Added basic cluster stats

TODO add these to django admin

django_q/tests/test_qcluster.py

@@ -1,12 +1,14 @@
 import sys
 import os
 from time import sleep
+from multiprocessing import Event
 
 myPath = os.path.dirname(os.path.abspath(__file__))
 sys.path.insert(0, myPath + '/../')
 
 import pytest
 from django_q import Cluster
+from django_q.main import Sentinel
 
 
 @pytest.fixture(scope='session')
@@ -15,8 +17,17 @@ def cluster():
 
 
 def test_cluster_initial(cluster):
+    assert cluster.sentinel is None
     cluster.start()
     assert cluster.sentinel.is_alive() is True
     cluster.stop()
     sleep(2)
     assert cluster.sentinel.is_alive() is False
+
+def test_sentinel():
+    event = Event()
+    sentinel = Sentinel(event)
+    sleep(1)
+    assert sentinel.monitor_pid > 0
+    assert sentinel.pusher_pid > 0
+    assert len(sentinel.pool) == sentinel.pool_size + 2