Add tests for projects#reset_cache

app/controllers/projects_controller.rb

@@ -176,6 +176,12 @@ class ProjectsController < Projects::ApplicationController
   end
 
   def reset_cache
+    if ResetProjectCacheService.new(@project, current_user).execute
+      flash[:notice] = _("Project cache successfully reset.")
+    else
+      flash[:error] = _("Unable to reset project cache.")
+    end
+    redirect_to project_pipelines_path(@project)
   end
 
   def export

spec/controllers/projects_controller_spec.rb

@@ -686,6 +686,53 @@ describe ProjectsController do
     end
   end
 
+  describe '#reset_cache' do
+    before do
+      sign_in(user)
+
+      project.add_master(user)
+
+      allow(ResetProjectCacheService).to receive_message_chain(:new, :execute).and_return(true)
+    end
+
+    subject { get :reset_cache, namespace_id: project.namespace, id: project }
+
+    it 'calls reset project cache service' do
+      expect(ResetProjectCacheService).to receive_message_chain(:new, :execute)
+
+      subject
+    end
+
+    it 'redirects to project pipelines path' do
+      subject
+
+      expect(response).to have_gitlab_http_status(:redirect)
+      expect(response).to redirect_to(project_pipelines_path(project))
+    end
+
+    context 'when service returns successfully' do
+      it 'sets the flash notice variable' do
+        subject
+
+        expect(controller).to set_flash[:notice]
+        expect(controller).not_to set_flash[:error]
+      end
+    end
+
+    context 'when service does not return successfully' do
+      before do
+        allow(ResetProjectCacheService).to receive_message_chain(:new, :execute).and_return(false)
+      end
+
+      it 'sets the flash error variable' do
+        subject
+
+        expect(controller).not_to set_flash[:notice]
+        expect(controller).to set_flash[:error]
+      end
+    end
+  end
+
   describe '#export' do
     before do
       sign_in(user)