fix tox tool

Author: caberos

SoftLayer/CLI/file/detail.py

@@ -9,6 +9,13 @@
 from SoftLayer import utils
 
 
+def get_capacity(file_volume):
+    capacity = '0'
+    if file_volume['capacityGb'] != '':
+        capacity = "%iGB" % file_volume['capacityGb']
+    return capacity
+
+
 @click.command(cls=SoftLayer.CLI.command.SLCommand, )
 @click.argument('volume_id')
 @environment.pass_env
@@ -23,14 +30,11 @@ def cli(env, volume_id):
     table.align['Name'] = 'r'
     table.align['Value'] = 'l'
 
-    capacity = '0'
-    if file_volume['capacityGb'] != '':
-        capacity = "%iGB" % file_volume['capacityGb']
     storage_type = file_volume['storageType']['keyName'].split('_').pop(0)
     table.add_row(['ID', file_volume['id']])
     table.add_row(['Username', file_volume['username']])
     table.add_row(['Type', storage_type])
-    table.add_row(['Capacity (GB)', capacity])
+    table.add_row(['Capacity (GB)', get_capacity(file_volume['capacity'])])
 
     used_space = int(file_volume['bytesUsed']) \
         if file_volume['bytesUsed'] else 0