Exception: testmanager.listRootCatalogs: object of type 'type' has no len()

[roman.gerhardt@…]

How to Reproduce

While doing a GET operation on /rpc, Trac issued an internal error.

If I deaktivate the TestManagerRPC Component the GET operation on '/rpc' works fine

Request parameters:

{}

User agent: Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:37.0) Gecko/20100101 Firefox/37.0

System Information

Trac	1.0.5
Genshi	0.7 (with speedups)
pysqlite	2.6.0
Python	2.7.5 (default, Jun 17 2014, 18:11:42) [GCC 4.8.2 20140120 (Red Hat 4.8.2-16)]
RPC	1.1.2
setuptools	0.9.8
SQLite	3.7.17
jQuery	1.7.2
jQuery UI	1.8.21
jQuery Timepicker	1.0.1

Enabled Plugins

graphviz	0.7.7dev
siteupload	0.11
Table-Sorter-Plugin	1.0
TestManager	1.8.2
TracForms	0.5dev
TracGenericClass	1.1.6
TracGenericWorkflow	1.0.5
TracIniAdminPanel	1.0.1
TracXMLRPC	1.1.2

Python Traceback

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/Trac-1.0.5-py2.7.egg/trac/web/main.py", line 513, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.7/site-packages/Trac-1.0.5-py2.7.egg/trac/web/main.py", line 222, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/lib/python2.7/site-packages/TracXMLRPC-1.1.2-py2.7.egg/tracrpc/web_ui.py", line 72, in process_request
    return self._dump_docs(req)
  File "/usr/lib/python2.7/site-packages/TracXMLRPC-1.1.2-py2.7.egg/tracrpc/web_ui.py", line 111, in _dump_docs
    str(e), out.getvalue()))
Exception: testmanager.listRootCatalogs: object of type 'type' has no len()
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/TracXMLRPC-1.1.2-py2.7.egg/tracrpc/web_ui.py", line 101, in _dump_docs
    (method.signature,
  File "/usr/lib/python2.7/site-packages/TracXMLRPC-1.1.2-py2.7.egg/tracrpc/api.py", line 230, in _get_signature
    if len(sig) < len(sigcand):
TypeError: object of type 'type' has no len()

[anonymous]

Hide API link

[metanav]
rpc = disabled

[michal.somol@…]

Hello guys,

I encountered exactly the same problem (only newer config) and below mentioned hint didn't help, is there another possibility? I am below posting our config + error, as this issue is not closed I am replying here.

System Information

Trac	1.0.12
Babel	2.3.4
dnspython	1.14.0
Genshi	0.7 (without speedups)
mod_wsgi	3.4 (WSGIProcessGroup WSGIApplicationGroup %{GLOBAL})
MySQL	server: "10.1.14-MariaDB", client: "5.5.50-MariaDB", thread-safe: 1
MySQLdb	1.2.3
Pillow	2.0.0
Pygments	1.4
Python	2.7.5 (default, Aug 18 2016, 15:58:25) [GCC 4.8.5 20150623 (Red Hat 4.8.5-4)]
pytz	2016.6.1
RPC	1.1.5
setuptools	0.9.8
Subversion	1.7.14 (r1542130)
jQuery	#JQUERY#
jQuery UI	#JQUERYUI#
jQuery Timepicker	#JQUERYTP#

Enabled Plugins

SequenceDiagram	1.0
TestManager	1.9.0
TracAccountManager	0.4.4
TracGenericClass	1.1.6
TracGenericWorkflow	1.0.5
TracSpamFilter	1.0.9dev
TracSumFields	1.0.1
TracXMLRPC	1.1.5

Trac detected an internal error:

Exception: testmanager.listRootCatalogs: object of type 'type' has no len()
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/TracXMLRPC-1.1.5-py2.7.egg/tracrpc/web_ui.py", line 101, in _dump_docs
    (method.signature,
  File "/usr/lib/python2.7/site-packages/TracXMLRPC-1.1.5-py2.7.egg/tracrpc/api.py", line 230, in _get_signature
    if len(sig) < len(sigcand):
TypeError: object of type 'type' has no len()

[Jun Omae]

I guess TestManagerRPC.xmlrpc_methods() has this issue.

Please try to disable testmanager.rpcsupport.* like this if you don't use RPC support in testmanager:

[components]
testmanager.rpcsupport.* = disabled

Or try to apply the following patch to testmanager/rpcsupport.py:

testmanager/rpcsupport.py

@@ -47 +47 @@
             yield ('TEST_VIEW', ((list, str),), self.getTestCatalog)
             yield ('TEST_VIEW', ((list, str),(list, str, str)), self.getTestCase)
             yield ('TEST_VIEW', ((list, str, str),), self.getTestPlan)
-            yield ('TEST_VIEW', ((list),), self.listRootCatalogs)
+            yield ('TEST_VIEW', ((list,),), self.listRootCatalogs)
             yield ('TEST_VIEW', ((list, str),), self.listSubCatalogs)
             yield ('TEST_VIEW', ((list, str),), self.listTestPlans)

[anonymous]

Hello jun66j5, thanks for the very quick reply, I will try it next week.

[michal.somol@…]

Hello jun66j5,

the fix you proposed works as miracle, thank you so much! Ticket can be closed, I didn't figure out how I could do this. M.

[Roberto Longobardi]

Thanks a lot for the patch.

Included in release 1.9.1 now available from SourceForge.

​https://sourceforge.net/projects/testman4trac/files