1 files changed, 93 insertions, 0 deletions
diff --git a/spec/models/environment_spec.rb b/spec/models/environment_spec.rb
index f8123cb518e..b0635c6a90a 100644
--- a/spec/models/environment_spec.rb
+++ b/spec/models/environment_spec.rb
@@ -432,6 +432,99 @@ describe Environment, models: true do
     end
   end
 
+  describe '#has_metrics?' do
+    subject { environment.has_metrics? }
+
+    context 'when the enviroment is available' do
+      context 'with a deployment service' do
+        let(:project) { create(:prometheus_project) }
+
+        context 'and a deployment' do
+          let!(:deployment) { create(:deployment, environment: environment) }
+          it { is_expected.to be_truthy }
+        end
+
+        context 'but no deployments' do
+          it { is_expected.to be_falsy }
+        end
+      end
+
+      context 'without a monitoring service' do
+        it { is_expected.to be_falsy }
+      end
+    end
+
+    context 'when the environment is unavailable' do
+      let(:project) { create(:prometheus_project) }
+
+      before do
+        environment.stop
+      end
+
+      it { is_expected.to be_falsy }
+    end
+  end
+
+  describe '#additional_metrics' do
+    let(:project) { create(:prometheus_project) }
+    subject { environment.additional_metrics }
+
+    context 'when the environment has additional metrics' do
+      before do
+        allow(environment).to receive(:has_additional_metrics?).and_return(true)
+      end
+
+      it 'returns the additional metrics from the deployment service' do
+        expect(project.prometheus_service).to receive(:additional_environment_metrics)
+                                                .with(environment)
+                                                .and_return(:fake_metrics)
+
+        is_expected.to eq(:fake_metrics)
+      end
+    end
+
+    context 'when the environment does not have metrics' do
+      before do
+        allow(environment).to receive(:has_additional_metrics?).and_return(false)
+      end
+
+      it { is_expected.to be_nil }
+    end
+  end
+
+  describe '#has_additional_metrics??' do
+    subject { environment.has_additional_metrics? }
+
+    context 'when the enviroment is available' do
+      context 'with a deployment service' do
+        let(:project) { create(:prometheus_project) }
+
+        context 'and a deployment' do
+          let!(:deployment) { create(:deployment, environment: environment) }
+          it { is_expected.to be_truthy }
+        end
+
+        context 'but no deployments' do
+          it { is_expected.to be_falsy }
+        end
+      end
+
+      context 'without a monitoring service' do
+        it { is_expected.to be_falsy }
+      end
+    end
+
+    context 'when the environment is unavailable' do
+      let(:project) { create(:prometheus_project) }
+
+      before do
+        environment.stop
+      end
+
+      it { is_expected.to be_falsy }
+    end
+  end
+
   describe '#slug' do
     it "is automatically generated" do
       expect(environment.slug).not_to be_nil