'L{Headers.getRawHeaders} returns the values which have been set for a
given header.'

def test_getRawHeaders(self):

    h = Headers()
    h.setRawHeaders(u'test\xe1', [u'lemur'])
    self.assertEqual(h.getRawHeaders(u'test\xe1'), [u'lemur'])
    self.assertEqual(h.getRawHeaders(u'Test\xe1'), [u'lemur'])
    self.assertEqual(h.getRawHeaders('test\xe1'), ['lemur'])
    self.assertEqual(h.getRawHeaders('Test\xe1'), ['lemur'])
