76 lines
2.0 KiB
Python
76 lines
2.0 KiB
Python
# Test ilistdir __del__ for VfsLittle using a RAM device.
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import gc
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try:
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import os
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os.VfsLfs2
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except (ImportError, AttributeError):
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print("SKIP")
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raise SystemExit
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class RAMBlockDevice:
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ERASE_BLOCK_SIZE = 1024
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def __init__(self, blocks):
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self.data = bytearray(blocks * self.ERASE_BLOCK_SIZE)
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def readblocks(self, block, buf, off):
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addr = block * self.ERASE_BLOCK_SIZE + off
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for i in range(len(buf)):
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buf[i] = self.data[addr + i]
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def writeblocks(self, block, buf, off):
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addr = block * self.ERASE_BLOCK_SIZE + off
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for i in range(len(buf)):
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self.data[addr + i] = buf[i]
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def ioctl(self, op, arg):
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if op == 4: # block count
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return len(self.data) // self.ERASE_BLOCK_SIZE
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if op == 5: # block size
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return self.ERASE_BLOCK_SIZE
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if op == 6: # erase block
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return 0
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def test(bdev, vfs_class):
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vfs_class.mkfs(bdev)
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vfs = vfs_class(bdev)
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vfs.mkdir("/test_d1")
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vfs.mkdir("/test_d2")
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vfs.mkdir("/test_d3")
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for i in range(10):
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print(i)
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# We want to partially iterate the ilistdir iterator to leave it in an
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# open state, which will then test the finaliser when it's garbage collected.
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idir = vfs.ilistdir("/")
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print(any(idir))
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# Alternate way of partially iterating the ilistdir object, modifying the
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# filesystem while it's open.
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for dname, *_ in vfs.ilistdir("/"):
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vfs.rmdir(dname)
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break
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vfs.mkdir(dname)
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# Also create a fully drained iterator and ensure trying to re-use it
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# throws the correct exception.
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idir_emptied = vfs.ilistdir("/")
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l = list(idir_emptied)
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print(len(l))
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try:
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next(idir_emptied)
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except StopIteration:
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pass
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gc.collect()
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vfs.open("/test", "w").close()
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bdev = RAMBlockDevice(30)
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test(bdev, os.VfsLfs2)
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