uasyncio.core: Add test for wait_for() call.

uasyncio.core/test_wait_for.py

@@ -0,0 +1,46 @@
+try:
+    import uasyncio.core as asyncio
+except ImportError:
+    import asyncio
+import logging
+#logging.basicConfig(level=logging.DEBUG)
+#asyncio.set_debug(True)
+
+
+def looper(iters):
+    for i in range(iters):
+        print("ping")
+        yield from asyncio.sleep(1.0)
+    return 10
+
+
+def run_to():
+    try:
+        ret = yield from asyncio.wait_for(looper(2), 1)
+        print("result:", ret)
+        assert False
+    except asyncio.TimeoutError:
+        print("Coro timed out")
+
+    print("=================")
+
+    try:
+        ret = yield from asyncio.wait_for(looper(2), 2)
+        print("result:", ret)
+        assert False
+    except asyncio.TimeoutError:
+        print("Coro timed out")
+
+    print("=================")
+
+    try:
+        ret = yield from asyncio.wait_for(looper(2), 3)
+        print("result:", ret)
+    except asyncio.TimeoutError:
+        print("Coro timed out")
+        assert False
+
+
+loop = asyncio.get_event_loop()
+loop.run_until_complete(run_to())
+loop.run_until_complete(asyncio.sleep(1))