view tests/common-pattern.py @ 49275:c6a3243567b6

chg: replace mercurial.util.recvfds() by simpler pure Python implementation On Python 3, we have socket.socket.recvmsg(). This makes it possible to receive FDs in pure Python code. The new code behaves like the previous implementations, except that it’s more strict about the format of the ancillary data. This works because we know in which format the FDs are passed. Because the code is (and always has been) specific to chg (payload is 1 byte, number of passed FDs is limited) and we now have only one implementation and the code is very short, I decided to stop exposing a function in mercurial.util. Note on terminology: The SCM_RIGHTS mechanism is used to share open file descriptions to another process over a socket. The sending side passes an array of file descriptors and the receiving side receives an array of file descriptors. The file descriptors are different in general on both sides but refer to the same open file descriptions. The two terms are often conflated, even in the official documentation. That’s why I used “FD” above, which could mean both “file descriptor” and “file description”.
author Manuel Jacob <me@manueljacob.de>
date Thu, 02 Jun 2022 23:57:56 +0200
parents 6000f5b25c9b
children 45268599f55e
line wrap: on
line source

# common patterns in test at can safely be replaced

import os

substitutions = [
    # list of possible compressions
    (br'(zstd,)?zlib,none,bzip2', br'$USUAL_COMPRESSIONS$'),
    (br'=(zstd,)?zlib', br'=$BUNDLE2_COMPRESSIONS$'),
    # capabilities sent through http
    (
        br'bundlecaps=HG20%2Cbundle2%3DHG20%250A'
        br'bookmarks%250A'
        br'changegroup%253D01%252C02%250A'
        br'checkheads%253Drelated%250A'
        br'digests%253Dmd5%252Csha1%252Csha512%250A'
        br'error%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250A'
        br'hgtagsfnodes%250A'
        br'listkeys%250A'
        br'phases%253Dheads%250A'
        br'pushkey%250A'
        br'remote-changegroup%253Dhttp%252Chttps%250A'
        br'stream%253Dv2',
        # (the replacement patterns)
        br'$USUAL_BUNDLE_CAPS$',
    ),
    (
        br'bundlecaps=HG20%2Cbundle2%3DHG20%250A'
        br'bookmarks%250A'
        br'changegroup%253D01%252C02%250A'
        br'checkheads%3Drelated%0A'
        br'digests%253Dmd5%252Csha1%252Csha512%250A'
        br'error%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250A'
        br'hgtagsfnodes%250A'
        br'listkeys%250A'
        br'phases%253Dheads%250A'
        br'pushkey%250A'
        br'remote-changegroup%253Dhttp%252Chttps',
        # (the replacement patterns)
        br'$USUAL_BUNDLE_CAPS_SERVER$',
    ),
    # bundle2 capabilities sent through ssh
    (
        br'bundle2=HG20%0A'
        br'bookmarks%0A'
        br'changegroup%3D01%2C02%0A'
        br'checkheads%3Drelated%0A'
        br'digests%3Dmd5%2Csha1%2Csha512%0A'
        br'error%3Dabort%2Cunsupportedcontent%2Cpushraced%2Cpushkey%0A'
        br'hgtagsfnodes%0A'
        br'listkeys%0A'
        br'phases%3Dheads%0A'
        br'pushkey%0A'
        br'remote-changegroup%3Dhttp%2Chttps%0A'
        br'stream%3Dv2',
        # (replacement patterns)
        br'$USUAL_BUNDLE2_CAPS$',
    ),
    # bundle2 capabilities advertised by the server
    (
        br'bundle2=HG20%0A'
        br'bookmarks%0A'
        br'changegroup%3D01%2C02%0A'
        br'checkheads%3Drelated%0A'
        br'digests%3Dmd5%2Csha1%2Csha512%0A'
        br'error%3Dabort%2Cunsupportedcontent%2Cpushraced%2Cpushkey%0A'
        br'hgtagsfnodes%0A'
        br'listkeys%0A'
        br'phases%3Dheads%0A'
        br'pushkey%0A'
        br'remote-changegroup%3Dhttp%2Chttps',
        # (replacement patterns)
        br'$USUAL_BUNDLE2_CAPS_SERVER$',
    ),
    (
        br'bundle2=HG20%0A'
        br'bookmarks%0A'
        br'changegroup%3D01%2C02%0A'
        br'digests%3Dmd5%2Csha1%2Csha512%0A'
        br'error%3Dabort%2Cunsupportedcontent%2Cpushraced%2Cpushkey%0A'
        br'hgtagsfnodes%0A'
        br'listkeys%0A'
        br'pushkey%0A'
        br'remote-changegroup%3Dhttp%2Chttps%0A'
        br'stream%3Dv2',
        # (replacement patterns)
        br'$USUAL_BUNDLE2_CAPS_NO_PHASES$',
    ),
    # HTTP access log dates
    (
        br' - - \[\d\d/.../2\d\d\d \d\d:\d\d:\d\d] "(GET|PUT|POST)',
        lambda m: br' - - [$LOGDATE$] "' + m.group(1),
    ),
    # HTTP error log dates
    (
        br' - - \[\d\d/.../2\d\d\d \d\d:\d\d:\d\d] (HG error:|Exception)',
        lambda m: br' - - [$ERRDATE$] ' + m.group(1),
    ),
    # HTTP header dates- RFC 1123
    (
        br'([Dd]ate): [A-Za-z]{3}, \d\d [A-Za-z]{3} \d{4} \d\d:\d\d:\d\d GMT',
        lambda m: br'%s: $HTTP_DATE$' % m.group(1),
    ),
    # LFS expiration value
    (
        br'"expires_at": "\d{4}-\d\d-\d\dT\d\d:\d\d:\d\dZ"',
        br'"expires_at": "$ISO_8601_DATE_TIME$"',
    ),
    # Windows has an extra '/' in the following lines that get globbed away:
    #   pushing to file:/*/$TESTTMP/r2 (glob)
    #   comparing with file:/*/$TESTTMP/r2 (glob)
    #   sub/maybelarge.dat: largefile 34..9c not available from
    #       file:/*/$TESTTMP/largefiles-repo (glob)
    (
        br'(.*file:/)/?(/\$TESTTMP.*)',
        lambda m: m.group(1) + b'*' + m.group(2) + b' (glob)',
    ),
    # `hg clone --stream` output
    (
        br'transferred (\S+?) KB in \S+? seconds \(.+?/sec\)(?: \(glob\))?(.*)',
        lambda m: (
            br'transferred %s KB in * seconds (* */sec) (glob)%s'
            % (m.group(1), m.group(2))
        ),
    ),
]

