tests/hghave.py
author Patrick Mezard <patrick@mezard.eu>
Sun, 09 Sep 2012 12:31:14 +0200
branchstable
changeset 1133 82f74372516e
parent 1105 9b2932ca75fd
child 1136 294cea906d3a
permissions -rwxr-xr-x
test-http-branchmap: enable on Windows Tests using "hg serve --daemon" are currently disabled on Windows for lack of proper kill utility. The one shipped with MinGW operates on internal process identifiers and not on the ones recorded by hg serve. Fortunately we can replace most of them by calls to killdaemons.py. This patch is a proof of concept on how to run these tests on Windows. The plan is: - Check test-http-branchmap.t does not fail/hang on the buildbot - Convert all kill utility calls to killdaemons.py calls. - Add a rule in check-code.py to forbid kill calls, or ignore the remaining ones (test-hup.t, etc.). - Possibly drop the 'serve' rule from hghave. The: listening at http://*:$HGPORT1/ line does not appear on Windows because the detached process can no longer write on its parent streams. Grepping hg serve stdout directly causes the parent process to never return and hangs the test. This is a bug, but I have no simple solution and prefer to pay this small price and enable hg serve tests on Windows. [ orginal upstream message ]
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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import os, stat, socket
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import re
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import sys
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import tempfile
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tempprefix = 'hg-hghave-'
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def matchoutput(cmd, regexp, ignorestatus=False):
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    """Return True if cmd executes successfully and its output
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    is matched by the supplied regular expression.
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    """
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    r = re.compile(regexp)
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    fh = os.popen(cmd)
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    s = fh.read()
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    try:
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        ret = fh.close()
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    except IOError:
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        # Happen in Windows test environment
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        ret = 1
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    return (ignorestatus or ret is None) and r.search(s)
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def has_baz():
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    return matchoutput('baz --version 2>&1', r'baz Bazaar version')
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def has_bzr():
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    try:
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        import bzrlib
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        return bzrlib.__doc__ is not None
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    except ImportError:
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        return False
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def has_bzr114():
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    try:
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        import bzrlib
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        return (bzrlib.__doc__ is not None
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                and bzrlib.version_info[:2] >= (1, 14))
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    except ImportError:
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        return False
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def has_cvs():
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    re = r'Concurrent Versions System.*?server'
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    return matchoutput('cvs --version 2>&1', re) and not has_msys()
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def has_darcs():
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    return matchoutput('darcs --version', r'2\.[2-9]', True)
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def has_mtn():
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    return matchoutput('mtn --version', r'monotone', True) and not matchoutput(
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        'mtn --version', r'monotone 0\.', True)
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def has_eol_in_paths():
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    try:
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        fd, path = tempfile.mkstemp(dir='.', prefix=tempprefix, suffix='\n\r')
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        os.close(fd)
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        os.remove(path)
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        return True
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    except (IOError, OSError):
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        return False
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def has_executablebit():
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    try:
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        EXECFLAGS = stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH
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        fh, fn = tempfile.mkstemp(dir='.', prefix=tempprefix)
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        try:
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            os.close(fh)
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            m = os.stat(fn).st_mode & 0777
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            new_file_has_exec = m & EXECFLAGS
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            os.chmod(fn, m ^ EXECFLAGS)
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            exec_flags_cannot_flip = ((os.stat(fn).st_mode & 0777) == m)
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        finally:
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            os.unlink(fn)
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    except (IOError, OSError):
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        # we don't care, the user probably won't be able to commit anyway
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        return False
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    return not (new_file_has_exec or exec_flags_cannot_flip)
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def has_icasefs():
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    # Stolen from mercurial.util
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    fd, path = tempfile.mkstemp(dir='.', prefix=tempprefix)
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    os.close(fd)
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    try:
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        s1 = os.stat(path)
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        d, b = os.path.split(path)
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        p2 = os.path.join(d, b.upper())
