feat: expose Jupyter shell through web app

tests/test_jupyter_app.py

@@ -1,9 +1,9 @@
 import asyncio
 import unittest
 
-from ipython_shell.jupyter_app import JupyterApp
-from ipython_shell.jupyter_shell import JupyterShell
-from ipython_shell.transport import InputRequest, KernelMessage
+from ipython_shell.jupyter.app import JupyterApp
+from ipython_shell.jupyter.shell import JupyterShell
+from ipython_shell.jupyter.transport import InputRequest, KernelMessage
 
 
 class JupyterShellTests(unittest.IsolatedAsyncioTestCase):
@@ -48,6 +48,52 @@ class JupyterShellTests(unittest.IsolatedAsyncioTestCase):
 
 
 class JupyterAppTests(unittest.IsolatedAsyncioTestCase):
+    async def test_named_shells_have_isolated_namespaces(self):
+        app = JupyterApp()
+        try:
+            _alpha_setup = [
+                message
+                async for message in app.run_code_stream(
+                    "alpha_only = 'alpha'",
+                    shell_name="alpha",
+                )
+            ]
+            beta_view = [
+                message
+                async for message in app.run_code_stream(
+                    "'alpha_only' in globals()",
+                    shell_name="beta",
+                )
+            ]
+            alpha_view = [
+                message
+                async for message in app.run_code_stream(
+                    "alpha_only",
+                    shell_name="alpha",
+                )
+            ]
+        finally:
+            await app.shutdown()
+
+        self.assertEqual(
+            next(
+                message.content["data"]["text/plain"]
+                for message in beta_view
+                if isinstance(message, KernelMessage)
+                and message.msg_type == "execute_result"
+            ),
+            "False",
+        )
+        self.assertEqual(
+            next(
+                message.content["data"]["text/plain"]
+                for message in alpha_view
+                if isinstance(message, KernelMessage)
+                and message.msg_type == "execute_result"
+            ),
+            "'alpha'",
+        )
+
     async def test_app_routes_input_reply_to_the_call(self):
         app = JupyterApp()
         stream = app.run_code_stream(