Enable/disable Auto DevOps at Group level

- Includes instance methods on Group model to detect when a group has
AutoDevOps explicitly/implicitly enabled/disabled.
- Includes migration to add a new column to namespaces table
- Add UI necessary modifications
- Add service and controller to update auto devops
related instances
- Updates project and groups auto devops badges

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/52447

25 files changed, 789 insertions, 38 deletions

diff --git a/app/controllers/groups/settings/ci_cd_controller.rb b/app/controllers/groups/settings/ci_cd_controller.rb
index f476f428fdb..f378f7ac79a 100644
--- a/app/controllers/groups/settings/ci_cd_controller.rb
+++ b/app/controllers/groups/settings/ci_cd_controller.rb
@@ -17,6 +17,16 @@ module Groups
         redirect_to group_settings_ci_cd_path
       end
 
+      def update_auto_devops
+        if auto_devops_service.execute
+          flash[:notice] = s_('GroupSettings|Auto DevOps pipeline was updated for the group')
+        else
+          flash[:alert] = s_("GroupSettings|There was a problem updating Auto DevOps pipeline: %{error_messages}." % { error_messages: group.errors.full_messages })
+        end
+
+        redirect_to group_settings_ci_cd_path
+      end
+
       private
 
       def define_ci_variables
@@ -29,6 +39,14 @@ module Groups
       def authorize_admin_group!
         return render_404 unless can?(current_user, :admin_group, group)
       end
+
+      def auto_devops_params
+        params.require(:group).permit(:auto_devops_enabled)
+      end
+
+      def auto_devops_service
+        Groups::AutoDevopsService.new(group, current_user, auto_devops_params)
+      end
     end
   end
 end
diff --git a/app/helpers/auto_devops_helper.rb b/app/helpers/auto_devops_helper.rb
index 67e7e475920..0f0d5350df6 100644
--- a/app/helpers/auto_devops_helper.rb
+++ b/app/helpers/auto_devops_helper.rb
@@ -9,4 +9,17 @@ module AutoDevopsHelper
       !project.repository.gitlab_ci_yml &&
       !project.ci_service
   end
+
+  def badge_for_auto_devops_scope(auto_devops_receiver)
+    return unless auto_devops_receiver.auto_devops_enabled?
+
+    case auto_devops_receiver.first_auto_devops_config[:scope]
+    when :project
+      nil
+    when :group
+      s_('CICD|group enabled')
+    when :instance
+      s_('CICD|instance enabled')
+    end
+  end
 end
diff --git a/app/models/namespace.rb b/app/models/namespace.rb
index a5c479bdc0c..dea34e812ca 100644
--- a/app/models/namespace.rb
+++ b/app/models/namespace.rb
@@ -11,6 +11,7 @@ class Namespace < ApplicationRecord
   include IgnorableColumn
   include FeatureGate
   include FromUnion
+  include Gitlab::Utils::StrongMemoize
 
   ignore_column :deleted_at
 
@@ -267,6 +268,22 @@ class Namespace < ApplicationRecord
     owner.refresh_authorized_projects
   end
 
+  def auto_devops_enabled?
+    first_auto_devops_config[:status]
+  end
+
+  def first_auto_devops_config
+    return { scope: :group, status: auto_devops_enabled } unless auto_devops_enabled.nil?
+
+    strong_memoize(:first_auto_devops_config) do
+      if has_parent?
+        parent.first_auto_devops_config
+      else
+        { scope: :instance, status: Gitlab::CurrentSettings.auto_devops_enabled? }
+      end
+    end
+  end
+
   private
 
   def path_or_parent_changed?
diff --git a/app/models/project.rb b/app/models/project.rb
index 4cc13f372c1..aba63032cdf 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -631,12 +631,21 @@ class Project < ActiveRecord::Base
   end
 
   def has_auto_devops_implicitly_enabled?
-    auto_devops&.enabled.nil? &&
-      (Gitlab::CurrentSettings.auto_devops_enabled? || Feature.enabled?(:force_autodevops_on_by_default, self))
+    auto_devops_config = first_auto_devops_config
+
+    auto_devops_config[:scope] != :project && auto_devops_config[:status]
   end
 
   def has_auto_devops_implicitly_disabled?
-    auto_devops&.enabled.nil? && !(Gitlab::CurrentSettings.auto_devops_enabled? || Feature.enabled?(:force_autodevops_on_by_default, self))
+    auto_devops_config = first_auto_devops_config
+
+    auto_devops_config[:scope] != :project && !auto_devops_config[:status]
+  end
+
+  def first_auto_devops_config
+    return namespace.first_auto_devops_config if auto_devops&.enabled.nil?
+
+    { scope: :project, status: auto_devops&.enabled || Feature.enabled?(:force_autodevops_on_by_default, self) }
   end
 
