Define v2 identity_client as library

Migrate identity v2 API identity_client to tempest.lib and implement
unit test for the service clients.
Partially implements blueprint consistent-service-method-names

Change-Id: I243af8583d5b497f7df3ce5dd39fe1dbd3ce0eca
diff --git a/releasenotes/notes/add-new-identity-clients-as-library-5f7ndha733nwdsn9.yaml b/releasenotes/notes/add-new-identity-clients-as-library-5f7ndha733nwdsn9.yaml
new file mode 100644
index 0000000..b8a8491
--- /dev/null
+++ b/releasenotes/notes/add-new-identity-clients-as-library-5f7ndha733nwdsn9.yaml
@@ -0,0 +1,8 @@
+---
+features:
+  - |
+    Define identity service clients as libraries
+    Add new service clients to the library interface so the other projects can use these modules as stable libraries without
+    any maintenance changes.
+
+      * identity_client(v2)
diff --git a/tempest/common/cred_client.py b/tempest/common/cred_client.py
index 4e3c395..d8b808b 100644
--- a/tempest/common/cred_client.py
+++ b/tempest/common/cred_client.py
@@ -17,7 +17,7 @@
 
 from tempest.lib import auth
 from tempest.lib import exceptions as lib_exc
-from tempest.services.identity.v2.json import identity_client as v2_identity
+from tempest.lib.services.identity.v2 import identity_client as v2_identity
 
 LOG = logging.getLogger(__name__)
 
diff --git a/tempest/services/identity/v2/json/identity_client.py b/tempest/lib/services/identity/v2/identity_client.py
similarity index 100%
rename from tempest/services/identity/v2/json/identity_client.py
rename to tempest/lib/services/identity/v2/identity_client.py
diff --git a/tempest/services/identity/v2/__init__.py b/tempest/services/identity/v2/__init__.py
index ac2a874..b7d3c74 100644
--- a/tempest/services/identity/v2/__init__.py
+++ b/tempest/services/identity/v2/__init__.py
@@ -13,12 +13,12 @@
 # the License.
 
 from tempest.lib.services.identity.v2.endpoints_client import EndpointsClient
+from tempest.lib.services.identity.v2.identity_client import IdentityClient
 from tempest.lib.services.identity.v2.roles_client import RolesClient
 from tempest.lib.services.identity.v2.services_client import ServicesClient
 from tempest.lib.services.identity.v2.tenants_client import TenantsClient
 from tempest.lib.services.identity.v2.token_client import TokenClient
 from tempest.lib.services.identity.v2.users_client import UsersClient
-from tempest.services.identity.v2.json.identity_client import IdentityClient
 
