Add explicit message when no runners on admin

app/views/admin/runners/index.html.haml

@@ -58,20 +58,23 @@
 
   %br
 
-  .table-holder
-    %table.table
-      %thead
-        %tr
-          %th Type
-          %th Runner token
-          %th Description
-          %th Version
-          %th Projects
-          %th Jobs
-          %th Tags
-          %th Last contact
-          %th
+  - if @runners.any?
+    .table-holder
+      %table.table
+        %thead
+          %tr
+            %th Type
+            %th Runner token
+            %th Description
+            %th Version
+            %th Projects
+            %th Jobs
+            %th Tags
+            %th Last contact
+            %th
 
-      - @runners.each do |runner|
-        = render "admin/runners/runner", runner: runner
-  = paginate @runners, theme: "gitlab"
+        - @runners.each do |runner|
+          = render "admin/runners/runner", runner: runner
+    = paginate @runners, theme: "gitlab"
+  - else
+    .nothing-here-block No runners found

changelogs/unreleased/33846-no-runner-for-admin.yml

+---
+title: Add explicit message when no runners on admin
+merge_request: 12266
+author: Takuya Noguchi

spec/features/admin/admin_runners_spec.rb

@@ -9,31 +9,54 @@ describe "Admin Runners" do
   end
 
   describe "Runners page" do
-    before do
-      runner = FactoryGirl.create(:ci_runner, contacted_at: Time.now)
-      pipeline = FactoryGirl.create(:ci_pipeline)
-      FactoryGirl.create(:ci_build, pipeline: pipeline, runner_id: runner.id)
-      visit admin_runners_path
-    end
+    let(:pipeline) { create(:ci_pipeline) }
+
+    context "when there are runners" do
+      before do
+        runner = FactoryGirl.create(:ci_runner, contacted_at: Time.now)
+        FactoryGirl.create(:ci_build, pipeline: pipeline, runner_id: runner.id)
+        visit admin_runners_path
+      end
+
+      it 'has all necessary texts' do
+        expect(page).to have_text "To register a new Runner"
+        expect(page).to have_text "Runners with last contact more than a minute ago: 1"
+      end
+
+      describe 'search' do
+        before do
+          FactoryGirl.create :ci_runner, description: 'runner-foo'
+          FactoryGirl.create :ci_runner, description: 'runner-bar'
+        end
+
+        it 'shows correct runner when description matches' do
+          search_form = find('#runners-search')
+          search_form.fill_in 'search', with: 'runner-foo'
+          search_form.click_button 'Search'
+
+          expect(page).to have_content("runner-foo")
+          expect(page).not_to have_content("runner-bar")
+        end
+
+        it 'shows no runner when description does not match' do
+          search_form = find('#runners-search')
+          search_form.fill_in 'search', with: 'runner-baz'
+          search_form.click_button 'Search'
 
-    it 'has all necessary texts' do
-      expect(page).to have_text "To register a new Runner"
-      expect(page).to have_text "Runners with last contact more than a minute ago: 1"
+          expect(page).to have_text 'No runners found'
+        end
+      end
     end
 
-    describe 'search' do
+    context "when there are no runners" do
       before do
-        FactoryGirl.create :ci_runner, description: 'runner-foo'
-        FactoryGirl.create :ci_runner, description: 'runner-bar'
-
-        search_form = find('#runners-search')
-        search_form.fill_in 'search', with: 'runner-foo'
-        search_form.click_button 'Search'
+        visit admin_runners_path
       end
 
-      it 'shows correct runner' do
-        expect(page).to have_content("runner-foo")
-        expect(page).not_to have_content("runner-bar")
+      it 'has all necessary texts including no runner message' do
+        expect(page).to have_text "To register a new Runner"
+        expect(page).to have_text "Runners with last contact more than a minute ago: 0"
+        expect(page).to have_text 'No runners found'
       end
     end
   end