Return empty result instead of null value in mock

1 files changed, 2 insertions, 2 deletions

diff --git a/controller-server/src/test/java/com/yahoo/vespa/hosted/controller/integration/ConfigServerMock.java b/controller-server/src/test/java/com/yahoo/vespa/hosted/controller/integration/ConfigServerMock.java
index c62c39149b2..fbc7bf20a24 100644
--- a/controller-server/src/test/java/com/yahoo/vespa/hosted/controller/integration/ConfigServerMock.java
+++ b/controller-server/src/test/java/com/yahoo/vespa/hosted/controller/integration/ConfigServerMock.java
@@ -332,8 +332,8 @@ public class ConfigServerMock extends AbstractComponent implements ConfigServer
     }
 
     @Override
-    public Map<ApplicationId, List<ClusterMetrics>> getMetrics(ZoneId zoneId) {
-        return null;
+    public List<ClusterMetrics> getMetrics(DeploymentId deployment) {
+        return List.of();
     }
 
     // Returns a canned example response