   def daily_statistics_enabled?
diff --git a/app/services/groups/auto_devops_service.rb b/app/services/groups/auto_devops_service.rb
new file mode 100644
index 00000000000..1925e0cc0ea
--- /dev/null
+++ b/app/services/groups/auto_devops_service.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+module Groups
+  class AutoDevopsService < Groups::BaseService
+    def execute
+      raise Gitlab::Access::AccessDeniedError unless can?(current_user, :admin_group, group)
+
+      group.update(auto_devops_enabled: auto_devops_enabled)
+    end
+
+    private
+
+    def auto_devops_enabled
+      params[:auto_devops_enabled]
+    end
+  end
+end
diff --git a/app/views/groups/settings/ci_cd/_auto_devops_form.html.haml b/app/views/groups/settings/ci_cd/_auto_devops_form.html.haml
new file mode 100644
index 00000000000..e7efc0237c8
--- /dev/null
+++ b/app/views/groups/settings/ci_cd/_auto_devops_form.html.haml
@@ -0,0 +1,15 @@
+= form_for group, url: update_auto_devops_group_settings_ci_cd_path(group), method: :patch do |f|
+  = form_errors(group)
+  %fieldset
+    .form-group
+      .card.auto-devops-card
+        .card-body
+          .form-check
+            = f.check_box :auto_devops_enabled, class: 'form-check-input', checked: group.auto_devops_enabled?
+            = f.label :auto_devops_enabled, class: 'form-check-label' do
+              %strong= s_('GroupSettings|Default to Auto DevOps pipeline for all projects within this group')
+              %span.badge.badge-info#auto-devops-badge= badge_for_auto_devops_scope(group)
+            .form-text.text-muted
+              = s_('GroupSettings|The Auto DevOps pipeline will run if no alternative CI configuration file is found.')
+              = link_to _('More information'), help_page_path('topics/autodevops/index.md'), target: '_blank'
+      = f.submit _('Save changes'), class: 'btn btn-success prepend-top-15'
diff --git a/app/views/groups/settings/ci_cd/show.html.haml b/app/views/groups/settings/ci_cd/show.html.haml
index d9332e36ef5..d0f5cd94002 100644
--- a/app/views/groups/settings/ci_cd/show.html.haml
+++ b/app/views/groups/settings/ci_cd/show.html.haml
@@ -19,3 +19,17 @@
       = _('Register and see your runners for this group.')
   .settings-content
     = render 'groups/runners/index'
+
+%section.settings#auto-devops-settings.no-animate{ class: ('expanded' if expanded) }
+  .settings-header
+    %h4
+      = _('Auto DevOps')
+    %button.btn.btn-default.js-settings-toggle{ type: "button" }
+      = expanded ? _('Collapse') : _('Expand')
+    %p
+      - auto_devops_url = help_page_path('topics/autodevops/index')
+      - auto_devops_start = '<a href="%{url}" target="_blank" rel="noopener noreferrer">'.html_safe % { url: auto_devops_url }
+      = s_('GroupSettings|Auto DevOps will automatically build, test and deploy your application based on a predefined Continuous Integration and Delivery configuration. %{auto_devops_start}Learn more about Auto DevOps%{auto_devops_end}').html_safe % { auto_devops_start: auto_devops_start, auto_devops_end: '</a>'.html_safe }
+
+  .settings-content
+    = render 'groups/settings/ci_cd/auto_devops_form', group: @group
diff --git a/app/views/projects/settings/ci_cd/_autodevops_form.html.haml b/app/views/projects/settings/ci_cd/_autodevops_form.html.haml
index 8c4d1c32ebe..fac68a36e79 100644
--- a/app/views/projects/settings/ci_cd/_autodevops_form.html.haml
+++ b/app/views/projects/settings/ci_cd/_autodevops_form.html.haml
@@ -8,15 +8,15 @@
             .card.auto-devops-card
               .card-body
                 .form-check
-                  = form.check_box :enabled, class: 'form-check-input js-toggle-extra-settings', checked: @project.auto_devops_enabled?
+                  = form.check_box :enabled, class: 'form-check-input js-toggle-extra-settings', checked: auto_devops_enabled
                   = form.label :enabled, class: 'form-check-label' do
                     %strong= s_('CICD|Default to Auto DevOps pipeline')
-                    - if @project.has_auto_devops_implicitly_enabled?
-                      %span.badge.badge-info.js-instance-default-badge= s_('CICD|instance enabled')
+                    - if auto_devops_enabled
+                      %span.badge.badge-info.js-instance-default-badge= badge_for_auto_devops_scope(@project)
                   .form-text.text-muted
                     = s_('CICD|The Auto DevOps pipeline will run if no alternative CI configuration file is found.')
                     = link_to _('More information'), help_page_path('topics/autodevops/index.md'), target: '_blank'
-              .card-footer.js-extra-settings{ class: @project.auto_devops_enabled? || 'hidden' }
+              .card-footer.js-extra-settings{ class: auto_devops_enabled || 'hidden' }
                 %p.settings-message.text-center
                   - kubernetes_cluster_link = help_page_path('user/project/clusters/index')
                   - kubernetes_cluster_start = '<a href="%{url}" target="_blank" rel="noopener noreferrer">'.html_safe % { url: kubernetes_cluster_link }
diff --git a/app/views/projects/settings/ci_cd/show.html.haml b/app/views/projects/settings/ci_cd/show.html.haml
index 6966bf96724..548b7c06867 100644
--- a/app/views/projects/settings/ci_cd/show.html.haml
+++ b/app/views/projects/settings/ci_cd/show.html.haml
@@ -26,7 +26,7 @@
       = s_('CICD|Auto DevOps will automatically build, test, and deploy your application based on a predefined Continuous Integration and Delivery configuration.')
       = link_to s_('CICD|Learn more about Auto DevOps'), help_page_path('topics/autodevops/index.md')
   .settings-content
-    = render 'autodevops_form'
+    = render 'autodevops_form', auto_devops_enabled: @project.auto_devops_enabled?
 
