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bzrlib/tests/features.py
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""A collection of commonly used 'Features' which bzrlib uses to skip tests."""
 
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import os
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import stat
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from bzrlib.symbol_versioning import deprecated_in
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class _NotRunningAsRoot(tests.Feature):
 
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    def _probe(self):
 
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        try:
 
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            uid = os.getuid()
 
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        except AttributeError:
 
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            # If there is no uid, chances are there is no root either
 
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            return True
 
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        return uid != 0
 
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    def feature_name(self):
 
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        return 'Not running as root'
 
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not_running_as_root = _NotRunningAsRoot()
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apport = tests.ModuleAvailableFeature('apport')
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paramiko = tests.ModuleAvailableFeature('paramiko')
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pycurl = tests.ModuleAvailableFeature('pycurl')
 
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pywintypes = tests.ModuleAvailableFeature('pywintypes')
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subunit = tests.ModuleAvailableFeature('subunit')
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class _BackslashDirSeparatorFeature(tests.Feature):
 
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    def _probe(self):
 
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        try:
 
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            os.lstat(os.getcwd() + '\\')
 
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        except OSError:
 
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            return False
 
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        else:
 
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            return True
 
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    def feature_name(self):
 
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        return "Filesystem treats '\\' as a directory separator."
 
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backslashdir_feature = _BackslashDirSeparatorFeature()
 
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class _PosixPermissionsFeature(tests.Feature):
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    def _probe(self):
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chown_feature = _ChownFeature()
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class ExecutableFeature(tests.Feature):
 
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    """Feature testing whether an executable of a given name is on the PATH."""
 
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    def __init__(self, name):
 
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        super(ExecutableFeature, self).__init__()
 
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        self.name = name
 
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        self._path = None
 
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    @property
 
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    def path(self):
 
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        # This is a property, so accessing path ensures _probe was called
 
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        self.available()
 
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        return self._path
 
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    def _probe(self):
 
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        path = os.environ.get('PATH')
 
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        if path is None:
 
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            return False
 
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        for d in path.split(os.pathsep):
 
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            if d:
 
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                f = os.path.join(d, self.name)
 
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                if os.access(f, os.X_OK):
 
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                    self._path = f
 
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                    return True
 
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        return False
 
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    def feature_name(self):
 
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        return '%s executable' % self.name
 
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bash_feature = ExecutableFeature('bash')
 
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sed_feature = ExecutableFeature('sed')