tests/extmod/asyncio_as_uasyncio.py: Fix qstr order dependency.

This test depends on the order in which qstrs are stored in ROM, which
affects the order in which `dir()` will probe the object to see what it
supports.  Because of the lazy-loading in asyncio/__init__.py, if it
tries to do e.g. `wait_for_ms` before `funcs` then it will import funcs,
making `funcs` later succeed. But in the other way around, `funcs` will
initially not be found.

This work was funded through GitHub Sponsors.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

tests/extmod/asyncio_as_uasyncio.py

@@ -1,12 +1,33 @@
 try:
     import uasyncio
-    import asyncio
 except ImportError:
     print("SKIP")
     raise SystemExit
 
-x = set(dir(uasyncio))
-y = set(dir(asyncio)) - set(["event", "lock", "stream", "funcs"])
 
-print(x - y)
-print(y - x)
+# Sample of public symbols we expect to see from `asyncio`. Verify they're all
+# available on `uasyncio`.
+expected = [
+    "CancelledError",
+    "create_task",
+    "current_task",
+    "Event",
+    "gather",
+    "get_event_loop",
+    "Lock",
+    "Loop",
+    "open_connection",
+    "run",
+    "run_until_complete",
+    "sleep",
+    "sleep_ms",
+    "start_server",
+    "StreamReader",
+    "StreamWriter",
+    "Task",
+    "ThreadSafeFlag",
+    "wait_for",
+]
+
+for e in expected:
+    getattr(uasyncio, e)

tests/extmod/asyncio_as_uasyncio.py.exp

@@ -1,2 +0,0 @@
-set()
-set()