Add agent test code.

Signed-off-by: Saikrishna Arcot <[email protected]>

tests/test_agent.py

@@ -0,0 +1,27 @@
+import asyncio
+import os
+import sys
+import time
+from unittest import TestCase
+
+modules_path = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+sys.path.insert(0, os.path.join(modules_path, 'src'))
+
+import ax_interface
+
+class SonicMIB(metaclass=ax_interface.mib.MIBMeta):
+    """
+    Test
+    """
+
+class TestAgentLoop(TestCase):
+
+    async def delayed_shutdown(self, agent):
+        await asyncio.sleep(5)
+        await agent.shutdown()
+
+    def test_agent_loop(self):
+        event_loop = asyncio.get_event_loop()
+        agent = ax_interface.Agent(SonicMIB, 5, event_loop)
+        event_loop.create_task(self.delayed_shutdown(agent))
+        event_loop.run_until_complete(agent.run_in_event_loop())