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0646177997
Some ports (eg stm32) configure the FAT driver differently (eg with multi-partition support) and that leads to a slightly different sequence of block reads, compared to other configurations (eg rp2). Comment out the printing in `readblocks()` so the tests are deterministic (the printing is still useful for debugging). Signed-off-by: Damien George <damien@micropython.org>
90 lines
2.2 KiB
Python
90 lines
2.2 KiB
Python
# Tests where the block device returns invalid values
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try:
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import vfs
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vfs.VfsFat
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vfs.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 = 512
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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.read_res = 0
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self.write_res = 0
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def readblocks(self, block, buf, off=0):
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# print("readblocks", block, len(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.read_res
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def writeblocks(self, block, buf, off=None):
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if off is None:
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# erase, then write
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off = 0
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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.write_res
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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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try:
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bdev = RAMBlockDevice(50)
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except MemoryError:
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print("SKIP")
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raise SystemExit
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def test(vfs_class):
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print(vfs_class)
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bdev.read_res = 0 # reset function results
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bdev.write_res = 0
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vfs_class.mkfs(bdev)
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fs = vfs_class(bdev)
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with fs.open("test", "w") as f:
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f.write("a" * 64)
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for res in (0, -5, 5, 33, "invalid"):
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# -5 is a legitimate negative failure (EIO), positive integer
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# is not
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# This variant will fail on open
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bdev.read_res = res
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try:
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with fs.open("test", "r") as f:
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print("opened")
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except OSError as e:
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print("OSError", e)
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# This variant should succeed on open, may fail on read
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# unless the filesystem cached the contents already
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bdev.read_res = 0
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try:
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with fs.open("test", "r") as f:
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bdev.read_res = res
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print("read 1", f.read(1))
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print("read rest", f.read())
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except OSError as e:
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print("OSError", e)
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test(vfs.VfsLfs2)
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test(vfs.VfsFat)
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