Remove special_fields definition

Since volume v1 test has been removed from Tempest, then
the difference of field name and description between v1 and v2
no longer exists, so we no longer need the special_fields
definition, this is to remove them for the code clean.

Change-Id: I82ba0607dda5a8a4b4badd406862dbfc02fbe7d3
diff --git a/tempest/api/volume/admin/test_multi_backend.py b/tempest/api/volume/admin/test_multi_backend.py
index 5230708..eea918a 100644
--- a/tempest/api/volume/admin/test_multi_backend.py
+++ b/tempest/api/volume/admin/test_multi_backend.py
@@ -36,7 +36,6 @@
         # read backend name from a list .
         backend_names = set(CONF.volume.backend_names)
 
-        cls.name_field = cls.special_fields['name_field']
         cls.volume_id_list_with_prefix = []
         cls.volume_id_list_without_prefix = []
 
@@ -65,7 +64,7 @@
         cls.create_volume_type(name=type_name,
                                extra_specs=extra_specs)
 
-        params = {cls.name_field: vol_name, 'volume_type': type_name,
+        params = {'name': vol_name, 'volume_type': type_name,
                   'size': CONF.volume.volume_size}
         cls.volume = cls.admin_volume_client.create_volume(
             **params)['volume']
diff --git a/tempest/api/volume/admin/test_volume_types.py b/tempest/api/volume/admin/test_volume_types.py
index f75c940..fd333eb 100644
--- a/tempest/api/volume/admin/test_volume_types.py
+++ b/tempest/api/volume/admin/test_volume_types.py
@@ -36,7 +36,6 @@
         # Create/update/get/delete volume with volume_type and extra spec.
         volume_types = list()
         vol_name = data_utils.rand_name(self.__class__.__name__ + '-volume')
-        name_field = self.special_fields['name_field']
         proto = CONF.volume.storage_protocol
         vendor = CONF.volume.vendor_name
         extra_specs = {"storage_protocol": proto,
@@ -46,14 +45,14 @@
             vol_type = self.create_volume_type(
                 extra_specs=extra_specs)
             volume_types.append(vol_type)
-        params = {name_field: vol_name,
+        params = {'name': vol_name,
                   'volume_type': volume_types[0]['id'],
                   'size': CONF.volume.volume_size}
 
         # Create volume
         volume = self.create_volume(**params)
         self.assertEqual(volume_types[0]['name'], volume["volume_type"])
-        self.assertEqual(volume[name_field], vol_name,
+        self.assertEqual(volume['name'], vol_name,
                          "The created volume name is not equal "
                          "to the requested name")
         self.assertIsNotNone(volume['id'],
@@ -74,7 +73,7 @@
                          fetched_volume['volume_type'],
                          'The fetched Volume type is different '
                          'from updated volume type')
-        self.assertEqual(vol_name, fetched_volume[name_field],
+        self.assertEqual(vol_name, fetched_volume['name'],
                          'The fetched Volume is different '
                          'from the created Volume')
         self.assertEqual(volume['id'], fetched_volume['id'],
diff --git a/tempest/api/volume/admin/test_volume_types_negative.py b/tempest/api/volume/admin/test_volume_types_negative.py
index 8d0bf4a..4017de6 100644
--- a/tempest/api/volume/admin/test_volume_types_negative.py
+++ b/tempest/api/volume/admin/test_volume_types_negative.py
@@ -26,8 +26,7 @@
     @decorators.idempotent_id('b48c98f2-e662-4885-9b71-032256906314')
     def test_create_with_nonexistent_volume_type(self):
         # Should not be able to create volume with nonexistent volume_type.
-        name_field = self.special_fields['name_field']
-        params = {name_field: data_utils.rand_uuid(),
+        params = {'name': data_utils.rand_uuid(),
                   'volume_type': data_utils.rand_uuid()}
         self.assertRaises(lib_exc.NotFound,
                           self.volumes_client.create_volume, **params)
diff --git a/tempest/api/volume/base.py b/tempest/api/volume/base.py
index f794920..5e4fada 100644
--- a/tempest/api/volume/base.py
+++ b/tempest/api/volume/base.py
@@ -80,9 +80,6 @@
         cls.build_interval = CONF.volume.build_interval
         cls.build_timeout = CONF.volume.build_timeout
 