 = render_if_exists 'projects/settings/ci_cd/protected_environments', expanded: expanded
 
diff --git a/changelogs/unreleased/52447-auto-devops-at-group-level.yml b/changelogs/unreleased/52447-auto-devops-at-group-level.yml
new file mode 100644
index 00000000000..0a21c6a2b7b
--- /dev/null
+++ b/changelogs/unreleased/52447-auto-devops-at-group-level.yml
@@ -0,0 +1,5 @@
+---
+title: Enable/disable Auto DevOps at the Group level
+merge_request: 25533
+author:
+type: added
diff --git a/config/routes/group.rb b/config/routes/group.rb
index b3015529c6e..f42c1ee6e7d 100644
--- a/config/routes/group.rb
+++ b/config/routes/group.rb
@@ -31,6 +31,7 @@ constraints(::Constraints::GroupUrlConstrainer.new) do
     namespace :settings do
       resource :ci_cd, only: [:show], controller: 'ci_cd' do
         put :reset_registration_token
+        patch :update_auto_devops
       end
     end
 
diff --git a/db/migrate/20190225152525_add_auto_dev_ops_enabled_to_namespaces.rb b/db/migrate/20190225152525_add_auto_dev_ops_enabled_to_namespaces.rb
new file mode 100644
index 00000000000..93e7a84fb02
--- /dev/null
+++ b/db/migrate/20190225152525_add_auto_dev_ops_enabled_to_namespaces.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class AddAutoDevOpsEnabledToNamespaces < ActiveRecord::Migration[5.0]
+  DOWNTIME = false
+
+  def change
+    add_column :namespaces, :auto_devops_enabled, :boolean
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 59a76e21a5f..dda0445e3f2 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -1377,6 +1377,7 @@ ActiveRecord::Schema.define(version: 20190301182457) do
     t.integer "cached_markdown_version"
     t.string "runners_token"
     t.string "runners_token_encrypted"
+    t.boolean "auto_devops_enabled"
     t.index ["created_at"], name: "index_namespaces_on_created_at", using: :btree
     t.index ["name", "parent_id"], name: "index_namespaces_on_name_and_parent_id", unique: true, using: :btree
     t.index ["name"], name: "index_namespaces_on_name_trigram", using: :gin, opclasses: {"name"=>"gin_trgm_ops"}
diff --git a/locale/gitlab.pot b/locale/gitlab.pot
index 4751b7264a5..90dab37a33b 100644
--- a/locale/gitlab.pot
+++ b/locale/gitlab.pot
@@ -1332,6 +1332,9 @@ msgstr ""
 msgid "CICD|You must add a %{kubernetes_cluster_start}Kubernetes cluster integration%{kubernetes_cluster_end} to this project with a domain in order for your deployment strategy to work correctly."
 msgstr ""
 
