Added timer

git-svn-id: https://redmine.imt-atlantique.fr/svn/xaal/code/Python/branches/0.7@2795 b32b6428-25c9-4566-ad07-03861ab6144f

libs/lib/tests/test_engine.py

+import time
 import unittest
-from xaal.lib import Engine,Device,MessageFactory,MessageType
+from xaal.lib import Engine,Device,MessageType,CallbackError
 from xaal.lib import engine,tools
 from xaal.lib.messages import Message
 
@@ -11,6 +12,39 @@ def new_engine():
 
 class TestEngine(unittest.TestCase):
 
+    def test_start_stop(self):
+        eng = Engine(port=TEST_PORT)
+        dev = Device("test.basic",tools.get_random_uuid())
+        eng.add_device(dev)
+        eng.start()
+        eng.start() # second start 
+        self.assertEqual(engine.EngineState.started,eng.state)
+        eng.loop()
+        eng.stop()
+        self.assertEqual(engine.EngineState.halted,eng.state)
+
+    def test_timer(self):
+        eng = Engine(port=TEST_PORT)
+        t0 = time.time()
+        def _exit():
+            eng.shutdown()
+        eng.add_timer(_exit,1,1)
+        eng.run()
+        t = time.time() - t0
+        self.assertTrue(t > 1)
+        self.assertTrue(t < 2)
+
+    def test_timer_error(self):
+        eng = Engine(port=TEST_PORT)
+        eng.start()
+        def _error():
+            raise CallbackError(500,"test error")
+        eng.add_timer(_error,0,1)
+        eng.loop()  
+        eng.stop()
+        self.assertEqual(engine.EngineState.halted,eng.state)   
+
+
     def test_run_action(self):
         target = Device("test.basic",tools.get_random_uuid())