-        cls.special_fields = {'name_field': 'name',
-                              'descrip_field': 'description'}
-
     @classmethod
     def resource_cleanup(cls):
         cls.clear_snapshots()
@@ -104,10 +101,9 @@
             min_disk = image.get('minDisk')
             kwargs['size'] = max(kwargs['size'], min_disk)
 
-        name_field = cls.special_fields['name_field']
-        if name_field not in kwargs:
+        if 'name' not in kwargs:
             name = data_utils.rand_name(cls.__name__ + '-Volume')
-            kwargs[name_field] = name
+            kwargs['name'] = name
 
         volume = cls.volumes_client.create_volume(**kwargs)['volume']
         cls.volumes.append(volume)
@@ -118,10 +114,9 @@
     @classmethod
     def create_snapshot(cls, volume_id=1, **kwargs):
         """Wrapper utility that returns a test snapshot."""
-        name_field = cls.special_fields['name_field']
-        if name_field not in kwargs:
+        if 'name' not in kwargs:
             name = data_utils.rand_name(cls.__name__ + '-Snapshot')
-            kwargs[name_field] = name
+            kwargs['name'] = name
 
         snapshot = cls.snapshots_client.create_snapshot(
             volume_id=volume_id, **kwargs)['snapshot']
diff --git a/tempest/api/volume/test_volumes_get.py b/tempest/api/volume/test_volumes_get.py
index 8014e62..9eff97a 100644
--- a/tempest/api/volume/test_volumes_get.py
+++ b/tempest/api/volume/test_volumes_get.py
@@ -29,22 +29,19 @@
 class VolumesV2GetTest(base.BaseVolumeTest):
 
     def _volume_create_get_update_delete(self, **kwargs):
-        name_field = self.special_fields['name_field']
-        descrip_field = self.special_fields['descrip_field']
-
         # Create a volume, Get it's details and Delete the volume
         v_name = data_utils.rand_name(self.__class__.__name__ + '-Volume')
         metadata = {'Type': 'Test'}
         # Create a volume
-        kwargs[name_field] = v_name
+        kwargs['name'] = v_name
         kwargs['metadata'] = metadata
         volume = self.volumes_client.create_volume(**kwargs)['volume']
         self.assertIn('id', volume)
         self.addCleanup(self.delete_volume, self.volumes_client, volume['id'])
         waiters.wait_for_volume_resource_status(self.volumes_client,
                                                 volume['id'], 'available')
-        self.assertIn(name_field, volume)
-        self.assertEqual(volume[name_field], v_name,
+        self.assertIn('name', volume)
+        self.assertEqual(volume['name'], v_name,
                          "The created volume name is not equal "
                          "to the requested name")
 
@@ -52,7 +49,7 @@
         fetched_volume = self.volumes_client.show_volume(
             volume['id'])['volume']
         self.assertEqual(v_name,
-                         fetched_volume[name_field],
+                         fetched_volume['name'],
                          'The fetched Volume name is different '
                          'from the created Volume')
         self.assertEqual(volume['id'],
@@ -71,25 +68,25 @@
 
