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Viewing changes to bzrlib/tests/features.py

Merge cleanup into first-try

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bzrlib/tests/features.py
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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')