1 files changed, 54 insertions, 0 deletions
diff --git a/spec/models/performance_monitoring/prometheus_panel_group_spec.rb b/spec/models/performance_monitoring/prometheus_panel_group_spec.rb
new file mode 100644
index 00000000000..2447bb5df94
--- /dev/null
+++ b/spec/models/performance_monitoring/prometheus_panel_group_spec.rb
@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe PerformanceMonitoring::PrometheusPanelGroup do
+  let(:json_content) do
+    {
+      "group" => "Group Title",
+      "panels" => [{
+        "type" => "area-chart",
+        "title" => "Chart Title",
+        "y_label" => "Y-Axis",
+        "metrics" => [{
+          "id" => "metric_of_ages",
+          "unit" => "count",
+          "label" => "Metric of Ages",
+          "query_range" => "http_requests_total"
+        }]
+      }]
+    }
+  end
+
+  describe '.from_json' do
+    subject { described_class.from_json(json_content) }
+
+    it 'creates a PrometheusPanelGroup object' do
+      expect(subject).to be_a PerformanceMonitoring::PrometheusPanelGroup
+      expect(subject.group).to eq(json_content['group'])
+      expect(subject.panels).to all(be_a PerformanceMonitoring::PrometheusPanel)
+    end
+
+    describe 'validations' do
+      context 'when group is missing' do
+        before do
+          json_content['group'] = nil
+        end
+
+        subject { described_class.from_json(json_content) }
+
+        it { expect { subject }.to raise_error(ActiveModel::ValidationError) }
+      end
+
+      context 'when panels are missing' do
+        before do
+          json_content['panels'] = []
+        end
+
+        subject { described_class.from_json(json_content) }
+
+        it { expect { subject }.to raise_error(ActiveModel::ValidationError) }
+      end
+    end
+  end
+end