Add spec for tasklist

spec/ee/spec/features/epics/update_epic_spec.rb

@@ -3,7 +3,16 @@ require 'spec_helper'
 feature 'Update Epic', :js do
   let(:user) { create(:user) }
   let(:group) { create(:group, :public) }
-  let(:epic) { create(:epic, group: group) }
+
+  let(:markdown) do
+    <<-MARKDOWN.strip_heredoc
+    This is a task list:
+
+    - [ ] Incomplete entry 1
+    MARKDOWN
+  end
+
+  let(:epic) { create(:epic, group: group, description: markdown) }
 
   before do
     stub_licensed_features(epics: true)
@@ -20,6 +29,7 @@ feature 'Update Epic', :js do
   end
 
   context 'when user with developer access displays the epic' do
+
     before do
       group.add_developer(user)
       visit group_epic_path(group, epic)
@@ -36,5 +46,15 @@ feature 'Update Epic', :js do
       expect(find('.issuable-details h2.title')).to have_content('New epic title')
       expect(find('.issuable-details .description')).to have_content('New epic description')
     end
+
+    it 'updates the tasklist' do
+      expect(page).to have_selector('ul.task-list',      count: 1)
+      expect(page).to have_selector('li.task-list-item', count: 1)
+      expect(page).to have_selector('ul input[checked]', count: 0)
+
+      find('.task-list .task-list-item', text: 'Incomplete entry 1').find('input').click
+
+      expect(page).to have_selector('ul input[checked]', count: 1)
+    end
   end
 end