Debugging windows agent memory leak

gistfile1.py

import unittest
import logging

logging.basicConfig(level=logging.DEBUG)
log = logging.getLogger(__file__)

import checks.system.win32 as w32

WIN32_CHECKS = [
    w32.Disk(log),
    w32.IO(log),
    w32.Processes(log),
    w32.Memory(log),
    w32.Network(log),
    w32.Cpu(log)
]

AGENT_CONFIG = {}

class TestWin32(unittest.TestCase):
    def testMemory(self):
        import gc
        gc.set_debug(gc.DEBUG_LEAK)
        try:
            start = len(gc.garbage)
            for check_klass in WIN32_CHECKS:
                metrics = check_klass.check(AGENT_CONFIG)
            end = len(gc.garbage)
            self.assertEquals(end - start, 0, gc.garbage)
        finally:
            gc.set_debug(0)

if __name__ == "__main__":
    unittest.main()