micropython: add micropython component

components/language/micropython/tests/extmod/uasyncio_fair.py

@@ -0,0 +1,34 @@
+# Test fairness of scheduler
+
+try:
+    import uasyncio as asyncio
+except ImportError:
+    try:
+        import asyncio
+    except ImportError:
+        print("SKIP")
+        raise SystemExit
+
+
+async def task(id, t):
+    print("task start", id)
+    while True:
+        if t > 0:
+            print("task work", id)
+        await asyncio.sleep(t)
+
+
+async def main():
+    t1 = asyncio.create_task(task(1, -0.01))
+    t2 = asyncio.create_task(task(2, 0.1))
+    t3 = asyncio.create_task(task(3, 0.18))
+    t4 = asyncio.create_task(task(4, -100))
+    await asyncio.sleep(0.5)
+    t1.cancel()
+    t2.cancel()
+    t3.cancel()
+    t4.cancel()
+    print("finish")
+
+
+asyncio.run(main())