def test_region_list(self):
fc = FileCreator(100, "sample_file")
fd = os.open(fc.path, os.O_RDONLY)
for item in (fc.path, fd):
ml = MapRegionList(item)
assert ml.client_count() == 1
assert len(ml) == 0
assert ml.path_or_fd() == item
assert ml.file_size() == fc.size
#END handle input
os.close(fd)
