1 files changed, 52 insertions, 0 deletions
diff --git a/spec/lib/gitlab/metrics/dashboard/validator_spec.rb b/spec/lib/gitlab/metrics/dashboard/validator_spec.rb
index c4cda271408..eb67ea2b7da 100644
--- a/spec/lib/gitlab/metrics/dashboard/validator_spec.rb
+++ b/spec/lib/gitlab/metrics/dashboard/validator_spec.rb
@@ -143,4 +143,56 @@ RSpec.describe Gitlab::Metrics::Dashboard::Validator do
       end
     end
   end
+
+  describe '#errors' do
+    context 'valid dashboard schema' do
+      it 'returns no errors' do
+        expect(described_class.errors(valid_dashboard)).to eq []
+      end
+
+      context 'with duplicate metric_ids' do
+        it 'returns errors' do
+          expect(described_class.errors(duplicate_id_dashboard)).to eq [Gitlab::Metrics::Dashboard::Validator::Errors::DuplicateMetricIds.new]
+        end
+      end
+
+      context 'with dashboard_path and project' do
+        subject { described_class.errors(valid_dashboard, dashboard_path: 'test/path.yml', project: project) }
+
+        context 'with no conflicting metric identifiers in db' do
+          it { is_expected.to eq [] }
+        end
+
+        context 'with metric identifier present in current dashboard' do
+          before do
+            create(:prometheus_metric,
+                   identifier:     'metric_a1',
+                   dashboard_path: 'test/path.yml',
+                   project:        project
+                  )
+          end
+
+          it { is_expected.to eq [] }
+        end
+
+        context 'with metric identifier present in another dashboard' do
+          before do
+            create(:prometheus_metric,
+                   identifier:     'metric_a1',
+                   dashboard_path: 'some/other/dashboard/path.yml',
+                   project:        project
+                  )
+          end
+
+          it { is_expected.to eq [Gitlab::Metrics::Dashboard::Validator::Errors::DuplicateMetricIds.new] }
+        end
+      end
+    end
+
+    context 'invalid dashboard schema' do
+      it 'returns collection of validation errors' do
+        expect(described_class.errors(invalid_dashboard)).to all be_kind_of(Gitlab::Metrics::Dashboard::Validator::Errors::SchemaValidationError)
+      end
+    end
+  end
 end