Sahara: add API tests for data sources

* create/list/get/delete API tests for data sources in Swift were added
* create/list/get/delete API tests for data sources in local HDFS
  were added
* create/list/get/delete API tests for data sources in external HDFS
  were added

Partially implements: blueprint savanna-api-tests

Change-Id: I78fe5c53d3af84c04402966891c096c8cbd1253a
diff --git a/tempest/api/data_processing/test_data_sources.py b/tempest/api/data_processing/test_data_sources.py
new file mode 100644
index 0000000..c72e828
--- /dev/null
+++ b/tempest/api/data_processing/test_data_sources.py
@@ -0,0 +1,154 @@
+# Copyright (c) 2014 Mirantis 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.
+
+from tempest.api.data_processing import base as dp_base
+from tempest.common.utils import data_utils
+from tempest import config
+from tempest import test
+
+CONF = config.CONF
+
+
+class DataSourceTest(dp_base.BaseDataProcessingTest):
+    @classmethod
+    def setUpClass(cls):
+        super(DataSourceTest, cls).setUpClass()
+        cls.swift_data_source_with_creds = {
+            'url': 'swift://sahara-container.sahara/input-source',
+            'description': 'Test data source',
+            'credentials': {
+                'user': CONF.identity.username,
+                'password': CONF.identity.password
+            },
+            'type': 'swift'
+        }
+        cls.swift_data_source = cls.swift_data_source_with_creds.copy()
+        del cls.swift_data_source['credentials']
+
+        cls.local_hdfs_data_source = {
+            'url': 'input-source',
+            'description': 'Test data source',
+            'type': 'hdfs'
+        }
+
+        cls.external_hdfs_data_source = {
+            'url': 'hdfs://172.18.168.2:8020/usr/hadoop/input-source',
+            'description': 'Test data source',
+            'type': 'hdfs'
+        }
+
+    def _create_data_source(self, source_body, source_name=None):
+        """Creates Data Source with optional name specified.
+
+        It creates a link to input-source file (it may not exist) and ensures
+        response status and source name. Returns id and name of created source.
+        """
+        if not source_name:
+            # generate random name if it's not specified
+            source_name = data_utils.rand_name('sahara-data-source')
+
+        # create data source
+        resp, body = self.create_data_source(source_name, **source_body)
+
+        # ensure that source created successfully
+        self.assertEqual(202, resp.status)
+        self.assertEqual(source_name, body['name'])
+        if source_body['type'] == 'swift':
+            source_body = self.swift_data_source
+        self.assertDictContainsSubset(source_body, body)
+
+        return body['id'], source_name
+
+    def _list_data_sources(self, source_info):
+        # check for data source in list
+        resp, sources = self.client.list_data_sources()
+        self.assertEqual(200, resp.status)
+        sources_info = [(source['id'], source['name']) for source in sources]
+        self.assertIn(source_info, sources_info)
+
+    def _get_data_source(self, source_id, source_name, source_body):
+        # check data source fetch by id
+        resp, source = self.client.get_data_source(source_id)
+        self.assertEqual(200, resp.status)
+        self.assertEqual(source_name, source['name'])
+        self.assertDictContainsSubset(source_body, source)
+
+    def _delete_data_source(self, source_id):
+        # delete the data source by id
+        resp = self.client.delete_data_source(source_id)[0]
+        self.assertEqual(204, resp.status)
+
+    @test.attr(type='smoke')
+    def test_swift_data_source_create(self):
+        self._create_data_source(self.swift_data_source_with_creds)
+
+    @test.attr(type='smoke')
+    def test_swift_data_source_list(self):
+        source_info = self._create_data_source(
+            self.swift_data_source_with_creds)
+        self._list_data_sources(source_info)
+
+    @test.attr(type='smoke')
+    def test_swift_data_source_get(self):
+        source_id, source_name = self._create_data_source(
+            self.swift_data_source_with_creds)
+        self._get_data_source(source_id, source_name, self.swift_data_source)
+
+    @test.attr(type='smoke')
+    def test_swift_data_source_delete(self):
+        source_id = self._create_data_source(
+            self.swift_data_source_with_creds)[0]
+        self._delete_data_source(source_id)
+
+    @test.attr(type='smoke')
+    def test_local_hdfs_data_source_create(self):
+        self._create_data_source(self.local_hdfs_data_source)
+
+    @test.attr(type='smoke')
+    def test_local_hdfs_data_source_list(self):
+        source_info = self._create_data_source(self.local_hdfs_data_source)
+        self._list_data_sources(source_info)
+
+    @test.attr(type='smoke')
+    def test_local_hdfs_data_source_get(self):
+        source_id, source_name = self._create_data_source(
+            self.local_hdfs_data_source)
+        self._get_data_source(
+            source_id, source_name, self.local_hdfs_data_source)
+
+    @test.attr(type='smoke')
+    def test_local_hdfs_data_source_delete(self):
+        source_id = self._create_data_source(self.local_hdfs_data_source)[0]
+        self._delete_data_source(source_id)
+
+    @test.attr(type='smoke')
+    def test_external_hdfs_data_source_create(self):
+        self._create_data_source(self.external_hdfs_data_source)
+
+    @test.attr(type='smoke')
+    def test_external_hdfs_data_source_list(self):
+        source_info = self._create_data_source(self.external_hdfs_data_source)
+        self._list_data_sources(source_info)
+
+    @test.attr(type='smoke')
+    def test_external_hdfs_data_source_get(self):
+        source_id, source_name = self._create_data_source(
+            self.external_hdfs_data_source)
+        self._get_data_source(
+            source_id, source_name, self.external_hdfs_data_source)
+
+    @test.attr(type='smoke')
+    def test_external_hdfs_data_source_delete(self):
+        source_id = self._create_data_source(self.external_hdfs_data_source)[0]
+        self._delete_data_source(source_id)