         # Update Volume
         # Test volume update when display_name is same with original value
-        params = {name_field: v_name}
+        params = {'name': v_name}
         self.volumes_client.update_volume(volume['id'], **params)
         # Test volume update when display_name is new
         new_v_name = data_utils.rand_name(
             self.__class__.__name__ + '-new-Volume')
         new_desc = 'This is the new description of volume'
-        params = {name_field: new_v_name,
-                  descrip_field: new_desc}
+        params = {'name': new_v_name,
+                  'description': new_desc}
         update_volume = self.volumes_client.update_volume(
             volume['id'], **params)['volume']
         # Assert response body for update_volume method
-        self.assertEqual(new_v_name, update_volume[name_field])
-        self.assertEqual(new_desc, update_volume[descrip_field])
+        self.assertEqual(new_v_name, update_volume['name'])
+        self.assertEqual(new_desc, update_volume['description'])
         # Assert response body for show_volume method
         updated_volume = self.volumes_client.show_volume(
             volume['id'])['volume']
         self.assertEqual(volume['id'], updated_volume['id'])
-        self.assertEqual(new_v_name, updated_volume[name_field])
-        self.assertEqual(new_desc, updated_volume[descrip_field])
+        self.assertEqual(new_v_name, updated_volume['name'])
+        self.assertEqual(new_desc, updated_volume['description'])
         self.assertThat(updated_volume['metadata'].items(),
                         matchers.ContainsAll(metadata.items()),
                         'The fetched Volume metadata misses data '
@@ -99,7 +96,7 @@
         # contains specific characters,
         # then test volume update if display_name is duplicated
         new_v_desc = data_utils.rand_name('@#$%^* description')
-        params = {descrip_field: new_v_desc,
+        params = {'description': new_v_desc,
                   'availability_zone': volume['availability_zone'],
                   'size': CONF.volume.volume_size}
         new_volume = self.volumes_client.create_volume(**params)['volume']
@@ -109,8 +106,8 @@
         waiters.wait_for_volume_resource_status(self.volumes_client,
                                                 new_volume['id'], 'available')
 
-        params = {name_field: volume[name_field],
-                  descrip_field: volume[descrip_field]}
+        params = {'name': volume['name'],
+                  'description': volume['description']}
         self.volumes_client.update_volume(new_volume['id'], **params)
 
         if 'imageRef' in kwargs:
diff --git a/tempest/api/volume/test_volumes_negative.py b/tempest/api/volume/test_volumes_negative.py
index da11ed9..8990a15 100644
--- a/tempest/api/volume/test_volumes_negative.py
+++ b/tempest/api/volume/test_volumes_negative.py
@@ -26,8 +26,6 @@
     def resource_setup(cls):
         super(VolumesV2NegativeTest, cls).resource_setup()
 
-        cls.name_field = cls.special_fields['name_field']
-
         # Create a test shared instance and volume for attach/detach tests
         cls.volume = cls.create_volume()
         cls.mountpoint = "/dev/vdc"
@@ -52,7 +50,7 @@
         # Should not be able to create volume with invalid size
         # in request
         v_name = data_utils.rand_name(self.__class__.__name__ + '-Volume')
-        params = {self.name_field: v_name}
+        params = {'name': v_name}
         self.assertRaises(lib_exc.BadRequest,
                           self.volumes_client.create_volume,
                           size='#$%', params=params)
@@ -63,7 +61,7 @@
         # Should not be able to create volume without passing size
         # in request
         v_name = data_utils.rand_name(self.__class__.__name__ + '-Volume')
-        params = {self.name_field: v_name}
+        params = {'name': v_name}
         self.assertRaises(lib_exc.BadRequest,
                           self.volumes_client.create_volume,
                           size='', params=params)
@@ -73,7 +71,7 @@
     def test_create_volume_with_size_zero(self):
         # Should not be able to create volume with size zero
         v_name = data_utils.rand_name(self.__class__.__name__ + '-Volume')
-        params = {self.name_field: v_name}
+        params = {'name': v_name}
         self.assertRaises(lib_exc.BadRequest,
                           self.volumes_client.create_volume,
                           size='0', params=params)
@@ -83,7 +81,7 @@
     def test_create_volume_with_size_negative(self):
         # Should not be able to create volume with size negative
         v_name = data_utils.rand_name(self.__class__.__name__ + '-Volume')
-        params = {self.name_field: v_name}
+        params = {'name': v_name}
         self.assertRaises(lib_exc.BadRequest,
                           self.volumes_client.create_volume,
                           size='-1', params=params)
@@ -93,7 +91,7 @@
     def test_create_volume_with_nonexistent_volume_type(self):
         # Should not be able to create volume with non-existent volume type
         v_name = data_utils.rand_name(self.__class__.__name__ + '-Volume')
-        params = {self.name_field: v_name}
+        params = {'name': v_name}
         self.assertRaises(lib_exc.NotFound, self.volumes_client.create_volume,
                           size='1', volume_type=data_utils.rand_uuid(),
                           params=params)
@@ -103,7 +101,7 @@
     def test_create_volume_with_nonexistent_snapshot_id(self):
         # Should not be able to create volume with non-existent snapshot
         v_name = data_utils.rand_name(self.__class__.__name__ + '-Volume')
-        params = {self.name_field: v_name}
+        params = {'name': v_name}
         self.assertRaises(lib_exc.NotFound, self.volumes_client.create_volume,
                           size='1', snapshot_id=data_utils.rand_uuid(),
                           params=params)
@@ -113,7 +111,7 @@
     def test_create_volume_with_nonexistent_source_volid(self):
         # Should not be able to create volume with non-existent source volume
         v_name = data_utils.rand_name(self.__class__.__name__ + '-Volume')
-        params = {self.name_field: v_name}
+        params = {'name': v_name}
         self.assertRaises(lib_exc.NotFound, self.volumes_client.create_volume,
                           size='1', source_volid=data_utils.rand_uuid(),
                           params=params)
@@ -122,7 +120,7 @@
     @decorators.idempotent_id('0186422c-999a-480e-a026-6a665744c30c')
     def test_update_volume_with_nonexistent_volume_id(self):
         v_name = data_utils.rand_name(self.__class__.__name__ + '-Volume')
-        params = {self.name_field: v_name}
+        params = {'name': v_name}
         self.assertRaises(lib_exc.NotFound, self.volumes_client.update_volume,
                           volume_id=data_utils.rand_uuid(), params=params)
 
