Refactor volume unit test with FakeVolume class in volume v1

FakeVolume class has been added in the fake.py in
volume v1, this patch refactors the volume command
unit tests with the FakeVolume class.

Change-Id: Ic3c1a46d5bff9048d0095f5739ae9e5a34ca6b5b

Author: Huanxuan Ao

openstackclient/tests/unit/volume/v1/fakes.py

@@ -363,24 +363,24 @@ def create_one_volume(attrs=None):
         # Set default attribute
         volume_info = {
             'id': 'volume-id' + uuid.uuid4().hex,
-            'name': 'volume-name' + uuid.uuid4().hex,
-            'description': 'description' + uuid.uuid4().hex,
-            'status': random.choice(['available', 'in_use']),
-            'size': random.randint(1, 20),
+            'display_name': 'volume-name' + uuid.uuid4().hex,
+            'display_description': 'description' + uuid.uuid4().hex,
+            'status': 'available',
+            'size': 10,
             'volume_type':
                 random.choice(['fake_lvmdriver-1', 'fake_lvmdriver-2']),
-            'bootable':
-                random.randint(0, 1),
+            'bootable': 'true',
             'metadata': {
                 'key' + uuid.uuid4().hex: 'val' + uuid.uuid4().hex,
                 'key' + uuid.uuid4().hex: 'val' + uuid.uuid4().hex,
                 'key' + uuid.uuid4().hex: 'val' + uuid.uuid4().hex},
-            'snapshot_id': random.randint(1, 5),
+            'snapshot_id': 'snapshot-id-' + uuid.uuid4().hex,
             'availability_zone': 'zone' + uuid.uuid4().hex,
             'attachments': [{
                 'device': '/dev/' + uuid.uuid4().hex,
                 'server_id': uuid.uuid4().hex,
             }, ],
+            'created_at': 'time-' + uuid.uuid4().hex,
         }
 
         # Overwrite default attributes if there are some attributes set