors = {'baremetal': (FakeFlavor('baremetal', None), 1)}
        self._test(0, 0)


class TestPromptUser(TestCase):
    def setUp(self):
        super(TestPromptUser, self).setUp()
        self.logger = mock.MagicMock()
        self.logger.info = mock.MagicMock()

    @mock.patch('sys.stdin')
    def test_user_accepts(self, stdin_mock):
        stdin_mock.isatty.return_value = True
        stdin_mock.readline.return_value = "yes"
        result = utils.prompt_user_for_confirmation("[y/N]?", self.logger)
        self.assertTrue(result)

    @mock.patch('sys.stdin')
    def test_user_declines(self, stdin_mock):
        stdin_mock.isatty.return_value = True
        stdin_mock.readline.return_value = "no"
        result = utils.prompt_user_for_confirmation("[y/N]?", self.logger)
        self.assertFalse(result)

    @mock.patch('sys.stdin')
    def test_user_no_tty(self, stdin_mock):
        stdin_mock.isatty.return_value = False
        stdin_mock.readline.return_value = "yes"
        result = utils.prompt_user_for_confirmation("[y/N]?", self.logger)
        self.assertFalse(result)

    @mock.patch('sys.stdin')
    def test_user_aborts_control_c(self, stdin_mock):
        stdin_mock.isatty.return_value = False
        stdin_mock.readline.side_effect = KeyboardInterrupt()
        result = utils.prompt_user_for_confirmation("[y/N]?", self.logger)
        self.assertFalse(result)

    @mock.patch('sys.stdin')
    def test_user_aborts_with_control_d(self, stdin_mock):
        stdin_mock.isatty.return_value = False
        stdin_mock.readline.side_effect = EOFError()
        result = utils.prompt_user_for_confirmation("[y/N]?", self.logger)
        self.assertFalse(result)


class TestReplaceLinks(TestCase):

    def setUp(self):
        super(TestReplaceLinks, self).setUp()
        self.link_replacement = {
            'file:///home/stack/test.sh':
                'user-files/home/stack/test.sh',
            'file:///usr/share/extra-templates/my.yml':
                'user-files/usr/share/extra-templates/my.yml',
        }

    def test_replace_links(self):
        source = (
            'description: my template\n'
            'heat_template_version: "2014-10-16"\n'
            'resources:\n'
            '  test_config:\n'
            '    properties:\n'
            '      config: {get_file: "file:///home/stack/test.sh"}\n'
            '    type: OS::Heat::SoftwareConfig\n'
        )
        expected = (
            'description: my template\n'
            'heat_template_version: "2014-10-16"\n'
            'resources:\n'
            '  test_config:\n'
            '    properties:\n'
            '      config: {get_file: user-files/home/stack/test.sh}\n'
            '    type: OS::Heat::SoftwareConfig\n'
        )

        # the yaml->string dumps aren't always character-precise, so
        # we need to parse them into dicts for comparison
        expected_dict = yaml.safe_load(expected)
        result_dict = yaml.safe_load(utils.replace_links_in_template_contents(
            source, self.link_replacement))
        self.assertEqual(expected_dict, result_dict)

    def test_replace_links_not_template(self):
        # valid JSON/YAML, but doesn't have heat_template_version
        source = '{"get_file": "file:///home/stack/test.sh"}'
        self.assertEqual(
            source,
            utils.replace_links_in_template_contents(
                source, self.link_replacement))

    def test_replace_links_not_yaml(self):
        # invalid JSON/YAML -- curly brace left open
        source = '{"invalid JSON"'
        self.assertEqual(
            source,
            utils.replace_links_in_template_contents(
                source, self.link_replacement))

    def test_relative_link_replacement(self):
        current_dir = 'user-files/home/stack'
        expected = {
            'file:///home/stack/test.sh':
                'test.sh',
            'file:///usr/share/extra-templates/my.yml':
                '../../usr/share/extra-templates/my.yml',
        }
        self.assertEqual(expected, utils.relative_link_replacement(
            self.link_replacement, current_dir))


