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How to use has_userland_tool method in avocado

Best Python code snippet using avocado_python

iso9660.py

Source:iso9660.py

...7__all__ = ['iso9660', 'Iso9660IsoInfo', 'Iso9660IsoRead', 'Iso9660Mount']8import os, logging, tempfile, shutil9import common10from autotest_lib.client.common_lib import utils11def has_userland_tool(executable):12    '''13    Returns whether the system has a given executable14    '''15    if os.path.isabs(executable):16        return os.path.exists(executable)17    else:18        for d in os.environ['PATH'].split(':'):19            f = os.path.join(d, executable)20            if os.path.exists(f):21                return True22    return False23def has_isoinfo():24    '''25    Returns whether the system has the isoinfo executable26    Maybe more checks could be added to see if isoinfo supports the needed27    features28    '''29    return has_userland_tool('isoinfo')30def has_isoread():31    '''32    Returns whether the system has the isoinfo executable33    Maybe more checks could be added to see if iso-read supports the needed34    features35    '''36    return has_userland_tool('iso-read')37def can_mount():38    '''39    Test wether the current user can perform a loop mount40    AFAIK, this means being root, having mount and iso9660 kernel support41    '''42    if os.getuid() != 0:43        logging.debug('Can not use mount: current user is not "root"')44        return False45    if not has_userland_tool('mount'):46        logging.debug('Can not use mount: missing "mount" tool')47        return False48    if not 'iso9660' in open('/proc/filesystems').read():49        logging.debug('Can not use mount: lack of iso9660 kernel support')50        return False51    return True52class BaseIso9660(object):53    '''54    Represents a ISO9660 filesystem55    This class holds common functionality and has many abstract methods56    '''57    def __init__(self, path):58        self.path = path59        self._verify_path(path)...

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