[FIX] res_partner: default image in testing

When in testing mode there is no need to compute the default image. Indeed
this information is rarely necessary for testing purpose. For the whole set
of Odoo tests, removing the default image computation in test mode makes
a gain of ~10 minuts of computation.

openerp/addons/base/res/res_partner.py

@@ -7,6 +7,7 @@ import hashlib
 from lxml import etree
 import math
 import pytz
+import threading
 import urllib2
 import urlparse
 
@@ -17,7 +18,6 @@ from openerp.osv.expression import get_unaccent_wrapper
 from openerp.tools.translate import _
 from openerp.exceptions import UserError
 
-
 ADDRESS_FORMAT_LAYOUTS = {
     '%(city)s %(state_code)s\n%(zip)s': """
         <div class="address_format">
@@ -305,6 +305,9 @@ class res_partner(osv.Model, format_address):
 
     @api.model
     def _get_default_image(self, partner_type, is_company, parent_id):
+        if getattr(threading.currentThread(), 'testing', False):
+            return False
+
         colorize, img_path, image = False, False, False
 
         if partner_type in ['contact', 'other'] and parent_id: