Merge ~aluria/charm-prometheus-ceph-exporter:fix-tests into charm-prometheus-ceph-exporter:master

[Alvaro Uria]

[Drew Freiberger (afreiberger)]

Lgtm

review: Approve

diff --git a/src/tests/functional/tests/tests.yaml b/src/tests/functional/tests/tests.yaml
index fe40a00..082e66e 100644
--- a/src/tests/functional/tests/tests.yaml
+++ b/src/tests/functional/tests/tests.yaml
@@ -16,3 +16,6 @@ target_deploy_status:
   grafana:
     workload-status: active
     workload-status-message: Started grafana-server
+  nrpe:
+    workload-status: blocked
+    workload-status-message: Nagios server not configured or related
diff --git a/src/tests/unit/test_reactive_ceph_exporter.py b/src/tests/unit/test_reactive_ceph_exporter.py
index bf9e810..0e4b5ad 100644
--- a/src/tests/unit/test_reactive_ceph_exporter.py
+++ b/src/tests/unit/test_reactive_ceph_exporter.py
@@ -49,6 +49,7 @@ class MockCephClient:
         """Class constructor."""
         pass
 
+    @property
     def auth(self):
         """Fake authentication."""
         return True
@@ -57,6 +58,7 @@ class MockCephClient:
         """Hard-code monitor hosts."""
         return ["1.2.3.4", "5.6.7.8"]
 
+    @property
     def key(self):
         """Hard-code ceph client key."""
         return "mockcephclientkey"