Add some wait stops in test case to avoid races

Author: cderici

tests/integration/test_charmhub.py

@@ -2,6 +2,7 @@
 
 from .. import base
 from juju.errors import JujuAPIError, JujuError
+from juju import jasyncio
 
 
 @base.bootstrapped
@@ -81,14 +82,18 @@ async def test_subordinate_charm_zero_units(event_loop):
 
         # rsyslog-forwarder-ha is a subordinate charm
         app = await model.deploy('rsyslog-forwarder-ha')
+        await jasyncio.sleep(5)
+
         assert len(app.units) == 0
         await app.destroy()
+        await jasyncio.sleep(5)
 
         # note that it'll error if the user tries to use num_units
         with pytest.raises(JujuError):
             await model.deploy('rsyslog-forwarder-ha', num_units=175)
 
         # (full disclosure: it'll quitely switch to 0 if user enters
-        # num_units=1)
+        # num_units=1, instead of erroring)
         app2 = await model.deploy('rsyslog-forwarder-ha', num_units=1)
+        await jasyncio.sleep(5)
         assert len(app2.units) == 0