annotate tests/hghave @ 6805:482581431dcd

Sort removes first when applying updates (fixes issues 750 and 912)

This change ensures that removes happen first in applyupdates(). This avoids
issues where we try to make a case-only rename of a file on a case insensitive
system. Without this patch, the add of the new name happens before the remove
of the old one - which results in the file not existing, as the two names are
effectively the same.

With the patch, the old name gets removed then the new one gets added, which
is always safe.

#!/usr/bin/env python
"""Test the running system for features availability. Exit with zero
if all features are there, non-zero otherwise. If a feature name is
prefixed with "no-", the absence of feature is tested.
"""
import optparse
import os
import re
import sys
import tempfile

tempprefix = 'hg-hghave-'

def matchoutput(cmd, regexp, ignorestatus=False):
    """Return True if cmd executes successfully and its output
    is matched by the supplied regular expression.
    """
    r = re.compile(regexp)
    fh = os.popen(cmd)
    s = fh.read()
    ret = fh.close()
    return (ignorestatus or ret is None) and r.search(s)

def has_baz():
    return matchoutput('baz --version 2>&1', r'baz Bazaar version')

def has_cvs():
    re = r'Concurrent Versions System.*?server'
    return matchoutput('cvs --version 2>&1', re)

def has_cvsps():
    return matchoutput('cvsps -h -q 2>&1', r'cvsps version', True)

def has_darcs():
    return matchoutput('darcs', r'darcs version', True)

def has_mtn():
    return matchoutput('mtn --version', r'monotone', True) and not matchoutput(
        'mtn --version', r'monotone 0\.(\d|[12]\d|3[01])[^\d]', True)

def has_eol_in_paths():
    try:
        fd, path = tempfile.mkstemp(prefix=tempprefix, suffix='\n\r')
        os.close(fd)
        os.remove(path)
        return True
    except:
        return False

def has_executablebit():
    fd, path = tempfile.mkstemp(prefix=tempprefix)
    os.close(fd)
    try:
        s = os.lstat(path).st_mode
        os.chmod(path, s | 0100)
        return (os.lstat(path).st_mode & 0100 != 0)
    finally:
        os.remove(path)

def has_fifo():
    return hasattr(os, "mkfifo")

def has_hotshot():
    try:
        # hotshot.stats tests hotshot and many problematic dependencies
        # like profile.
        import hotshot.stats
        return True
    except ImportError:
        return False

def has_lsprof():
    try:
        import _lsprof
        return True
    except ImportError:
        return False

def has_git():
    return matchoutput('git --version 2>&1', r'^git version')

def has_svn():
    return matchoutput('svn --version 2>&1', r'^svn, version') and \
        matchoutput('svnadmin --version 2>&1', r'^svnadmin, version')

def has_svn_bindings():
    try:
        import svn.core
        return True
    except ImportError:
        return False

def has_symlink():
    return hasattr(os, "symlink")

def has_tla():
    return matchoutput('tla --version 2>&1', r'The GNU Arch Revision')

def has_unix_permissions():
    d = tempfile.mkdtemp(prefix=tempprefix, dir=".")
    try:
        fname = os.path.join(d, 'foo')
        for umask in (077, 007, 022):
            os.umask(umask)
            f = open(fname, 'w')
            f.close()
            mode = os.stat(fname).st_mode
            os.unlink(fname)
            if mode & 0777 != ~umask & 0666:
                return False
        return True
    finally:
        os.rmdir(d)

def has_pygments():
    try:
        import pygments
        return True
    except ImportError:
        return False

checks = {
    "baz": (has_baz, "GNU Arch baz client"),
    "cvs": (has_cvs, "cvs client/server"),
    "cvsps": (has_cvsps, "cvsps utility"),
    "darcs": (has_darcs, "darcs client"),
    "eol-in-paths": (has_eol_in_paths, "end-of-lines in paths"),
    "execbit": (has_executablebit, "executable bit"),
    "fifo": (has_fifo, "named pipes"),
    "git": (has_git, "git command line client"),
    "hotshot": (has_hotshot, "python hotshot module"),
    "lsprof": (has_lsprof, "python lsprof module"),
    "mtn": (has_mtn, "monotone client (> 0.31)"),
    "svn": (has_svn, "subversion client and admin tools"),
    "svn-bindings": (has_svn_bindings, "subversion python bindings"),
    "symlink": (has_symlink, "symbolic links"),
    "tla": (has_tla, "GNU Arch tla client"),
    "unix-permissions": (has_unix_permissions, "unix-style permissions"),
    "pygments": (has_pygments, "Pygments source highlighting library"),
}

def list_features():
    for name, feature in checks.iteritems():
        desc = feature[1]
        print name + ':', desc

parser = optparse.OptionParser("%prog [options] [features]")
parser.add_option("--list-features", action="store_true",
                  help="list available features")
parser.add_option("-q", "--quiet", action="store_true",
                  help="check features silently")

if __name__ == '__main__':
    options, args = parser.parse_args()
    if options.list_features:
        list_features()
        sys.exit(0)

    quiet = options.quiet

    failures = 0

    def error(msg):
        global failures
        if not quiet:
            sys.stderr.write(msg + '\n')
        failures += 1

    for feature in args:
        negate = feature.startswith('no-')
        if negate:
            feature = feature[3:]

        if feature not in checks:
            error('skipped: unknown feature: ' + feature)
            continue

        check, desc = checks[feature]
        if not negate and not check():
            error('skipped: missing feature: ' + desc)
        elif negate and check():
            error('skipped: system supports %s' % desc)

    if failures != 0:
        sys.exit(1)