Simple HTTP Server for testing HTTP clients.
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Run pip install -U test_server
from unittest import TestCase
import unittest
from urllib.request import urlopen
from test_server import TestServer, Response, HttpHeaderStorage
class UrllibTestCase(TestCase):
   @classmethod
   def setUpClass(cls):
       cls.server = TestServer()
       cls.server.start()
   @classmethod
   def tearDownClass(cls):
       cls.server.stop()
   def setUp(self):
       self.server.reset()
   def test_get(self):
       self.server.add_response(
           Response(
               data=b"hello",
               headers={"foo": "bar"},
           )
       )
       self.server.add_response(Response(data=b"zzz"))
       url = self.server.get_url()
       info = urlopen(url)
       self.assertEqual(b"hello", info.read())
       self.assertEqual("bar", info.headers["foo"])
       info = urlopen(url)
       self.assertEqual(b"zzz", info.read())
       self.assertTrue("bar" not in info.headers)
   unittest.main()