Merge branch 'sh-fix-issue-404-epics' into 'master'

Fix 404 errors when "No epic" selected

Closes #226999

See merge request gitlab-org/gitlab!36137

ee/app/services/ee/issues/base_service.rb

@@ -26,7 +26,7 @@ module EE
 
       def find_epic(issue)
         id = params.delete(:epic_id)
-        return unless id.present?
+        return if id.to_i.zero?
 
         group = issue.project.group
         return unless group.present?

ee/changelogs/unreleased/sh-fix-issue-404-epics.yml

+---
+title: Fix 404 errors when "No epic" selected
+merge_request: 36137
+author:
+type: fixed

ee/spec/features/projects/issues/user_creates_issue_spec.rb

@@ -3,16 +3,20 @@
 require "spec_helper"
 
 RSpec.describe "User creates issue", :js do
-  let(:user) { create(:user) }
-  let(:group) { create(:group, :public) }
-  let(:project) { create(:project_empty_repo, :public, namespace: group) }
-  let!(:epic) { create(:epic, group: group, title: 'Sample epic', author: user) }
+  let_it_be(:user) { create(:user) }
+  let_it_be(:group) { create(:group, :public) }
+  let_it_be(:project) { create(:project_empty_repo, :public, namespace: group) }
+  let_it_be(:epic) { create(:epic, group: group, title: 'Sample epic', author: user) }
+  let(:issue_title) { '500 error on profile' }
+
+  before_all do
+    group.add_developer(user)
+  end
 
   before do
     stub_licensed_features(issue_weights: true)
     stub_licensed_features(epics: true)
 
-    group.add_developer(user)
     sign_in(user)
 
     visit(new_project_issue_path(project))
@@ -20,7 +24,6 @@ RSpec.describe "User creates issue", :js do
 
   context "with weight set" do
     it "creates issue" do
-      issue_title = "500 error on profile"
       weight = "7"
 
       fill_in("Title", with: issue_title)
@@ -36,19 +39,30 @@ RSpec.describe "User creates issue", :js do
     end
   end
 
-  context "with epic set" do
-    it "creates issue" do
-      issue_title = "500 error on profile"
-
+  context 'with epics' do
+    before do
       fill_in("Title", with: issue_title)
-      page.within('.issue-epic .js-epic-block') do
-        page.find('.js-epic-select').click
-        wait_for_requests
+      scroll_to(page.find('.epic-dropdown-container', visible: false))
+    end
+
+    it 'creates an issue with no epic' do
+      click_button 'Select epic'
+      click_link('No Epic')
+      click_button('Submit issue')
 
-        page.find('.dropdown-content .gl-link', text: epic.title).click
+      wait_for_all_requests
+
+      page.within(".js-epic-block .js-epic-label") do
+        expect(page).to have_content('None')
       end
 
-      click_button("Submit issue")
+      expect(page).to have_content(issue_title)
+    end
+
+    it 'credates an issue with an epic' do
+      click_button 'Select epic'
+      click_link(epic.title)
+      click_button('Submit issue')
 
       wait_for_all_requests
 

ee/spec/support/shared_examples/services/issue_epic_shared_examples.rb

@@ -13,6 +13,17 @@ RSpec.shared_examples 'issue with epic_id parameter' do
     end
   end
 
+  context 'when epic_id is 0' do
+    let(:params) { { title: 'issue1', epic_id: 0 } }
+
+    it 'ignores epic_id' do
+      issue = execute
+
+      expect(issue).to be_persisted
+      expect(issue.epic).to be_nil
+    end
+  end
+
   context 'when user can not add issues to the epic' do
     before do
       project.add_maintainer(user)