setUpClass not working with UnitTests window

[Sadanand Upase]

I am using unittest2 as testing suite.I have a test class which has setUpClass(classmethod). When I run the module directly the test case passes. When I try to run the same test by loading it into Unit Tests window it fails. I figured out that the setUpClass method is not getting called. Is the setUpClass not supported in Unit Tests window? Please help me in getting it running.