tests/test-parseindex2.py
author Chris Jerdonek <chris.jerdonek@gmail.com>
Mon, 02 Dec 2013 07:49:49 -0800
changeset 20166 7eda5bb9ec8f
parent 20159 96b2dd77c85d
child 20742 3681de20b0a7
permissions -rw-r--r--
parsers: clarify documentation of test-parseindex2.py This change updates and improves the description of test-parseindex2.py. In particular, it removes language that can be interpreted to mean that the test module checks only the C implementation of parsers.parse_index2(). Rather, the module checks parsers.parse_index2(), which can be either the C or pure Python implementation, depending on which version is being used. As of e57c532c3835, the module also does more than just compare the return value with the original Python implementation.
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"""This unit test tests parsers.parse_index2()."""
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from mercurial import parsers
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from mercurial.node import nullid, nullrev
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import struct
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# original python implementation
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def gettype(q):
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    return int(q & 0xFFFF)
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def offset_type(offset, type):
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    return long(long(offset) << 16 | type)
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indexformatng = ">Qiiiiii20s12x"
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def py_parseindex(data, inline) :
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    s = 64
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    cache = None
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    index = []
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    nodemap =  {nullid: nullrev}
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    n = off = 0
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    l = len(data) - s
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    append = index.append
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    if inline:
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        cache = (0, data)
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        while off <= l:
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            e = struct.unpack(indexformatng, data[off:off + s])
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            nodemap[e[7]] = n
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            append(e)
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            n += 1
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            if e[1] < 0:
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                break
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            off += e[1] + s
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    else:
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        while off <= l:
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            e = struct.unpack(indexformatng, data[off:off + s])
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            nodemap[e[7]] = n
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            append(e)
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            n += 1
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            off += s
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    e = list(index[0])
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    type = gettype(e[0])
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    e[0] = offset_type(0, type)
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    index[0] = tuple(e)
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    # add the magic null revision at -1
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    index.append((0, 0, 0, -1, -1, -1, -1, nullid))
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    return index, cache
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data_inlined = '\x00\x01\x00\x01\x00\x00\x00\x00\x00\x00\x01\x8c' \
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    '\x00\x00\x04\x07\x00\x00\x00\x00\x00\x00\x15\x15\xff\xff\xff' \
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    '\xff\xff\xff\xff\xff\xebG\x97\xb7\x1fB\x04\xcf\x13V\x81\tw\x1b' \
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    'w\xdduR\xda\xc6\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' \
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    'x\x9c\x9d\x93?O\xc30\x10\xc5\xf7|\x8a\xdb\x9a\xa8m\x06\xd8*\x95' \
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    '\x81B\xa1\xa2\xa2R\xcb\x86Pd\x9a\x0b5$vd_\x04\xfd\xf6\x9c\xff@' \
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    '\x11!\x0b\xd9\xec\xf7\xbbw\xe7gG6\xad6\x04\xdaN\xc0\x92\xa0$)' \
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    '\xb1\x82\xa2\xd1%\x16\xa4\x8b7\xa9\xca\xd4-\xb2Y\x02\xfc\xc9' \
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    '\xcaS\xf9\xaeX\xed\xb6\xd77Q\x02\x83\xd4\x19\xf5--Y\xea\xe1W' \
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    '\xab\xed\x10\xceR\x0f_\xdf\xdf\r\xe1,\xf5\xf0\xcb\xf5 \xceR\x0f' \
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    '_\xdc\x0e\x0e\xc3R\x0f_\xae\x96\x9b!\x9e\xa5\x1e\xbf\xdb,\x06' \
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    '\xc7q\x9a/\x88\x82\xc3B\xea\xb5\xb4TJ\x93\xb6\x82\x0e\xe16\xe6' \
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    'KQ\xdb\xaf\xecG\xa3\xd1 \x01\xd3\x0b_^\xe8\xaa\xa0\xae\xad\xd1' \
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    '&\xbef\x1bz\x08\xb0|\xc9Xz\x06\xf6Z\x91\x90J\xaa\x17\x90\xaa' \
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    '\xd2\xa6\x11$5C\xcf\xba#\xa0\x03\x02*2\x92-\xfc\xb1\x94\xdf\xe2' \