class TestBracketIPV6(TestCase):
    def test_basic(self):
        result = utils.bracket_ipv6('::1')
        self.assertEqual('[::1]', result)

    def test_hostname(self):
        result = utils.bracket_ipv6('hostname')
        self.assertEqual('hostname', result)

    def test_already_bracketed(self):
        result = utils.bracket_ipv6('[::1]')
        self.assertEqual('[::1]', result)


class TestStoreCliParam(TestCase):

    def setUp(self):
        self.args = argparse.ArgumentParser()

    @mock.patch('os.mkdir')
    @mock.patch('os.path.exists')
    def test_fail_to_create_file(self, mock_exists, mock_mkdir):
        mock_exists.return_value = False
        mock_mkdir.side_effect = OSError()
        command = "undercloud install"
        self.assertRaises(OSError, utils.store_cli_param, command, self.args)

    @mock.patch('os.path.isdir')
    @mock.patch('os.path.exists')
    def test_exists_but_not_dir(self, mock_exists, mock_isdir):
        mock_exists.return_value = True
        mock_isdir.return_value = False
        self.assertRaises(exceptions.InvalidConfiguration,
                          utils.store_cli_param,
                          "overcloud deploy", self.args)

    @mock.patch('os.path.isdir')
    @mock.patch('os.path.exists')
    def test_write_cli_param(self, mock_exists, mock_isdir):
        history_path = os.path.join(os.path.expanduser("~"), '.tripleo')
        mock_exists.return_value = True
        mock_isdir.return_value = True
        mock_file = mock.mock_open()

        class ArgsFake(object):
            def __init__(self):
                self.a = 1

        dt = datetime.datetime(2017, 11, 22)
        with mock.patch("six.moves.builtins.open", mock_file):
            with mock.patch('tripleoclient.utils.datetime') as mock_date:
                mock_date.datetime.now.return_value = dt
                utils.store_cli_param("overcloud plan list", ArgsFake())

        expected_call = [
            mock.call("%s/history" % history_path, 'a'),
            mock.call().write('2017-11-22 00:00:00 overcloud-plan-list a=1 \n')
        ]
        mock_file.assert_has_calls(expected_call, any_order=True)

    @mock.patch('six.moves.builtins.open')
    @mock.patch('os.path.isdir')
    @mock.patch('os.path.exists')
    def test_fail_to_write_data(self, mock_exists, mock_isdir, mock_open):
        mock_exists.return_value = True
        mock_isdir.return_value = True
        mock_open.side_effect = IOError()
        self.assertRaises(IOError, utils.store_cli_param, "command", self.args)


class ProcessMultipleEnvironments(TestCase):

    def setUp(self):
        self.tht_root = '/twd/templates'
        self.user_tht_root = '/tmp/thtroot/'
        self.created_env_files = [
            './inside.yaml', '/tmp/thtroot/abs.yaml',
            '/tmp/thtroot/puppet/foo.yaml',
            '/tmp/thtroot/environments/myenv.yaml',
            '/tmp/thtroot42/notouch.yaml',
            './tmp/thtroot/notouch2.yaml',
            '../outside.yaml']

    @mock.patch('heatclient.common.template_utils.'
                'process_environment_and_files', return_value=({}, {}),
                autospec=True)
    @mock.patch('heatclient.common.template_utils.'
                'get_template_contents', return_value=({}, {}),
                autospec=True)
    @mock.patch('heatclient.common.environment_format.'
                'parse', autospec=True, return_value=dict())
    @mock.patch('heatclient.common.template_format.'
                'parse', autospec=True, return_value=dict())
    def test_redirect_templates_paths(self,
                                      mock_hc_templ_parse,
                                      mock_hc_env_parse,
                                      mock_hc_get_templ_cont,
                                      mock_hc_process):
        utils.process_multiple_environments(self.created_env_files,
                                            self.tht_root,
                                            self.user_tht_root)