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        if path == p2:
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            p2 = os.path.join(d, b.lower())
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        try:
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            s2 = os.stat(p2)
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            return s2 == s1
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        except OSError:
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            return False
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    finally:
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        os.remove(path)
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def has_inotify():
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    try:
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        import hgext.inotify.linux.watcher
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    except ImportError:
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        return False
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    name = tempfile.mktemp(dir='.', prefix=tempprefix)
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    sock = socket.socket(socket.AF_UNIX)
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    try:
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        sock.bind(name)
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    except socket.error, err:
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        return False
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    sock.close()
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    os.unlink(name)
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    return True
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def has_fifo():
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    if getattr(os, "mkfifo", None) is None:
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        return False
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    name = tempfile.mktemp(dir='.', prefix=tempprefix)
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    try:
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        os.mkfifo(name)
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        os.unlink(name)
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        return True
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    except OSError:
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        return False
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def has_killdaemons():
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    return True
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def has_cacheable_fs():
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    from mercurial import util
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parents:
diff changeset
   126
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parents: 1098
diff changeset
   127
    fd, path = tempfile.mkstemp(dir='.', prefix=tempprefix)
1007
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parents:
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   128
    os.close(fd)
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parents:
diff changeset
   129
    try:
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   130
        return util.cachestat(path).cacheable()
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parents:
diff changeset
   131
    finally:
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   132
        os.remove(path)
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parents:
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   133
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diff changeset
   134
def has_lsprof():
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   135
    try:
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parents:
diff changeset
   136
        import _lsprof
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   137
        return True
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parents:
diff changeset
   138
    except ImportError:
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parents:
diff changeset
   139
        return False
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parents:
diff changeset
   140
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parents:
diff changeset
   141
def has_gettext():
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parents:
diff changeset
   142
    return matchoutput('msgfmt --version', 'GNU gettext-tools')
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parents:
diff changeset
   143
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parents:
diff changeset
   144
def has_git():
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parents:
diff changeset
   145
    return matchoutput('git --version 2>&1', r'^git version')
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parents:
diff changeset
   146
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parents:
diff changeset
   147
def has_docutils():
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parents:
diff changeset
   148
    try:
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parents:
diff changeset
   149
        from docutils.core import publish_cmdline
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parents:
diff changeset
   150
        return True
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parents:
diff changeset
   151
    except ImportError:
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parents:
diff changeset
   152
        return False
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parents:
diff changeset
   153
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   154
def getsvnversion():
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   155
    m = matchoutput('svn --version 2>&1', r'^svn,\s+version\s+(\d+)\.(\d+)')
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   156
    if not m:
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   157
        return (0, 0)
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   158
    return (int(m.group(1)), int(m.group(2)))
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parents:
diff changeset
   159
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parents:
diff changeset
   160
def has_svn15():
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   161
    return getsvnversion() >= (1, 5)
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parents:
diff changeset
   162
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   163
def has_svn13():
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   164
    return getsvnversion() >= (1, 3)
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   165
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   166
def has_svn():
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   167
    return matchoutput('svn --version 2>&1', r'^svn, version') and \
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   168
        matchoutput('svnadmin --version 2>&1', r'^svnadmin, version')
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   169
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   170
def has_svn_bindings():
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   171
    try:
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   172
        import svn.core
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   173
        version = svn.core.SVN_VER_MAJOR, svn.core.SVN_VER_MINOR
