def METHOD_NAME(self):
    linecache.clearcache()
    lines = linecache.getlines(NONEXISTENT_FILENAME, globals())
    linecache.clearcache()
    linecache.getlines(NONEXISTENT_FILENAME)
    linecache.lazycache(NONEXISTENT_FILENAME, globals())
    self.assertEqual(lines, linecache.updatecache(NONEXISTENT_FILENAME))