Add unit test coverage for account generator

The unit test coverage was missed in the refactor of the test
accounts generator tool I9970cb29ec4d448a381b4fe293fdfd91d8cfc17a,
so adding it now.

Change-Id: Id78028fb97951c5af49a1320a471c87a05023fad
diff --git a/tempest/tests/cmd/test_account_generator.py b/tempest/tests/cmd/test_account_generator.py
new file mode 100755
index 0000000..f253802
--- /dev/null
+++ b/tempest/tests/cmd/test_account_generator.py
@@ -0,0 +1,346 @@
+# Copyright (c) 2016 Hewlett-Packard Enterprise Development Company, L.P.
+#
+#    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 fixtures
+import mock
+from oslo_config import cfg
+
+from tempest.cmd import account_generator
+from tempest import config
+from tempest.tests import base
+from tempest.tests import fake_config
+from tempest.tests.lib import fake_identity
+
+
+class FakeOpts(object):
+
+    def __init__(self, version=3):
+        self.os_username = 'fake_user'
+        self.os_password = 'fake_password'
+        self.os_project_name = 'fake_project_name'
+        self.os_tenant_name = None
+        self.os_domain_name = 'fake_domain'
+        self.tag = 'fake'
+        self.concurrency = 2
+        self.with_admin = True
+        self.identity_version = version
+        self.accounts = 'fake_accounts.yml'
+
+
+class MockHelpersMixin(object):
+
+    def mock_config_and_opts(self, identity_version):
+        self.useFixture(fake_config.ConfigFixture())
+        self.patchobject(config, 'TempestConfigPrivate',
+                         fake_config.FakePrivate)
+        self.opts = FakeOpts(version=identity_version)
+
+    def mock_resource_creation(self):
+        fake_resource = dict(id='id', name='name')
+        self.user_create_fixture = self.useFixture(fixtures.MockPatch(
+            self.cred_client + '.create_user', return_value=fake_resource))
+        self.useFixture(fixtures.MockPatch(
+            self.cred_client + '.create_project',
+            return_value=fake_resource))
+        self.useFixture(fixtures.MockPatch(
+            self.cred_client + '.assign_user_role'))
+        self.useFixture(fixtures.MockPatch(
+            self.cred_client + '._check_role_exists',
+            return_value=fake_resource))
+        self.useFixture(fixtures.MockPatch(
+            self.dynamic_creds + '._create_network',
+            return_value=fake_resource))
+        self.useFixture(fixtures.MockPatch(
+            self.dynamic_creds + '._create_subnet',
+            return_value=fake_resource))
+        self.useFixture(fixtures.MockPatch(
+            self.dynamic_creds + '._create_router',
+            return_value=fake_resource))
+        self.useFixture(fixtures.MockPatch(
+            self.dynamic_creds + '._add_router_interface',
+            return_value=fake_resource))
+
+    def mock_domains(self):
+        fake_domain_list = {'domains': [{'id': 'fake_domain',
+                                         'name': 'Fake_Domain'}]}
+        self.useFixture(fixtures.MockPatch(''.join([
+            'tempest.services.identity.v3.json.domains_client.'
