Split snapshot test in test_volume_quotas_negative

Split snapshot test.
Change snapshot test to skip if not enabled.
Fix related parameter.

Change-Id: Ia5b93d010c891141a0ca56955970df6785684a38
diff --git a/tempest/api/volume/admin/test_volume_quotas_negative.py b/tempest/api/volume/admin/test_volume_quotas_negative.py
index d1a6db0..ec61cf3 100644
--- a/tempest/api/volume/admin/test_volume_quotas_negative.py
+++ b/tempest/api/volume/admin/test_volume_quotas_negative.py
@@ -16,8 +16,11 @@
 from tempest_lib import exceptions as lib_exc
 
 from tempest.api.volume import base
+from tempest import config
 from tempest import test
 
+CONF = config.CONF
+
 
 class BaseVolumeQuotasNegativeV2TestJSON(base.BaseVolumeAdminTest):
     force_tenant_isolation = True
@@ -31,8 +34,8 @@
     def resource_setup(cls):
         super(BaseVolumeQuotasNegativeV2TestJSON, cls).resource_setup()
         cls.default_volume_size = cls.volumes_client.default_volume_size
-        cls.shared_quota_set = {'gigabytes': 3 * cls.default_volume_size,
-                                'volumes': 1, 'snapshots': 1}
+        cls.shared_quota_set = {'gigabytes': 2 * cls.default_volume_size,
+                                'volumes': 1}
 
         # NOTE(gfidente): no need to restore original quota set
         # after the tests as they only work with tenant isolation.
@@ -43,7 +46,6 @@
         # NOTE(gfidente): no need to delete in tearDown as
         # they are created using utility wrapper methods.
         cls.volume = cls.create_volume()
-        cls.snapshot = cls.create_snapshot(cls.volume['id'])
 
     @test.attr(type='negative')
     @test.idempotent_id('bf544854-d62a-47f2-a681-90f7a47d86b6')
@@ -52,13 +54,6 @@
                           self.volumes_client.create_volume)
 
     @test.attr(type='negative')
-    @test.idempotent_id('02bbf63f-6c05-4357-9d98-2926a94064ff')
-    def test_quota_volume_snapshots(self):
-        self.assertRaises(lib_exc.OverLimit,
-                          self.snapshots_client.create_snapshot,
-                          self.volume['id'])
-
-    @test.attr(type='negative')
     @test.idempotent_id('2dc27eee-8659-4298-b900-169d71a91374')
     def test_quota_volume_gigabytes(self):
         # NOTE(gfidente): quota set needs to be changed for this test
@@ -67,8 +62,7 @@
         self.addCleanup(self.quotas_client.update_quota_set,
                         self.demo_tenant_id,
                         **self.shared_quota_set)
-
-        new_quota_set = {'gigabytes': 2 * self.default_volume_size,
+        new_quota_set = {'gigabytes': self.default_volume_size,
                          'volumes': 2, 'snapshots': 1}
         self.quotas_client.update_quota_set(
             self.demo_tenant_id,
@@ -76,15 +70,6 @@
         self.assertRaises(lib_exc.OverLimit,
                           self.volumes_client.create_volume)
 
-        new_quota_set = {'gigabytes': 2 * self.default_volume_size,
-                         'volumes': 1, 'snapshots': 2}
-        self.quotas_client.update_quota_set(
-            self.demo_tenant_id,
-            **self.shared_quota_set)
-        self.assertRaises(lib_exc.OverLimit,
-                          self.snapshots_client.create_snapshot,
-                          self.volume['id'])
-
 
 class VolumeQuotasNegativeV1TestJSON(BaseVolumeQuotasNegativeV2TestJSON):
     _api_version = 1
diff --git a/tempest/api/volume/admin/test_volume_snapshot_quotas_negative.py b/tempest/api/volume/admin/test_volume_snapshot_quotas_negative.py
new file mode 100644
index 0000000..ce0b618
--- /dev/null
+++ b/tempest/api/volume/admin/test_volume_snapshot_quotas_negative.py
@@ -0,0 +1,81 @@
+# Copyright 2014 OpenStack Foundation
+# 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 import exceptions as lib_exc
+
+from tempest.api.volume import base
+from tempest import config
+from tempest import test
+
+CONF = config.CONF
+
+
+class VolumeSnapshotQuotasNegativeV2TestJSON(base.BaseVolumeAdminTest):
+    force_tenant_isolation = True
+
+    @classmethod
+    def skip_checks(cls):
+        super(VolumeSnapshotQuotasNegativeV2TestJSON, cls).skip_checks()
+        if not CONF.volume_feature_enabled.snapshot:
+            raise cls.skipException('Cinder volume snapshots are disabled')
+
+    @classmethod
+    def setup_credentials(cls):
+        super(VolumeSnapshotQuotasNegativeV2TestJSON, cls).setup_credentials()
+        cls.demo_tenant_id = cls.os.credentials.tenant_id
+
+    @classmethod
+    def resource_setup(cls):
+        super(VolumeSnapshotQuotasNegativeV2TestJSON, cls).resource_setup()
+        cls.default_volume_size = cls.volumes_client.default_volume_size
+        cls.shared_quota_set = {'gigabytes': 3 * cls.default_volume_size,
+                                'volumes': 1, 'snapshots': 1}
+
+        # NOTE(gfidente): no need to restore original quota set
+        # after the tests as they only work with tenant isolation.
+        cls.quotas_client.update_quota_set(
+            cls.demo_tenant_id,
+            **cls.shared_quota_set)
+
+        # NOTE(gfidente): no need to delete in tearDown as
+        # they are created using utility wrapper methods.
+        cls.volume = cls.create_volume()
+        cls.snapshot = cls.create_snapshot(cls.volume['id'])
+
+    @test.attr(type='negative')
+    @test.idempotent_id('02bbf63f-6c05-4357-9d98-2926a94064ff')
+    def test_quota_volume_snapshots(self):
+        self.assertRaises(lib_exc.OverLimit,
+                          self.snapshots_client.create_snapshot,
+                          self.volume['id'])
+
+    @test.attr(type='negative')
+    @test.idempotent_id('c99a1ca9-6cdf-498d-9fdf-25832babef27')
+    def test_quota_volume_gigabytes_snapshots(self):
+        self.addCleanup(self.quotas_client.update_quota_set,
+                        self.demo_tenant_id,
+                        **self.shared_quota_set)
+        new_quota_set = {'gigabytes': 2 * self.default_volume_size,
+                         'volumes': 1, 'snapshots': 2}
+        self.quotas_client.update_quota_set(
+            self.demo_tenant_id,
+            **new_quota_set)
+        self.assertRaises(lib_exc.OverLimit,
+                          self.snapshots_client.create_snapshot,
+                          self.volume['id'])
+
+
+class VolumeSnapshotNegativeV1TestJSON(VolumeSnapshotQuotasNegativeV2TestJSON):
+    _api_version = 1