1 files changed, 9 insertions, 1 deletions
diff --git a/spec/models/performance_monitoring/prometheus_panel_group_spec.rb b/spec/models/performance_monitoring/prometheus_panel_group_spec.rb
index 2447bb5df94..ecf7e13a9a3 100644
--- a/spec/models/performance_monitoring/prometheus_panel_group_spec.rb
+++ b/spec/models/performance_monitoring/prometheus_panel_group_spec.rb
@@ -30,9 +30,17 @@ describe PerformanceMonitoring::PrometheusPanelGroup do
     end
 
     describe 'validations' do
+      context 'json_content is not a hash' do
+        let(:json_content) { nil }
+
+        subject { described_class.from_json(json_content) }
+
+        it { expect { subject }.to raise_error(ActiveModel::ValidationError) }
+      end
+
       context 'when group is missing' do
         before do
-          json_content['group'] = nil
+          json_content.delete('group')
         end
 
         subject { described_class.from_json(json_content) }