# Various platform error strings, keyed on a common replacement string
_errors = {
    br'$ENOENT$': (
        # IOError in Python does not have the same error message
        # than in Rust, and automatic conversion is not possible
        # because of module member privacy.
        br'No such file or directory \(os error 2\)',
        # strerror()
        br'No such file or directory',
        # FormatMessage(ERROR_FILE_NOT_FOUND)
        br'The system cannot find the file specified',
    ),
    br'$ENOTDIR$': (
        # strerror()
        br'Not a directory',
        # FormatMessage(ERROR_PATH_NOT_FOUND)
        br'The system cannot find the path specified',
    ),
    br'$ECONNRESET$': (
        # strerror()
        br'Connection reset by peer',
        # FormatMessage(WSAECONNRESET)
        br'An existing connection was forcibly closed by the remote host',
    ),
    br'$EADDRINUSE$': (
        # strerror()
        br'Address already in use',
        # FormatMessage(WSAEADDRINUSE)
        br'Only one usage of each socket address'
        br' \(protocol/network address/port\) is normally permitted',
    ),
    br'$EADDRNOTAVAIL$': (
        # strerror()
        br'Cannot assign requested address',
        # FormatMessage(WSAEADDRNOTAVAIL)
    ),
}

for replace, msgs in _errors.items():
    substitutions.extend((m, replace) for m in msgs)

# Output lines on Windows that can be autocorrected for '\' vs '/' path
# differences.
_winpathfixes = [
    # cloning subrepo s\ss from $TESTTMP/t/s/ss
    # cloning subrepo foo\bar from http://localhost:$HGPORT/foo/bar
    br'(?m)^cloning subrepo \S+\\.*',
    # pulling from $TESTTMP\issue1852a
    br'(?m)^pulling from \$TESTTMP\\.*',
    # pushing to $TESTTMP\a
    br'(?m)^pushing to \$TESTTMP\\.*',
    # pushing subrepo s\ss to $TESTTMP/t/s/ss
    br'(?m)^pushing subrepo \S+\\\S+ to.*',
    # moving d1\d11\a1 to d3/d11/a1
    br'(?m)^moving \S+\\.*',
    # d1\a: not recording move - dummy does not exist
    br'\S+\\\S+: not recording move .+',
    # reverting s\a
    br'(?m)^reverting (?!subrepo ).*\\.*',
    # saved backup bundle to
    #     $TESTTMP\test\.hg\strip-backup/443431ffac4f-2fc5398a-backup.hg
    br'(?m)^saved backup bundle to \$TESTTMP.*\.hg',
    # no changes made to subrepo s\ss since last push to ../tcc/s/ss
    br'(?m)^no changes made to subrepo \S+\\\S+ since.*',
    # changeset 5:9cc5aa7204f0: stuff/maybelarge.dat references missing
    #     $TESTTMP\largefiles-repo-hg\.hg\largefiles\76..38
    br'(?m)^changeset .* references (corrupted|missing) \$TESTTMP\\.*',
    # stuff/maybelarge.dat: largefile 76..38 not available from
    #     file:/*/$TESTTMP\largefiles-repo (glob)
    br'.*: largefile \S+ not available from file:/\*/.+',
]

if os.name == 'nt':
    substitutions.extend(
        [
            (s, lambda match: match.group().replace(b'\\', b'/'))
            for s in _winpathfixes
        ]
    )