Tests: added ASGI HTTP applications.

test/python/threading/asgi.py

@@ -0,0 +1,42 @@
+import asyncio
+import sys
+import time
+import threading
+
+
+class Foo(threading.Thread):
+    num = 10
+
+    def __init__(self, x):
+        self.__x = x
+        threading.Thread.__init__(self)
+
+    def log_index(self, index):
+        sys.stderr.write(
+            "(" + str(index) + ") Thread: " + str(self.__x) + "\n"
+        )
+        sys.stderr.flush()
+
+    def run(self):
+        i = 0
+        for _ in range(3):
+            self.log_index(i)
+            i += 1
+            time.sleep(1)
+            self.log_index(i)
+            i += 1
+
+
+async def application(scope, receive, send):
+    assert scope['type'] == 'http'
+
+    Foo(Foo.num).start()
+    Foo.num += 10
+
+    await send({
+        'type': 'http.response.start',
+        'status': 200,
+        'headers': [
+            (b'content-length', b'0'),
+        ]
+    })