Fix junit test tab if no test reports

app/assets/javascripts/pipelines/pipeline_details_bundle.js

@@ -134,6 +134,10 @@ export default () => {
     axios
       .get(dataset.testReportsCountEndpoint)
       .then(({ data }) => {
+        if (!data.total_count) {
+          return;
+        }
+
         document.querySelector('.js-test-report-badge-counter').innerHTML = data.total_count;
       })
       .catch(() => {});

spec/features/projects/pipelines/pipeline_spec.rb

@@ -356,7 +356,7 @@ describe 'Pipeline', :js do
       end
     end
 
-    context 'test tabs' do
+    describe 'test tabs' do
       let(:pipeline) { create(:ci_pipeline, :with_test_reports, project: project) }
 
       before do
@@ -364,6 +364,7 @@ describe 'Pipeline', :js do
         wait_for_requests
       end
 
+      context 'with test reports' do
         it 'shows badge counter in Tests tab' do
           expect(pipeline.test_reports.total_count).to eq(4)
           expect(page.find('.js-test-report-badge-counter').text).to eq(pipeline.test_reports.total_count.to_s)
@@ -382,6 +383,15 @@ describe 'Pipeline', :js do
         end
       end
 
+      context 'without test reports' do
+        let(:pipeline) { create(:ci_pipeline, project: project) }
+
+        it 'shows nothing' do
+          expect(page.find('.js-test-report-badge-counter', visible: :all).text).to eq("")
+        end
+      end
+    end
+
     context 'retrying jobs' do
       before do
         visit_pipeline