+            'DomainsClient.list_domains']),
+            return_value=fake_domain_list))
+        self.useFixture(fixtures.MockPatch(
+            self.cred_client + '.assign_user_role_on_domain'))
+
+
+class TestAccountGeneratorV2(base.TestCase, MockHelpersMixin):
+
+    identity_version = 2
+    identity_response = fake_identity._fake_v2_response
+
+    def setUp(self):
+        super(TestAccountGeneratorV2, self).setUp()
+        self.mock_config_and_opts(self.identity_version)
+        self.useFixture(fixtures.MockPatch(
+            'tempest.lib.auth.AuthProvider.set_auth',
+            return_value=self.identity_response))
+
+    def test_get_credential_provider(self):
+        cp = account_generator.get_credential_provider(self.opts)
+        admin_creds = cp.default_admin_creds
+        self.assertEqual(self.opts.tag, cp.name)
+        self.assertIn(str(self.opts.identity_version), cp.identity_version)
+        self.assertEqual(self.opts.os_username, admin_creds.username)
+        self.assertEqual(self.opts.os_project_name, admin_creds.tenant_name)
+        self.assertEqual(self.opts.os_password, admin_creds.password)
+        self.assertFalse(hasattr(admin_creds, 'domain_name'))
+
+    def test_get_credential_provider_with_tenant(self):
+        self.opts.os_project_name = None
+        self.opts.os_tenant_name = 'fake_tenant'
+        cp = account_generator.get_credential_provider(self.opts)
+        admin_creds = cp.default_admin_creds
+        self.assertEqual(self.opts.os_tenant_name, admin_creds.tenant_name)
+
+
+class TestAccountGeneratorV3(TestAccountGeneratorV2):
+
+    identity_version = 3
+    identity_response = fake_identity._fake_v3_response
+
+    def setUp(self):
+        super(TestAccountGeneratorV3, self).setUp()
+        fake_domain_list = {'domains': [{'id': 'fake_domain'}]}
+        self.useFixture(fixtures.MockPatch(''.join([
+            'tempest.services.identity.v3.json.domains_client.'
+            'DomainsClient.list_domains']),
+            return_value=fake_domain_list))
+
+    def test_get_credential_provider(self):
+        cp = account_generator.get_credential_provider(self.opts)
+        admin_creds = cp.default_admin_creds
+        self.assertEqual(self.opts.tag, cp.name)
+        self.assertIn(str(self.opts.identity_version), cp.identity_version)
+        self.assertEqual(self.opts.os_username, admin_creds.username)
+        self.assertEqual(self.opts.os_project_name, admin_creds.tenant_name)
+        self.assertEqual(self.opts.os_password, admin_creds.password)
+        self.assertEqual(self.opts.os_domain_name, admin_creds.domain_name)
+
+    def test_get_credential_provider_without_domain(self):
+        self.opts.os_domain_name = None
+        cp = account_generator.get_credential_provider(self.opts)
+        admin_creds = cp.default_admin_creds
+        self.assertIsNotNone(admin_creds.domain_name)
+
+
+class TestGenerateResourcesV2(base.TestCase, MockHelpersMixin):
+
+    identity_version = 2
+    identity_response = fake_identity._fake_v2_response
+    cred_client = 'tempest.common.cred_client.V2CredsClient'
+    dynamic_creds = 'tempest.common.dynamic_creds.DynamicCredentialProvider'
+
+    def setUp(self):
+        super(TestGenerateResourcesV2, self).setUp()
+        self.mock_config_and_opts(self.identity_version)
+        self.useFixture(fixtures.MockPatch(
+            'tempest.lib.auth.AuthProvider.set_auth',
+            return_value=self.identity_response))
+        self.cred_provider = account_generator.get_credential_provider(
+            self.opts)
+        self.mock_resource_creation()
+
+    def test_generate_resources_no_admin(self):
+        cfg.CONF.set_default('swift', False, group='service_available')
+        cfg.CONF.set_default('heat', False, group='service_available')
+        cfg.CONF.set_default('operator_role', 'fake_operator',
+                             group='object-storage')
+        cfg.CONF.set_default('reseller_admin_role', 'fake_reseller',
+                             group='object-storage')
+        cfg.CONF.set_default('stack_owner_role', 'fake_owner',
+                             group='orchestration')
+        resources = account_generator.generate_resources(
+            self.cred_provider, admin=False)