@@ -130,7 +128,7 @@
     @decorators.idempotent_id('e66e40d6-65e6-4e75-bdc7-636792fa152d')
     def test_update_volume_with_invalid_volume_id(self):
         v_name = data_utils.rand_name(self.__class__.__name__ + '-Volume')
-        params = {self.name_field: v_name}
+        params = {'name': v_name}
         self.assertRaises(lib_exc.NotFound, self.volumes_client.update_volume,
                           volume_id=data_utils.rand_name('invalid'),
                           params=params)
@@ -139,7 +137,7 @@
     @decorators.idempotent_id('72aeca85-57a5-4c1f-9057-f320f9ea575b')
     def test_update_volume_with_empty_volume_id(self):
         v_name = data_utils.rand_name(self.__class__.__name__ + '-Volume')
-        params = {self.name_field: v_name}
+        params = {'name': v_name}
         self.assertRaises(lib_exc.NotFound, self.volumes_client.update_volume,
                           volume_id='', params=params)
 
@@ -263,7 +261,7 @@
     @decorators.idempotent_id('0f4aa809-8c7b-418f-8fb3-84c7a5dfc52f')
     def test_list_volumes_with_nonexistent_name(self):
         v_name = data_utils.rand_name(self.__class__.__name__ + '-Volume')
-        params = {self.name_field: v_name}
+        params = {'name': v_name}
         fetched_volume = self.volumes_client.list_volumes(
             params=params)['volumes']
         self.assertEqual(0, len(fetched_volume))
@@ -272,7 +270,7 @@
     @decorators.idempotent_id('9ca17820-a0e7-4cbd-a7fa-f4468735e359')
     def test_list_volumes_detail_with_nonexistent_name(self):
         v_name = data_utils.rand_name(self.__class__.__name__ + '-Volume')
-        params = {self.name_field: v_name}
+        params = {'name': v_name}
         fetched_volume = \
             self.volumes_client.list_volumes(
                 detail=True, params=params)['volumes']
diff --git a/tempest/api/volume/test_volumes_snapshots.py b/tempest/api/volume/test_volumes_snapshots.py
index ce93512..82f456b 100644
--- a/tempest/api/volume/test_volumes_snapshots.py
+++ b/tempest/api/volume/test_volumes_snapshots.py
@@ -33,8 +33,6 @@
     def resource_setup(cls):
         super(VolumesV2SnapshotTestJSON, cls).resource_setup()
         cls.volume_origin = cls.create_volume()
-        cls.name_field = cls.special_fields['name_field']
-        cls.descrip_field = cls.special_fields['descrip_field']
 
