scons: Reading SConscript files ...
scons version: 2.3.0
python version: 2 7 2 'final' 0
AttributeError: 'module' object has no attribute 'TestCase':
  File "E:\MongoDB\Source\mongodb\SConstruct", line 608:
    env = Environment(variables=env_vars, **envDict)
  File "C:\Python27\scons-2.3.0\SCons\Environment.py", line 1002:
    apply_tools(self, tools, toolpath)
  File "C:\Python27\scons-2.3.0\SCons\Environment.py", line 106:
    env.Tool(tool)
  File "C:\Python27\scons-2.3.0\SCons\Environment.py", line 1785:
    tool = SCons.Tool.Tool(tool, toolpath, **kw)
  File "C:\Python27\scons-2.3.0\SCons\Tool\__init__.py", line 97:
    module = self._tool_module()
  File "C:\Python27\scons-2.3.0\SCons\Tool\__init__.py", line 112:
    return imp.load_module(self.name, file, path, desc)
  File "E:\MongoDB\Source\mongodb\site_scons\site_tools\mongo_unittest.py", line
 7:
    from buildscripts import smoke
  File "E:\MongoDB\Source\mongodb\buildscripts\smoke\__init__.py", line 4:
    import executor
  File "E:\MongoDB\Source\mongodb\buildscripts\smoke\executor.py", line 15:
    import testers
  File "E:\MongoDB\Source\mongodb\buildscripts\smoke\testers.py", line 18:
    class JSUnitTest(unittest.TestCase):