-__all__ = ['EndpointsClient', 'TokenClient', 'IdentityClient', 'RolesClient',
-           'ServicesClient', 'TenantsClient', 'UsersClient']
+__all__ = ['EndpointsClient', 'IdentityClient', 'RolesClient',
+           'ServicesClient', 'TenantsClient', 'TokenClient', 'UsersClient']
diff --git a/tempest/tests/common/test_dynamic_creds.py b/tempest/tests/common/test_dynamic_creds.py
index e7b9a4c..8c74d9c 100644
--- a/tempest/tests/common/test_dynamic_creds.py
+++ b/tempest/tests/common/test_dynamic_creds.py
@@ -22,6 +22,7 @@
 from tempest import exceptions
 from tempest.lib.common import rest_client
 from tempest.lib import exceptions as lib_exc
+from tempest.lib.services.identity.v2 import identity_client as v2_iden_client
 from tempest.lib.services.identity.v2 import roles_client as v2_roles_client
 from tempest.lib.services.identity.v2 import tenants_client as \
     v2_tenants_client
@@ -31,7 +32,6 @@
     v3_projects_client
 from tempest.lib.services.identity.v3 import token_client as v3_token_client
 from tempest.lib.services.network import routers_client
-from tempest.services.identity.v2.json import identity_client as v2_iden_client
 from tempest.services.identity.v3.json import domains_client
 from tempest.services.identity.v3.json import identity_client as v3_iden_client
 from tempest.services.identity.v3.json import roles_client as v3_roles_client
diff --git a/tempest/tests/lib/services/identity/v2/test_identity_client.py b/tempest/tests/lib/services/identity/v2/test_identity_client.py
new file mode 100644
index 0000000..96d50d7
--- /dev/null
+++ b/tempest/tests/lib/services/identity/v2/test_identity_client.py
@@ -0,0 +1,175 @@
+# Copyright 2016 NEC Corporation.  All rights reserved.
+#
+# 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.
+
+from tempest.lib.services.identity.v2 import identity_client
+from tempest.tests.lib import fake_auth_provider
+from tempest.tests.lib.services import base
+
+
+class TestIdentityClient(base.BaseServiceTest):
+    FAKE_TOKEN = {
+        "tokens": {
+            "id": "cbc36478b0bd8e67e89",
+            "name": "FakeToken",
+            "type": "token",
+        }
+    }
+
+    FAKE_API_INFO = {
+        "name": "API_info",
+        "type": "API",
+        "description": "test_description"
+    }
+
+    FAKE_LIST_EXTENSIONS = {
+        "extensions": {
+            "values": [
+                {
+                    "updated": "2013-07-07T12:00:0-00:00",
+                    "name": "OpenStack S3 API",
+                    "links": [
+                        {
+                            "href": "https://github.com/openstack/" +
+                                    "identity-api",
+                            "type": "text/html",
+                            "rel": "describedby"
+                        }
+                    ],
+                    "namespace": "http://docs.openstack.org/identity/" +
+                                 "api/ext/s3tokens/v1.0",
+                    "alias": "s3tokens",
+                    "description": "OpenStack S3 API."
+                },
+                {
+                    "updated": "2013-12-17T12:00:0-00:00",
+                    "name": "OpenStack Federation APIs",
+                    "links": [
+                        {
+                            "href": "https://github.com/openstack/" +
+                                    "identity-api",
+                            "type": "text/html",
+                            "rel": "describedby"
+                        }
+                    ],
+                    "namespace": "http://docs.openstack.org/identity/" +
+                                 "api/ext/OS-FEDERATION/v1.0",
+                    "alias": "OS-FEDERATION",
+                    "description": "OpenStack Identity Providers Mechanism."
+                },
+                {
+                    "updated": "2014-01-20T12:00:0-00:00",
+                    "name": "OpenStack Simple Certificate API",
+                    "links": [
+                        {
+                            "href": "https://github.com/openstack/" +
+                                    "identity-api",
+                            "type": "text/html",
+                            "rel": "describedby"
+                        }
+                    ],
+                    "namespace": "http://docs.openstack.org/identity/api/" +
+                                 "ext/OS-SIMPLE-CERT/v1.0",
+                    "alias": "OS-SIMPLE-CERT",
+                    "description": "OpenStack simple certificate extension"
+                },
+                {
+                    "updated": "2013-07-07T12:00:0-00:00",
+                    "name": "OpenStack OAUTH1 API",
+                    "links": [
+                        {
+                            "href": "https://github.com/openstack/" +
+                                    "identity-api",
+                            "type": "text/html",
+                            "rel": "describedby"
+                        }
+                    ],
+                    "namespace": "http://docs.openstack.org/identity/" +
+                                 "api/ext/OS-OAUTH1/v1.0",
+                    "alias": "OS-OAUTH1",
+                    "description": "OpenStack OAuth Delegated Auth Mechanism."
+                },
+                {
+                    "updated": "2013-07-07T12:00:0-00:00",
+                    "name": "OpenStack EC2 API",
+                    "links": [
+                        {
+                            "href": "https://github.com/openstack/" +
+                                    "identity-api",
+                            "type": "text/html",
+                            "rel": "describedby"
+                        }
+                    ],
+                    "namespace": "http://docs.openstack.org/identity/api/" +
+                                 "ext/OS-EC2/v1.0",
+                    "alias": "OS-EC2",
+                    "description": "OpenStack EC2 Credentials backend."
+                }
+            ]
+        }
+    }
+
+    def setUp(self):
+        super(TestIdentityClient, self).setUp()
+        fake_auth = fake_auth_provider.FakeAuthProvider()
+        self.client = identity_client.IdentityClient(fake_auth,
+                                                     'identity',
+                                                     'regionOne')
+
+    def _test_show_api_description(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.show_api_description,
+            'tempest.lib.common.rest_client.RestClient.get',
+            self.FAKE_API_INFO,
+            bytes_body)
+
+    def _test_list_extensions(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.list_extensions,
+            'tempest.lib.common.rest_client.RestClient.get',
+            self.FAKE_LIST_EXTENSIONS,
+            bytes_body)
+
+    def _test_show_token(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.show_token,
+            'tempest.lib.common.rest_client.RestClient.get',
+            self.FAKE_TOKEN,
+            bytes_body,
+            token_id="cbc36478b0bd8e67e89")
+
+    def test_show_api_description_with_str_body(self):
+        self._test_show_api_description()
+
+    def test_show_api_description_with_bytes_body(self):
+        self._test_show_api_description(bytes_body=True)
+
+    def test_show_list_extensions_with_str_body(self):
+        self._test_list_extensions()
+
+    def test_show_list_extensions_with_bytes_body(self):
+        self._test_list_extensions(bytes_body=True)
+
+    def test_show_token_with_str_body(self):
+        self._test_show_token()
+
+    def test_show_token_with_bytes_body(self):
+        self._test_show_token(bytes_body=True)
+
+    def test_delete_token(self):
+        self.check_service_client_function(
+            self.client.delete_token,
+            'tempest.lib.common.rest_client.RestClient.delete',
+            {},
+            token_id="cbc36478b0bd8e67e89",
+            status=204)