8000 tests/uzlib_decompio_gz: Test for DecompIO with gzip bitstream. · sparkfun/circuitpython@d46de80 · GitHub
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tests/uzlib_decompio_gz: Test for DecompIO with gzip bitstream.
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‎tests/extmod/uzlib_decompio_gz.py‎

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try:
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import zlib
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except ImportError:
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import uzlib as zlib
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import uio as io
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# gzip bitstream
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buf = io.BytesIO(b'\x1f\x8b\x08\x08\x99\x0c\xe5W\x00\x03hello\x00\xcbH\xcd\xc9\xc9\x07\x00\x86\xa6\x106\x05\x00\x00\x00')
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inp = zlib.DecompIO(buf, 16 + 8)
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print(buf.seek(0, 1))
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print(inp.read(1))
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print(buf.seek(0, 1))
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print(inp.read(2))
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print(inp.read())
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print(buf.seek(0, 1))
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print(inp.read(1))
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print(inp.read())
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print(buf.seek(0, 1))
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# broken header
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buf = io.BytesIO(b'\x1f\x8c\x08\x08\x99\x0c\xe5W\x00\x03hello\x00\xcbH\xcd\xc9\xc9\x07\x00\x86\xa6\x106\x05\x00\x00\x00')
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try:
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inp = zlib.DecompIO(buf, 16 + 8)
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except ValueError:
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print("ValueError")
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# broken crc32
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buf = io.BytesIO(b'\x1f\x8b\x08\x08\x99\x0c\xe5W\x00\x03hello\x00\xcbH\xcd\xc9\xc9\x07\x00\x86\xa7\x106\x05\x00\x00\x00')
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inp = zlib.DecompIO(buf, 16 + 8)
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try:
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inp.read(6)
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except OSError as e:
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print(repr(e))
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# broken uncompressed size - not checked so far
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#buf = io.BytesIO(b'\x1f\x8b\x08\x08\x99\x0c\xe5W\x00\x03hello\x00\xcbH\xcd\xc9\xc9\x07\x00\x86\xa6\x106\x06\x00\x00\x00')
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#inp = zlib.DecompIO(buf, 16 + 8)
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#inp.read(6)

‎tests/extmod/uzlib_decompio_gz.py.exp‎

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16
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b'h'
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18
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b'el'
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b'lo'
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b''
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b''
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31
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ValueError
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OSError(22,)

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