check products in the right path

tests/__init__.py

@@ -45,8 +45,8 @@ class ERP5(_ERP5):
 
   def getTestList(self):
     test_list = []
-    for test_path in glob.glob('product/*/tests/test*.py') + \
-                     glob.glob('bt5/*/TestTemplateItem/test*.py'):
+    for test_path in glob.glob('%s/product/*/tests/test*.py' % sys.path[0]) + \
+                 glob.glob('%s/bt5/*/TestTemplateItem/test*.py' % sys.path[0]):
       test_case = test_path.split(os.sep)[-1][:-3] # remove .py
       product = test_path.split(os.sep)[-3]
       # don't test 3rd party products