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   174
        if version < (1, 4):
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   175
            return False
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   176
        return True
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   177
    except ImportError:
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   178
        return False
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   179
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Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   180
def has_p4():
1069
4e0cef7a70cf cleanup: eradicate long lines
Brodie Rao <brodie@sf.io>
parents: 1063
diff changeset
   181
    return (matchoutput('p4 -V', r'Rev\. P4/') and
4e0cef7a70cf cleanup: eradicate long lines
Brodie Rao <brodie@sf.io>
parents: 1063
diff changeset
   182
            matchoutput('p4d -V', r'Rev\. P4D/'))
1007
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   183
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   184
def has_symlink():
1071
f0ce3dcd5c87 cleanup: replace hasattr() usage with getattr() in hghave
Brodie Rao <brodie@sf.io>
parents: 1070
diff changeset
   185
    if getattr(os, "symlink", None) is None:
1055
dabed2cabd5e tests: teach hghave to actually test for symlink support
Matt Mackall <mpm@selenic.com>
parents: 1032
diff changeset
   186
        return False
1099
55c85631631b tests/hghave: consistently use dir='.', prefix=tempprefix for tempfiles
Mads Kiilerich <mads@kiilerich.com>
parents: 1098
diff changeset
   187
    name = tempfile.mktemp(dir='.', prefix=tempprefix)
1055
dabed2cabd5e tests: teach hghave to actually test for symlink support
Matt Mackall <mpm@selenic.com>
parents: 1032
diff changeset
   188
    try:
dabed2cabd5e tests: teach hghave to actually test for symlink support
Matt Mackall <mpm@selenic.com>
parents: 1032
diff changeset
   189
        os.symlink(".", name)
dabed2cabd5e tests: teach hghave to actually test for symlink support
Matt Mackall <mpm@selenic.com>
parents: 1032
diff changeset
   190
        os.unlink(name)
dabed2cabd5e tests: teach hghave to actually test for symlink support
Matt Mackall <mpm@selenic.com>
parents: 1032
diff changeset
   191
        return True
dabed2cabd5e tests: teach hghave to actually test for symlink support
Matt Mackall <mpm@selenic.com>
parents: 1032
diff changeset
   192
    except (OSError, AttributeError):
dabed2cabd5e tests: teach hghave to actually test for symlink support
Matt Mackall <mpm@selenic.com>
parents: 1032
diff changeset
   193
        return False
1007
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   194
1102
51afb47e2399 tests: introduce hghave hardlinks
Mads Kiilerich <mads@kiilerich.com>
parents: 1101
diff changeset
   195
def has_hardlink():
51afb47e2399 tests: introduce hghave hardlinks
Mads Kiilerich <mads@kiilerich.com>
parents: 1101
diff changeset
   196
    from mercurial import util
51afb47e2399 tests: introduce hghave hardlinks
Mads Kiilerich <mads@kiilerich.com>
parents: 1101
diff changeset
   197
    fh, fn = tempfile.mkstemp(dir='.', prefix=tempprefix)
51afb47e2399 tests: introduce hghave hardlinks
Mads Kiilerich <mads@kiilerich.com>
parents: 1101
diff changeset
   198
    os.close(fh)
51afb47e2399 tests: introduce hghave hardlinks
Mads Kiilerich <mads@kiilerich.com>
parents: 1101
diff changeset
   199
    name = tempfile.mktemp(dir='.', prefix=tempprefix)
51afb47e2399 tests: introduce hghave hardlinks
Mads Kiilerich <mads@kiilerich.com>
parents: 1101
diff changeset
   200
    try:
51afb47e2399 tests: introduce hghave hardlinks
Mads Kiilerich <mads@kiilerich.com>
parents: 1101
diff changeset
   201
        try:
51afb47e2399 tests: introduce hghave hardlinks
Mads Kiilerich <mads@kiilerich.com>
parents: 1101
diff changeset
   202
            util.oslink(fn, name)
51afb47e2399 tests: introduce hghave hardlinks
Mads Kiilerich <mads@kiilerich.com>
parents: 1101
diff changeset
   203
            os.unlink(name)
51afb47e2399 tests: introduce hghave hardlinks
Mads Kiilerich <mads@kiilerich.com>
parents: 1101
diff changeset
   204
            return True
51afb47e2399 tests: introduce hghave hardlinks
Mads Kiilerich <mads@kiilerich.com>
parents: 1101
diff changeset
   205
        except OSError:
51afb47e2399 tests: introduce hghave hardlinks
Mads Kiilerich <mads@kiilerich.com>
parents: 1101
diff changeset
   206
            return False
51afb47e2399 tests: introduce hghave hardlinks
Mads Kiilerich <mads@kiilerich.com>
parents: 1101
diff changeset
   207
    finally:
51afb47e2399 tests: introduce hghave hardlinks
Mads Kiilerich <mads@kiilerich.com>
parents: 1101
diff changeset
   208
        os.unlink(fn)
51afb47e2399 tests: introduce hghave hardlinks
Mads Kiilerich <mads@kiilerich.com>
parents: 1101
diff changeset
   209
1007
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   210
def has_tla():
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   211
    return matchoutput('tla --version 2>&1', r'The GNU Arch Revision')
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   212
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   213
def has_gpg():
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   214
    return matchoutput('gpg --version 2>&1', r'GnuPG')
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   215
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   216
def has_unix_permissions():
1099
55c85631631b tests/hghave: consistently use dir='.', prefix=tempprefix for tempfiles
Mads Kiilerich <mads@kiilerich.com>
parents: 1098
diff changeset
   217
    d = tempfile.mkdtemp(dir='.', prefix=tempprefix)
1007
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   218
    try:
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   219
        fname = os.path.join(d, 'foo')
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   220
        for umask in (077, 007, 022):
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   221
            os.umask(umask)
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   222
            f = open(fname, 'w')
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   223
            f.close()
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   224
            mode = os.stat(fname).st_mode
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   225
            os.unlink(fname)
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   226
            if mode & 0777 != ~umask & 0666:
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   227
                return False
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   228
        return True
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   229
    finally:
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   230
        os.rmdir(d)
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   231
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   232
def has_pyflakes():
1089
f26e9129f65b hghave: wrap command in 'sh -c "..."' for has_pyflakes()
Adrian Buehlmann <adrian@cadifra.com>
parents: 1072
diff changeset
   233
    return matchoutput("sh -c \"echo 'import re' 2>&1 | pyflakes\"",
1007
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   234
                       r"<stdin>:1: 're' imported but unused",
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   235
                       True)
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   236
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   237
def has_pygments():
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   238
