Hides ADO banner for certain projects

ADO banner is being hidden if:
- Project has no CI configuration
- Project has CI disabled

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/52446

app/helpers/projects_helper.rb

@@ -204,12 +204,10 @@ module ProjectsHelper
       current_user.require_extra_setup_for_git_auth?
   end
-  def show_auto_devops_implicitly_enabled_banner?(project)
-    cookie_key = "hide_auto_devops_implicitly_enabled_banner_#{project.id}"
-    project.has_auto_devops_implicitly_enabled? &&
-      cookies[cookie_key.to_sym].blank? &&
-      (project.owner == current_user || project.team.maintainer?(current_user))
+  def show_auto_devops_implicitly_enabled_banner?(project, user)
+    return false unless user_can_see_auto_devops_implicitly_enabled_banner?(project, user)
+    cookies["hide_auto_devops_implicitly_enabled_banner_#{project.id}".to_sym].blank?
   end
   def link_to_set_password
@@ -579,4 +577,11 @@ module ProjectsHelper
       gcp
     ]
   end
+
+  def user_can_see_auto_devops_implicitly_enabled_banner?(project, user)
+    Ability.allowed?(user, :admin_project, project) &&
+      project.has_auto_devops_implicitly_enabled? &&
+      project.builds_enabled? &&
+      !project.repository.gitlab_ci_yml
+  end
 end

app/views/shared/_auto_devops_implicitly_enabled_banner.html.haml

-- if show_auto_devops_implicitly_enabled_banner?(project)
+- if show_auto_devops_implicitly_enabled_banner?(project, current_user)
   .auto-devops-implicitly-enabled-banner.alert.alert-warning
     - more_information_link = link_to _('More information'), help_page_path('topics/autodevops/index.md'), target: '_blank', class: 'alert-link'
     - auto_devops_message = s_("AutoDevOps|The Auto DevOps pipeline has been enabled and will be used if no alternative CI configuration file is found. %{more_information_link}") % { more_information_link: more_information_link }

changelogs/unreleased/52446-hide-ado-project-banner-for-ci-file-or-ci-disabled.yml

+---
+title: Don't show Auto DevOps enabled banner for projects with CI file or CI disabled
+merge_request: 24067
+author:
+type: other

spec/helpers/projects_helper_spec.rb

@@ -629,4 +629,103 @@ describe ProjectsHelper do
       end
     end
   end
+
+  describe '#show_auto_devops_implicitly_enabled_banner?' do
+    using RSpec::Parameterized::TableSyntax
+
+    let(:user) { create(:user) }
+
+    let(:feature_visibilities) do
+      {
+        enabled: ProjectFeature::ENABLED,
+        disabled: ProjectFeature::DISABLED
+      }
+    end
+
+    where(:global_setting, :project_setting, :builds_visibility, :gitlab_ci_yml, :user_access, :result) do
+      # With ADO implicitly enabled scenarios
+      true | nil | :disabled | true  | :developer  | false
+      true | nil | :disabled | true  | :maintainer | false
+      true | nil | :disabled | true  | :owner      | false
+
+      true | nil | :disabled | false | :developer  | false
+      true | nil | :disabled | false | :maintainer | false
+      true | nil | :disabled | false | :owner      | false
+
+      true | nil | :enabled  | true  | :developer  | false
+      true | nil | :enabled  | true  | :maintainer | false
+      true | nil | :enabled  | true  | :owner      | false
+
+      true | nil | :enabled  | false | :developer  | false
+      true | nil | :enabled  | false | :maintainer | true
+      true | nil | :enabled  | false | :owner      | true
+
+      # With ADO enabled scenarios
+      true | true | :disabled | true  | :developer  | false
+      true | true | :disabled | true  | :maintainer | false
+      true | true | :disabled | true  | :owner      | false
+
+      true | true | :disabled | false | :developer  | false
+      true | true | :disabled | false | :maintainer | false
+      true | true | :disabled | false | :owner      | false
+
+      true | true | :enabled  | true  | :developer  | false
+      true | true | :enabled  | true  | :maintainer | false
+      true | true | :enabled  | true  | :owner      | false
+
+      true | true | :enabled  | false | :developer  | false
+      true | true | :enabled  | false | :maintainer | false
+      true | true | :enabled  | false | :owner      | false
+
+      # With ADO disabled scenarios
+      true | false | :disabled | true  | :developer  | false
+      true | false | :disabled | true  | :maintainer | false
+      true | false | :disabled | true  | :owner      | false
+
+      true | false | :disabled | false | :developer  | false
+      true | false | :disabled | false | :maintainer | false
+      true | false | :disabled | false | :owner      | false
+
+      true | false | :enabled  | true  | :developer  | false
+      true | false | :enabled  | true  | :maintainer | false
+      true | false | :enabled  | true  | :owner      | false
+
+      true | false | :enabled  | false | :developer  | false
+      true | false | :enabled  | false | :maintainer | false
+      true | false | :enabled  | false | :owner      | false
+    end
+
+    def grant_user_access(project, user, access)
+      case access
+      when :developer, :maintainer
+        project.add_user(user, access)
+      when :owner
+        project.namespace.update(owner: user)
+      end
+    end
+
+    with_them do
+      let(:project) do
+        if project_setting.nil?
+          create(:project, :repository)
+        else
+          create(:project, :repository, :auto_devops)
+        end
+      end
+
+      before do
+        stub_application_setting(auto_devops_enabled: global_setting)
+
+        allow_any_instance_of(Repository).to receive(:gitlab_ci_yml).and_return(gitlab_ci_yml)
+
+        grant_user_access(project, user, user_access)
+        project.project_feature.update_attribute(:builds_access_level, feature_visibilities[builds_visibility])
+        project.auto_devops.update_attribute(:enabled, project_setting) unless project_setting.nil?
+      end
+
+      subject { helper.show_auto_devops_implicitly_enabled_banner?(project, user) }
+
+      it { is_expected.to eq(result) }
+    end
+  end
 end