Improve tests

tests/api_receivet_eth0_1s1r/receiver.py

@@ -0,0 +1,15 @@
+#!/usr/bin/env python
+
+def receivet(node,timeout):
+    ##### Simple receive
+    code, data=node.receivet("eth0",timeout)
+    msg="Received: "+data if code == 0 else "Receive failed code="+str(code)
+    node.log(msg)
+
+def execute(api):
+    # Should works
+    receivet(api,2)
+    # Should failed
+    receivet(api,0.5) # At t=1.5s
+    # Should works (priorities says that communications should occurs before timeout)
+    receivet(api,0.5) # At t=2s (timeout+receive should occur)