'L{Headers.getRawHeaders} returns the specified default value when no
header is found.'

def test_getRawHeadersDefaultValue(self):

    h = Headers()
    default = object()
    self.assertIdentical(h.getRawHeaders(u'test', default), default)
    self.assertIdentical(h.getRawHeaders(u'test', None), None)
    self.assertEqual(h.getRawHeaders(u'test', [None]), [None])
    self.assertEqual(h.getRawHeaders(u'test', [u'\u2603']), [u'\u2603'])
