Randomize administrative password for new server creation.

Fixes #164

mimic/model/nova_objects.py

@@ -6,8 +6,11 @@
 from random import randrange
 from json import loads, dumps
 
-from mimic.util.helper import seconds_to_timestamp
-from mimic.util.helper import invalid_resource
+from mimic.util.helper import (
+    seconds_to_timestamp,
+    invalid_resource,
+    random_string,
+)
 
 from twisted.web.http import ACCEPTED, NOT_FOUND
 
@@ -161,8 +164,7 @@ def from_creation_request_json(cls, collection, creation_json,
             disk_config="AUTO",
             # ^ TODO: https://github.com/rackerlabs/mimic/issues/163
             status="ACTIVE",
-            admin_password="testpassword",
-            # ^ TODO: https://github.com/rackerlabs/mimic/issues/164
+            admin_password=random_string(12),
         )
         collection.servers.append(self)
         return self

mimic/test/test_nova.py

@@ -72,6 +72,10 @@ def test_create_server(self):
         """
         self.assertEqual(self.create_server_response.code, 202)
         self.assertTrue(type(self.server_id), unicode)
+        self.assertNotEqual(
+            self.create_server_response_body['server']['adminPass'],
+            "testpassword"
+        )
         validate_link_json(self, self.create_server_response_body['server'])
 
     def test_list_servers(self):
@@ -131,6 +135,8 @@ def test_get_server(self):
                          self.server_id)
         self.assertEqual(
             get_server_response_body['server']['status'], 'ACTIVE')
+        admin_password = get_server_response_body['server'].get('adminPass', None)
+        self.assertEqual(admin_password, None)
         self.validate_server_detail_json(get_server_response_body['server'])
 
     def test_get_server_negative(self):

mimic/util/helper.py

@@ -7,14 +7,33 @@
 """
 import os
 from datetime import datetime, timedelta
-from random import randint
+from random import choice, randint
 
 from six import text_type
 
 
 fmt = '%Y-%m-%dT%H:%M:%S.%fZ'
 
 
+def random_string(length, selectable=None):
+    """
+    Create a random string of the specified length.
+
+    :param int length: How long the string must be.
+    :param str selectable: If left unspecified, the random character selection
+        will be taken from uppercase and lowercase letters, digits, and a few
+        punctuation marks.  Otherwise, the characters will be taken from the
+        string provided.
+    :returns: A string of length `length`.
+    """
+    selectable = selectable or (
+        "abcdefghijklmnopqrstuvwxyz"
+        "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+        "1234567890!@#$%^&*():;.,<>"
+    )
+    return ''.join([choice(selectable) for _ in xrange(length)])
+
+
 def random_ipv4(*numbers):
     """
     Return a random IPv4 address - parts of the IP address can be provided.