'No cache control, but the content is not sensitive (is an image)
so no bug is stored in KB.'

def test_cache_control_images(self):

    body = 'abc'
    url = URL('https://www.w3af.com/image.png')
    headers = Headers([('content-type', 'image/jpeg')])
    request = FuzzableRequest(url, method='GET')
    resp = HTTPResponse(200, body, headers, url, url, _id=1)
    self.plugin.grep(request, resp)
    self.plugin.end()
    infos = kb.kb.get('cache_control', 'cache_control')
    self.assertEquals(len(infos), 0)
