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Viewing changes to bzrlib/tests/features.py

  • Committer: Robert Collins
  • Date: 2010-05-06 11:08:10 UTC
  • mto: This revision was merged to the branch mainline in revision 5223.
  • Revision ID: robertc@robertcollins.net-20100506110810-h3j07fh5gmw54s25
Cleaner matcher matching revised unlocking protocol.

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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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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')