    try:
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   239
        import pygments
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   240
        return True
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   241
    except ImportError:
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   242
        return False
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   243
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   244
def has_outer_repo():
1105
9b2932ca75fd tests: hghave outer-repo should be true even if a bad repo is found
Mads Kiilerich <mads@kiilerich.com>
parents: 1102
diff changeset
   245
    # failing for other reasons than 'no repo' imply that there is a repo
9b2932ca75fd tests: hghave outer-repo should be true even if a bad repo is found
Mads Kiilerich <mads@kiilerich.com>
parents: 1102
diff changeset
   246
    return not matchoutput('hg root 2>&1',
9b2932ca75fd tests: hghave outer-repo should be true even if a bad repo is found
Mads Kiilerich <mads@kiilerich.com>
parents: 1102
diff changeset
   247
                           r'abort: no repository found', True)
1007
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   248
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   249
def has_ssl():
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   250
    try:
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   251
        import ssl
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   252
        import OpenSSL
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   253
        OpenSSL.SSL.Context
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   254
        return True
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   255
    except ImportError:
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   256
        return False
4fad25af75dd Add hghave test as of 5635a4017061
Christian Ebert <blacktrash@gmx.net>
parents:
diff changeset
   257
1012
018ef69bbe2f tests: use 'hghave no-windows' to avoid testing reserved file names on windows
Mads Kiilerich <mads@kiilerich.com>
parents: 1010
diff changeset
   258
def has_windows():
018ef69bbe2f tests: use 'hghave no-windows' to avoid testing reserved file names on windows
Mads Kiilerich <mads@kiilerich.com>
parents: 1010
diff changeset
   259
    return os.name == 'nt'
018ef69bbe2f tests: use 'hghave no-windows' to avoid testing reserved file names on windows
Mads Kiilerich <mads@kiilerich.com>
parents: 1010
diff changeset
   260
1013
e00f51032041 tests: use 'hghave system-sh' to guard tests that requires sh in system()
Mads Kiilerich <mads@kiilerich.com>
parents: 1012
diff changeset
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def has_system_sh():
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    return os.name != 'nt'
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def has_serve():
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    return os.name != 'nt' # gross approximation
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def has_tic():
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    return matchoutput('test -x "`which tic`"', '')
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def has_msys():
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    return os.getenv('MSYSTEM')
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1007
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checks = {
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    "true": (lambda: True, "yak shaving"),
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    "false": (lambda: False, "nail clipper"),
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    "baz": (has_baz, "GNU Arch baz client"),
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    "bzr": (has_bzr, "Canonical's Bazaar client"),
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    "bzr114": (has_bzr114, "Canonical's Bazaar client >= 1.14"),
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    "cacheable": (has_cacheable_fs, "cacheable filesystem"),
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    "cvs": (has_cvs, "cvs client/server"),
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    "darcs": (has_darcs, "darcs client"),
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    "docutils": (has_docutils, "Docutils text processing library"),
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    "eol-in-paths": (has_eol_in_paths, "end-of-lines in paths"),
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    "execbit": (has_executablebit, "executable bit"),
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    "fifo": (has_fifo, "named pipes"),
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    "gettext": (has_gettext, "GNU Gettext (msgfmt)"),
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    "git": (has_git, "git command line client"),
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    "gpg": (has_gpg, "gpg client"),
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    "hardlink": (has_hardlink, "hardlinks"),
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    "icasefs": (has_icasefs, "case insensitive file system"),
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    "inotify": (has_inotify, "inotify extension support"),
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    "killdaemons": (has_killdaemons, 'killdaemons.py support'),
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    "lsprof": (has_lsprof, "python lsprof module"),
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    "mtn": (has_mtn, "monotone client (>= 1.0)"),
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    "outer-repo": (has_outer_repo, "outer repo"),
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    "p4": (has_p4, "Perforce server and client"),
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    "pyflakes": (has_pyflakes, "Pyflakes python linter"),
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    "pygments": (has_pygments, "Pygments source highlighting library"),
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    "serve": (has_serve, "platform and python can manage 'hg serve -d'"),
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    "ssl": (has_ssl, "python >= 2.6 ssl module and python OpenSSL"),
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    "svn": (has_svn, "subversion client and admin tools"),
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    "svn13": (has_svn13, "subversion client and admin tools >= 1.3"),
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    "svn15": (has_svn15, "subversion client and admin tools >= 1.5"),
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    "svn-bindings": (has_svn_bindings, "subversion python bindings"),
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    "symlink": (has_symlink, "symbolic links"),
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    "system-sh": (has_system_sh, "system() uses sh"),
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    "tic": (has_tic, "terminfo compiler"),
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    "tla": (has_tla, "GNU Arch tla client"),
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    "unix-permissions": (has_unix_permissions, "unix-style permissions"),
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    "windows": (has_windows, "Windows"),
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    "msys": (has_msys, "Windows with MSYS"),
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}