        mock_hc_process.assert_has_calls([
            mock.call(env_path='./inside.yaml'),
            mock.call(env_path='/twd/templates/abs.yaml'),
            mock.call(env_path='/twd/templates/puppet/foo.yaml'),
            mock.call(env_path='/twd/templates/environments/myenv.yaml'),
            mock.call(env_path='/tmp/thtroot42/notouch.yaml'),
            mock.call(env_path='./tmp/thtroot/notouch2.yaml'),
            mock.call(env_path='../outside.yaml')])

    @mock.patch('heatclient.common.template_utils.'
                'process_environment_and_files', return_value=({}, {}),
                autospec=True)
    @mock.patch('heatclient.common.template_utils.'
                'get_template_contents', return_value=({}, {}),
                autospec=True)
    @mock.patch('heatclient.common.environment_format.'
                'parse', autospec=True, return_value=dict())
    @mock.patch('heatclient.common.template_format.'
                'parse', autospec=True, return_value=dict())
    @mock.patch('yaml.safe_dump', autospec=True)
    @mock.patch('yaml.safe_load', autospec=True)
    @mock.patch('six.moves.builtins.open')
    @mock.patch('tempfile.NamedTemporaryFile', autospec=True)
    def test_rewrite_env_files(self,
                               mock_temp, mock_open,
                               mock_yaml_load,
                               mock_yaml_dump,
                               mock_hc_templ_parse,
                               mock_hc_env_parse,
                               mock_hc_get_templ_cont,
                               mock_hc_process):

        def hc_process(*args, **kwargs):
            if 'abs.yaml' in kwargs['env_path']:
                raise hc_exc.CommandError
            else:
                return ({}, {})

        mock_hc_process.side_effect = hc_process
        rewritten_env = {'resource_registry': {
            'OS::Foo::Bar': '/twd/outside.yaml',
            'OS::Foo::Baz': '/twd/templates/inside.yaml',
            'OS::Foo::Qux': '/twd/templates/abs.yaml',
            'OS::Foo::Quux': '/tmp/thtroot42/notouch.yaml',
            'OS::Foo::Corge': '/twd/templates/puppet/foo.yaml'
            }
        }
        myenv = {'resource_registry': {
            'OS::Foo::Bar': '../outside.yaml',
            'OS::Foo::Baz': './inside.yaml',
            'OS::Foo::Qux': '/tmp/thtroot/abs.yaml',
            'OS::Foo::Quux': '/tmp/thtroot42/notouch.yaml',
            'OS::Foo::Corge': '/tmp/thtroot/puppet/foo.yaml'
            }
        }
        mock_yaml_load.return_value = myenv

        utils.process_multiple_environments(self.created_env_files,
                                            self.tht_root,
                                            self.user_tht_root, False)

        mock_yaml_dump.assert_has_calls([mock.call(rewritten_env,
                                        default_flow_style=False)])


class GetTripleoAnsibleInventory(TestCase):

    def setUp(self):
        super(GetTripleoAnsibleInventory, self).setUp()
        self.inventory_file = ''
        self.ssh_user = 'heat_admin'
        self.stack = 'foo-overcloud'

    @mock.patch('tripleoclient.utils.get_tripleo_ansible_inventory',
                autospec=True)
    def test_get_tripleo_ansible_inventory(self, mock_inventory):

        with mock.patch('os.path.exists') as mock_exists:
            mock_exists.return_value = True

            self.cmd = utils.get_tripleo_ansible_inventory(
                inventory_file=self.inventory_file,
                ssh_user=self.ssh_user,
                stack=self.stack)

            self.cmd.take_action()

            mock_inventory.assert_called_once_with(
                inventory_file='',
                ssh_user='heat_admin',
                stack='foo-overcloud'
            )