     @decorators.idempotent_id('b467b54c-07a4-446d-a1cf-651dedcc3ff1')
     @test.services('compute')
@@ -110,27 +108,27 @@
                         matchers.ContainsAll(metadata.items()))
 
         # Compare also with the output from the list action
-        tracking_data = (snapshot['id'], snapshot[self.name_field])
+        tracking_data = (snapshot['id'], snapshot['name'])
         snaps_list = self.snapshots_client.list_snapshots()['snapshots']
-        snaps_data = [(f['id'], f[self.name_field]) for f in snaps_list]
+        snaps_data = [(f['id'], f['name']) for f in snaps_list]
         self.assertIn(tracking_data, snaps_data)
 
         # Updates snapshot with new values
         new_s_name = data_utils.rand_name(
             self.__class__.__name__ + '-new-snap')
         new_desc = 'This is the new description of snapshot.'
-        params = {self.name_field: new_s_name,
-                  self.descrip_field: new_desc}
+        params = {'name': new_s_name,
+                  'description': new_desc}
         update_snapshot = self.snapshots_client.update_snapshot(
             snapshot['id'], **params)['snapshot']
         # Assert response body for update_snapshot method
-        self.assertEqual(new_s_name, update_snapshot[self.name_field])
-        self.assertEqual(new_desc, update_snapshot[self.descrip_field])
+        self.assertEqual(new_s_name, update_snapshot['name'])
+        self.assertEqual(new_desc, update_snapshot['description'])
         # Assert response body for show_snapshot method
         updated_snapshot = self.snapshots_client.show_snapshot(
             snapshot['id'])['snapshot']
-        self.assertEqual(new_s_name, updated_snapshot[self.name_field])
-        self.assertEqual(new_desc, updated_snapshot[self.descrip_field])
+        self.assertEqual(new_s_name, updated_snapshot['name'])
+        self.assertEqual(new_desc, updated_snapshot['description'])
 
         # Delete the snapshot
         self.delete_snapshot(snapshot['id'])
diff --git a/tempest/api/volume/test_volumes_snapshots_list.py b/tempest/api/volume/test_volumes_snapshots_list.py
index 237b276..0ea8ec7 100644
--- a/tempest/api/volume/test_volumes_snapshots_list.py
+++ b/tempest/api/volume/test_volumes_snapshots_list.py
@@ -29,7 +29,6 @@
     def resource_setup(cls):
         super(VolumesV2SnapshotListTestJSON, cls).resource_setup()
         volume_origin = cls.create_volume()
-        cls.name_field = cls.special_fields['name_field']
         # Create snapshots with params
         for _ in range(2):
             cls.snapshot = cls.create_snapshot(volume_origin['id'])
@@ -59,7 +58,7 @@
     def test_snapshots_list_with_params(self):
         """list snapshots with params."""
         # Verify list snapshots by display_name filter
-        params = {self.name_field: self.snapshot[self.name_field]}
+        params = {'name': self.snapshot['name']}
         self._list_by_param_values_and_assert(**params)
 
         # Verify list snapshots by status filter
@@ -68,21 +67,21 @@
 
         # Verify list snapshots by status and display name filter
         params = {'status': 'available',
-                  self.name_field: self.snapshot[self.name_field]}
+                  'name': self.snapshot['name']}
         self._list_by_param_values_and_assert(**params)
 
     @decorators.idempotent_id('220a1022-1fcd-4a74-a7bd-6b859156cda2')
     def test_snapshots_list_details_with_params(self):
         """list snapshot details with params."""
         # Verify list snapshot details by display_name filter
-        params = {self.name_field: self.snapshot[self.name_field]}
+        params = {'name': self.snapshot['name']}
         self._list_by_param_values_and_assert(with_detail=True, **params)
         # Verify list snapshot details by status filter
         params = {'status': 'available'}
         self._list_by_param_values_and_assert(with_detail=True, **params)
         # Verify list snapshot details by status and display name filter
         params = {'status': 'available',
-                  self.name_field: self.snapshot[self.name_field]}
+                  'name': self.snapshot['name']}
         self._list_by_param_values_and_assert(with_detail=True, **params)
 
     @decorators.idempotent_id('db4d8e0a-7a2e-41cc-a712-961f6844e896')