python-uvicorn: add test script

Add a CI test.sh exercising basic package functionality.

Signed-off-by: Alexandru Ardelean <alex@shruggie.ro>

lang/python/python-uvicorn/test.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+[ "$1" = python3-uvicorn ] || exit 0
+
+python3 - << 'EOF'
+
+import uvicorn
+
+# Config.load() imports and wires the HTTP/WS protocol backends (h11, etc.)
+# for a trivial ASGI app - a real functional check that never binds a port.
+async def app(scope, receive, send):
+    pass
+
+cfg = uvicorn.Config(app, host="127.0.0.1", port=8000, log_level="warning", loop="asyncio")
+cfg.load()
+assert cfg.loaded is True
+assert uvicorn.Server(cfg).config is cfg
+
+EOF