import unittest
import urllib.request

import httptest

class TestHTTPServer(httptest.Handler):

    def do_GET(self):
        self.send_response(200)
        self.send_header("Content-type", "text/plain")
        self.end_headers()
        self.wfile.write(bytes("what up", "utf-8"))

class TestHTTPTestMethods(unittest.TestCase):

    @httptest.Server(TestHTTPServer)
    def test_call_response(self, ts=httptest.NoServer()):
        with urllib.request.urlopen(ts.url()) as f:
            self.assertEqual(f.read().decode('utf-8'), "what up")

if __name__ == '__main__':
    unittest.main()