feat: expose Jupyter shell through web app

tests/test_jupyter_webapp.py

@@ -0,0 +1,61 @@
+import json
+import unittest
+
+import httpx
+
+from ipython_webapp.jupyter.app import (
+    InputReply,
+    app,
+    reply_to_input,
+    run_code,
+    shell_app,
+)
+
+
+class JupyterWebAppTests(unittest.IsolatedAsyncioTestCase):
+    async def test_run_endpoint_streams_json_events_with_mime_data(self):
+        transport = httpx.ASGITransport(app=app)
+        async with httpx.AsyncClient(
+            transport=transport,
+            base_url="http://testserver",
+        ) as client:
+            try:
+                response = await client.post(
+                    "/shells/new/run",
+                    content="{'answer': 42}",
+                    headers={"content-type": "text/plain"},
+                )
+            finally:
+                await shell_app.shutdown()
+
+        self.assertEqual(response.status_code, 200)
+        self.assertTrue(
+            response.headers["content-type"].startswith("application/x-ndjson")
+        )
+        events = [json.loads(line) for line in response.text.splitlines()]
+        result = next(event for event in events if event["msg_type"] == "execute_result")
+        self.assertEqual(result["content"]["data"]["text/plain"], "{'answer': 42}")
+
+    async def test_input_request_can_be_replied_to_while_run_streams(self):
+        try:
+            response = await run_code("new", "answer = input('name? '); answer")
+            self.assertEqual(response.media_type, "application/x-ndjson")
+            events = []
+            async for line in response.body_iterator:
+                event = json.loads(line)
+                events.append(event)
+                if event["type"] == "input_request":
+                    reply = await reply_to_input(
+                        event["call_id"],
+                        InputReply(value="Ada"),
+                    )
+                    self.assertEqual(reply.status_code, 204)
+        finally:
+            await shell_app.shutdown()
+
+        result = next(event for event in events if event.get("msg_type") == "execute_result")
+        self.assertEqual(result["content"]["data"]["text/plain"], "'Ada'")
+
+
+if __name__ == "__main__":
+    unittest.main()