113 lines
2.5 KiB
Python
113 lines
2.5 KiB
Python
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# Test for VfsLittle using a RAM device, testing error handling from corrupt block device
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try:
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import uos
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uos.VfsLfs1
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uos.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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self.ret = 0
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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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return self.ret
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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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return self.ret
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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 corrupt(bdev, block):
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addr = block * bdev.ERASE_BLOCK_SIZE
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for i in range(bdev.ERASE_BLOCK_SIZE):
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bdev.data[addr + i] = i & 0xFF
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def create_vfs(bdev, vfs_class):
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bdev.ret = 0
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vfs_class.mkfs(bdev)
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vfs = vfs_class(bdev)
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with vfs.open("f", "w") as f:
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for i in range(100):
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f.write("test")
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return vfs
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def test(bdev, vfs_class):
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print("test", vfs_class)
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# statvfs
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vfs = create_vfs(bdev, vfs_class)
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corrupt(bdev, 0)
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corrupt(bdev, 1)
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try:
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print(vfs.statvfs(""))
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except OSError:
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print("statvfs OSError")
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# error during read
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vfs = create_vfs(bdev, vfs_class)
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f = vfs.open("f", "r")
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bdev.ret = -5 # EIO
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try:
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f.read(10)
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except OSError:
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print("read OSError")
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# error during write
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vfs = create_vfs(bdev, vfs_class)
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f = vfs.open("f", "a")
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bdev.ret = -5 # EIO
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try:
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f.write("test")
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except OSError:
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print("write OSError")
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# error during close
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vfs = create_vfs(bdev, vfs_class)
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f = vfs.open("f", "w")
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f.write("test")
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bdev.ret = -5 # EIO
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try:
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f.close()
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except OSError:
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print("close OSError")
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# error during flush
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vfs = create_vfs(bdev, vfs_class)
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f = vfs.open("f", "w")
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f.write("test")
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bdev.ret = -5 # EIO
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try:
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f.flush()
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except OSError:
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print("flush OSError")
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bdev.ret = 0
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f.close()
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bdev = RAMBlockDevice(30)
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test(bdev, uos.VfsLfs1)
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test(bdev, uos.VfsLfs2)
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