def _make_host_resolver():
"""Returns a HostResolver instance
The hosts file will be empty but accessible as a py.path.local
instance using the ``hosts`` attribute.
"""
hosts = tempfile.NamedTemporaryFile()
hr = greendns.HostsResolver(fname=hosts.name)
hr.hosts = hosts
hr._last_stat = 0
return hr
def test_default_fname(self):
hr = greendns.HostsResolver()
assert os.path.exists(hr.fname)