+        resource_types = [k for k, _ in resources]
+        # No admin, no heat, no swift, expect two credentials only
+        self.assertEqual(2, len(resources))
+        # Ensure create_user was invoked twice (two distinct users)
+        self.assertEqual(2, self.user_create_fixture.mock.call_count)
+        self.assertIn('primary', resource_types)
+        self.assertIn('alt', resource_types)
+        self.assertNotIn('admin', resource_types)
+        self.assertNotIn(['fake_operator'], resource_types)
+        self.assertNotIn(['fake_reseller'], resource_types)
+        self.assertNotIn(['fake_owner'], resource_types)
+        for resource in resources:
+            self.assertIsNotNone(resource[1].network)
+            self.assertIsNotNone(resource[1].router)
+            self.assertIsNotNone(resource[1].subnet)
+
+    def test_generate_resources_admin(self):
+        cfg.CONF.set_default('swift', False, group='service_available')
+        cfg.CONF.set_default('heat', False, group='service_available')
+        cfg.CONF.set_default('operator_role', 'fake_operator',
+                             group='object-storage')
+        cfg.CONF.set_default('reseller_admin_role', 'fake_reseller',
+                             group='object-storage')
+        cfg.CONF.set_default('stack_owner_role', 'fake_owner',
+                             group='orchestration')
+        resources = account_generator.generate_resources(
+            self.cred_provider, admin=True)
+        resource_types = [k for k, _ in resources]
+        # Admin, no heat, no swift, expect three credentials only
+        self.assertEqual(3, len(resources))
+        # Ensure create_user was invoked 3 times (3 distinct users)
+        self.assertEqual(3, self.user_create_fixture.mock.call_count)
+        self.assertIn('primary', resource_types)
+        self.assertIn('alt', resource_types)
+        self.assertIn('admin', resource_types)
+        self.assertNotIn(['fake_operator'], resource_types)
+        self.assertNotIn(['fake_reseller'], resource_types)
+        self.assertNotIn(['fake_owner'], resource_types)
+        for resource in resources:
+            self.assertIsNotNone(resource[1].network)
+            self.assertIsNotNone(resource[1].router)
+            self.assertIsNotNone(resource[1].subnet)
+
+    def test_generate_resources_swift_heat_admin(self):
+        cfg.CONF.set_default('swift', True, group='service_available')
+        cfg.CONF.set_default('heat', True, group='service_available')
+        cfg.CONF.set_default('operator_role', 'fake_operator',
+                             group='object-storage')
+        cfg.CONF.set_default('reseller_admin_role', 'fake_reseller',
+                             group='object-storage')
+        cfg.CONF.set_default('stack_owner_role', 'fake_owner',
+                             group='orchestration')
+        resources = account_generator.generate_resources(
+            self.cred_provider, admin=True)
+        resource_types = [k for k, _ in resources]
+        # all options on, expect six credentials
+        self.assertEqual(6, len(resources))
+        # Ensure create_user was invoked 6 times (6 distinct users)
+        self.assertEqual(6, self.user_create_fixture.mock.call_count)
+        self.assertIn('primary', resource_types)
+        self.assertIn('alt', resource_types)
+        self.assertIn('admin', resource_types)
+        self.assertIn(['fake_operator'], resource_types)
+        self.assertIn(['fake_reseller'], resource_types)
+        self.assertIn(['fake_owner'], resource_types)
+        for resource in resources:
+            self.assertIsNotNone(resource[1].network)
+            self.assertIsNotNone(resource[1].router)
+            self.assertIsNotNone(resource[1].subnet)
+
+
+class TestGenerateResourcesV3(TestGenerateResourcesV2):
+
+    identity_version = 3
+    identity_response = fake_identity._fake_v3_response
+    cred_client = 'tempest.common.cred_client.V3CredsClient'
+
+    def setUp(self):
+        self.mock_domains()
+        super(TestGenerateResourcesV3, self).setUp()
+
+
+class TestDumpAccountsV2(base.TestCase, MockHelpersMixin):
+
+    identity_version = 2
+    identity_response = fake_identity._fake_v2_response
