Add test of running the server

test/test_serve.py

@@ -0,0 +1,29 @@
+import unittest
+import asyncio
+import io
+import multiprocessing
+import urllib.request
+import time
+
+import grole
+
+def simple_server():
+    app = grole.Grole()
+
+    @app.route('/')
+    def hello(env, req):
+        return 'Hello, World!'
+
+    app.run()
+
+
+class TestServe(unittest.TestCase):
+
+    def test_simple(self):
+        p = multiprocessing.Process(target=simple_server)
+        p.start()
+        time.sleep(0.1)
+        with urllib.request.urlopen('http://localhost:1234') as response:
+               html = response.read()
+               self.assertEqual(html, b'Hello, World!')
+        p.terminate()