+msgid "CICD|group enabled"
+msgstr ""
+
 msgid "CICD|instance enabled"
 msgstr ""
 
@@ -3828,18 +3831,33 @@ msgstr ""
 msgid "Group: %{group_name}"
 msgstr ""
 
+msgid "GroupSettings|Auto DevOps pipeline was updated for the group"
+msgstr ""
+
+msgid "GroupSettings|Auto DevOps will automatically build, test and deploy your application based on a predefined Continuous Integration and Delivery configuration. %{auto_devops_start}Learn more about Auto DevOps%{auto_devops_end}"
+msgstr ""
+
 msgid "GroupSettings|Badges"
 msgstr ""
 
 msgid "GroupSettings|Customize your group badges."
 msgstr ""
 
+msgid "GroupSettings|Default to Auto DevOps pipeline for all projects within this group"
+msgstr ""
+
 msgid "GroupSettings|Learn more about badges."
 msgstr ""
 
 msgid "GroupSettings|Prevent sharing a project within %{group} with other groups"
 msgstr ""
 
+msgid "GroupSettings|The Auto DevOps pipeline will run if no alternative CI configuration file is found."
+msgstr ""
+
+msgid "GroupSettings|There was a problem updating Auto DevOps pipeline: %{error_messages}."
+msgstr ""
+
 msgid "GroupSettings|This setting is applied on %{ancestor_group} and has been overridden on this subgroup."
 msgstr ""
 
diff --git a/spec/controllers/groups/settings/ci_cd_controller_spec.rb b/spec/controllers/groups/settings/ci_cd_controller_spec.rb
index 40673d10b91..15eb0a442a6 100644
--- a/spec/controllers/groups/settings/ci_cd_controller_spec.rb
+++ b/spec/controllers/groups/settings/ci_cd_controller_spec.rb
@@ -66,4 +66,77 @@ describe Groups::Settings::CiCdController do
       end
     end
   end
+
+  describe 'PATCH #update_auto_devops' do
+    let(:auto_devops_param) { '1' }
+
+    subject do
+      patch :update_auto_devops, params: {
+        group_id: group,
+        group: { auto_devops_enabled: auto_devops_param }
+      }
+    end
+
+    context 'when user does not have enough permission' do
+      before do
+        group.add_maintainer(user)
+      end
+
+      it { is_expected.to have_gitlab_http_status(404) }
+    end
+
+    context 'when user has enough privileges' do
+      before do
+        group.add_owner(user)
+      end
+
+      it { is_expected.to redirect_to(group_settings_ci_cd_path) }
+
+      context 'when service execution went wrong' do
+        before do
+          allow_any_instance_of(Groups::AutoDevopsService).to receive(:execute).and_return(false)
+          allow_any_instance_of(Group).to receive_message_chain(:errors, :full_messages)
+            .and_return(['Error 1'])
+
+          subject
+        end
+
+        it 'returns a flash alert' do
+          expect(response).to set_flash[:alert]
+            .to eq("There was a problem updating Auto DevOps pipeline: [\"Error 1\"].")
+        end
+      end
+
+      context 'when service execution was successful' do
+        it 'returns a flash notice' do
+          subject
+
+          expect(response).to set_flash[:notice]
+            .to eq('Auto DevOps pipeline was updated for the group')
+        end
+      end
+
+      context 'when changing auto devops value' do
+        before do
+          subject
+
+          group.reload
+        end
+
+        context 'when explicitly enabling auto devops' do
+          it 'should update group attribute' do
+            expect(group.auto_devops_enabled).to eq(true)
+          end
+        end
+
+        context 'when explicitly disabling auto devops' do
+          let(:auto_devops_param) { '0' }
+
+          it 'should update group attribute' do
+            expect(group.auto_devops_enabled).to eq(false)
+          end
+        end
+      end
+    end
+  end
 end
diff --git a/spec/factories/groups.rb b/spec/factories/groups.rb
index 3b354c0d96b..dcef8571f41 100644
--- a/spec/factories/groups.rb
+++ b/spec/factories/groups.rb
@@ -36,5 +36,13 @@ FactoryBot.define do
     trait :nested do
       parent factory: :group
     end
+
+    trait :auto_devops_enabled do
+      auto_devops_enabled true
+    end
+
+    trait :auto_devops_disabled do
+      auto_devops_enabled false
+    end
   end
 end
diff --git a/spec/factories/projects.rb b/spec/factories/projects.rb
index 30d3b22d868..ab185ab3972 100644
--- a/spec/factories/projects.rb
+++ b/spec/factories/projects.rb
@@ -271,6 +271,10 @@ FactoryBot.define do
     trait :auto_devops do
       association :auto_devops, factory: :project_auto_devops
     end
+
+    trait :auto_devops_disabled do
+      association :auto_devops, factory: [:project_auto_devops, :disabled]
+    end
   end
 