+    cred_client = 'tempest.common.cred_client.V2CredsClient'
+    dynamic_creds = 'tempest.common.dynamic_creds.DynamicCredentialProvider'
+    domain_is_in = False
+
+    def setUp(self):
+        super(TestDumpAccountsV2, self).setUp()
+        self.mock_config_and_opts(self.identity_version)
+        self.useFixture(fixtures.MockPatch(
+            'tempest.lib.auth.AuthProvider.set_auth',
+            return_value=self.identity_response))
+        self.cred_provider = account_generator.get_credential_provider(
+            self.opts)
+        self.mock_resource_creation()
+        cfg.CONF.set_default('swift', True, group='service_available')
+        cfg.CONF.set_default('heat', True, group='service_available')
+        self.resources = account_generator.generate_resources(
+            self.cred_provider, admin=True)
+
+    def test_dump_accounts(self):
+        self.useFixture(fixtures.MockPatch('os.path.exists',
+                                           return_value=False))
+        mocked_open = mock.mock_open()
+        with mock.patch('{}.open'.format(account_generator.__name__),
+                        mocked_open, create=True):
+            with mock.patch('yaml.safe_dump') as yaml_dump_mock:
+                account_generator.setup_logging()
+                account_generator.dump_accounts(self.resources,
+                                                self.opts.identity_version,
+                                                self.opts.accounts)
+        mocked_open.assert_called_once_with(self.opts.accounts, 'w')
+        handle = mocked_open()
+        # Ordered args in [0], keyword args in [1]
+        accounts, f = yaml_dump_mock.call_args[0]
+        self.assertEqual(handle, f)
+        self.assertEqual(6, len(accounts))
+        if self.domain_is_in:
+            self.assertIn('domain_name', accounts[0].keys())
+        else:
+            self.assertNotIn('domain_name', accounts[0].keys())
+        self.assertEqual(1, len([x for x in accounts if
+                                 x.get('types') == ['admin']]))
+        self.assertEqual(3, len([x for x in accounts if 'roles' in x]))
+        for account in accounts:
+            self.assertIn('resources', account)
+            self.assertIn('network', account.get('resources'))
+
+    def test_dump_accounts_existing_file(self):
+        self.useFixture(fixtures.MockPatch('os.path.exists',
+                                           return_value=True))
+        rename_mock = self.useFixture(fixtures.MockPatch('os.rename')).mock
+        backup_file = '.'.join((self.opts.accounts, 'bak'))
+        mocked_open = mock.mock_open()
+        with mock.patch('{}.open'.format(account_generator.__name__),
+                        mocked_open, create=True):
+            with mock.patch('yaml.safe_dump') as yaml_dump_mock:
+                account_generator.setup_logging()
+                account_generator.dump_accounts(self.resources,
+                                                self.opts.identity_version,
+                                                self.opts.accounts)
+        rename_mock.assert_called_once_with(self.opts.accounts, backup_file)
+        mocked_open.assert_called_once_with(self.opts.accounts, 'w')
+        handle = mocked_open()
+        # Ordered args in [0], keyword args in [1]
+        accounts, f = yaml_dump_mock.call_args[0]
+        self.assertEqual(handle, f)
+        self.assertEqual(6, len(accounts))
+        if self.domain_is_in:
+            self.assertIn('domain_name', accounts[0].keys())
+        else:
+            self.assertNotIn('domain_name', accounts[0].keys())
+        self.assertEqual(1, len([x for x in accounts if
+                                 x.get('types') == ['admin']]))
+        self.assertEqual(3, len([x for x in accounts if 'roles' in x]))
+        for account in accounts:
+            self.assertIn('resources', account)
+            self.assertIn('network', account.get('resources'))
+
+
+class TestDumpAccountsV3(TestDumpAccountsV2):
+
+    identity_version = 3
+    identity_response = fake_identity._fake_v3_response
+    cred_client = 'tempest.common.cred_client.V3CredsClient'
+    domain_is_in = True
+
+    def setUp(self):
+        self.mock_domains()
+        super(TestDumpAccountsV3, self).setUp()