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    '\xae\xb8\'m\x8ey0^\x85\xd3\x82\xb4\xf0`:\x9c\x00\x8a\xfd\x01' \
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    '\xb0\xc6\x86\x8b\xdd\xae\x80\xf3\xa9\x9fd\x16\n\x00R%\x1a\x06' \
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    '\xe9\xd8b\x98\x1d\xf4\xf3+\x9bf\x01\xd8p\x1b\xf3.\xed\x9f^g\xc3' \
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    '^\xd9W81T\xdb\xd5\x04sx|\xf2\xeb\xd6`%?x\xed"\x831\xbf\xf3\xdc' \
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    'b\xeb%gaY\xe1\xad\x9f\xb9f\'1w\xa9\xa5a\x83s\x82J\xb98\xbc4\x8b' \
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    '\x83\x00\x9f$z\xb8#\xa5\xb1\xdf\x98\xd9\xec\x1b\x89O\xe3Ts\x9a4' \
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    '\x17m\x8b\xfc\x8f\xa5\x95\x9a\xfc\xfa\xed,\xe5|\xa1\xfe\x15\xb9' \
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    '\xbc\xb2\x93\x1f\xf2\x95\xff\xdf,\x1a\xc5\xe7\x17*\x93Oz:>\x0e'
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data_non_inlined = '\x00\x00\x00\x01\x00\x00\x00\x00\x00\x01D\x19' \
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    '\x00\x07e\x12\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff' \
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    '\xff\xff\xff\xff\xd1\xf4\xbb\xb0\xbe\xfc\x13\xbd\x8c\xd3\x9d' \
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    '\x0f\xcd\xd9;\x8c\x07\x8cJ/\x00\x00\x00\x00\x00\x00\x00\x00\x00' \
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    '\x00\x00\x00\x00\x00\x00\x01D\x19\x00\x00\x00\x00\x00\xdf\x00' \
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    '\x00\x01q\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x00\xff' \
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    '\xff\xff\xff\xc1\x12\xb9\x04\x96\xa4Z1t\x91\xdfsJ\x90\xf0\x9bh' \
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    '\x07l&\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' \
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    '\x00\x01D\xf8\x00\x00\x00\x00\x01\x1b\x00\x00\x01\xb8\x00\x00' \
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    '\x00\x01\x00\x00\x00\x02\x00\x00\x00\x01\xff\xff\xff\xff\x02\n' \
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    '\x0e\xc6&\xa1\x92\xae6\x0b\x02i\xfe-\xe5\xbao\x05\xd1\xe7\x00' \
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    '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01F' \
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    '\x13\x00\x00\x00\x00\x01\xec\x00\x00\x03\x06\x00\x00\x00\x01' \
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    '\x00\x00\x00\x03\x00\x00\x00\x02\xff\xff\xff\xff\x12\xcb\xeby1' \
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    '\xb6\r\x98B\xcb\x07\xbd`\x8f\x92\xd9\xc4\x84\xbdK\x00\x00\x00' \
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    '\x00\x00\x00\x00\x00\x00\x00\x00\x00'
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def parse_index2(data, inline):
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    index, chunkcache = parsers.parse_index2(data, inline)
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    return list(index), chunkcache
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def runtest() :
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    # Check that parse_index2() raises TypeError on bad arguments.
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    try:
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        parse_index2(0, True)
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    except TypeError:
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        pass
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    else:
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        print "Expected to get TypeError."
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   # Check parsers.parse_index2() on an index file against the original
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   # Python implementation of parseindex, both with and without inlined data.
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    py_res_1 = py_parseindex(data_inlined, True)
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    c_res_1 = parse_index2(data_inlined, True)
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    py_res_2 = py_parseindex(data_non_inlined, False)
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    c_res_2 = parse_index2(data_non_inlined, False)
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    if py_res_1 != c_res_1:
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        print "Parse index result (with inlined data) differs!"
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    if py_res_2 != c_res_2:
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        print "Parse index result (no inlined data) differs!"
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Bryan O'Sullivan <bryano@fb.com>
parents: 16363
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    ix = parsers.parse_index2(data_inlined, True)[0]
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    for i, r in enumerate(ix):
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        if r[7] == nullid:
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            i = -1
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        try:
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            if ix[r[7]] != i:
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                print 'Reverse lookup inconsistent for %r' % r[7].encode('hex')
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        except TypeError:
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            # pure version doesn't support this
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            break
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    print "done"
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runtest()