   # Project with empty repository
diff --git a/spec/features/groups/settings/ci_cd_spec.rb b/spec/features/groups/settings/ci_cd_spec.rb
index d422fd18346..0f793dbab6e 100644
--- a/spec/features/groups/settings/ci_cd_spec.rb
+++ b/spec/features/groups/settings/ci_cd_spec.rb
@@ -5,8 +5,8 @@ require 'spec_helper'
 describe 'Group CI/CD settings' do
   include WaitForRequests
 
-  let(:user) {create(:user)}
-  let(:group) {create(:group)}
+  let(:user) { create(:user) }
+  let(:group) { create(:group) }
 
   before do
     group.add_owner(user)
@@ -36,4 +36,45 @@ describe 'Group CI/CD settings' do
       end
     end
   end
+
+  describe 'Auto DevOps form' do
+    before do
+      stub_application_setting(auto_devops_enabled: true)
+    end
+
+    context 'as owner first visiting group settings' do
+      it 'should see instance enabled badge' do
+        visit group_settings_ci_cd_path(group)
+
+        page.within '#auto-devops-settings' do
+          expect(page).to have_content('instance enabled')
+        end
+      end
+    end
+
+    context 'when Auto DevOps group has been enabled' do
+      it 'should see group enabled badge' do
+        group.update!(auto_devops_enabled: true)
+
+        visit group_settings_ci_cd_path(group)
+
+        page.within '#auto-devops-settings' do
+          expect(page).to have_content('group enabled')
+        end
+      end
+    end
+
+    context 'when Auto DevOps group has been disabled' do
+      it 'should not see a badge' do
+        group.update!(auto_devops_enabled: false)
+
+        visit group_settings_ci_cd_path(group)
+
+        page.within '#auto-devops-settings' do
+          expect(page).not_to have_content('instance enabled')
+          expect(page).not_to have_content('group enabled')
+        end
+      end
+    end
+  end
 end
diff --git a/spec/features/projects/settings/pipelines_settings_spec.rb b/spec/features/projects/settings/pipelines_settings_spec.rb
index 4c85abe9971..bf0c0de89b2 100644
--- a/spec/features/projects/settings/pipelines_settings_spec.rb
+++ b/spec/features/projects/settings/pipelines_settings_spec.rb
@@ -110,6 +110,37 @@ describe "Projects > Settings > Pipelines settings" do
             expect(page).not_to have_content('instance enabled')
           end
         end
+
+        context 'when auto devops is turned on group level' do
+          before do
+            project.update!(namespace: create(:group, :auto_devops_enabled))
+          end
+
+          it 'renders group enabled badge' do
+            visit project_settings_ci_cd_path(project)
+
+            page.within '#autodevops-settings' do
+              expect(page).to have_content('group enabled')
+              expect(find_field('project_auto_devops_attributes_enabled')).to be_checked
+            end
+          end
+        end
+
+        context 'when auto devops is turned on group parent level', :nested_groups do
+          before do
+            group = create(:group, parent: create(:group, :auto_devops_enabled))
+            project.update!(namespace: group)
+          end
+
+          it 'renders group enabled badge' do
+            visit project_settings_ci_cd_path(project)
+
+            page.within '#autodevops-settings' do
+              expect(page).to have_content('group enabled')
+              expect(find_field('project_auto_devops_attributes_enabled')).to be_checked
+            end
+          end
+        end
       end
     end
 
diff --git a/spec/helpers/auto_devops_helper_spec.rb b/spec/helpers/auto_devops_helper_spec.rb
index 223e562238d..d2540696b17 100644
--- a/spec/helpers/auto_devops_helper_spec.rb
+++ b/spec/helpers/auto_devops_helper_spec.rb
@@ -29,11 +29,11 @@ describe AutoDevopsHelper do
     end
 
     context 'when the banner is disabled by feature flag' do
-      it 'allows the feature flag to disable' do
+      before do
         Feature.get(:auto_devops_banner_disabled).enable
-
-        expect(subject).to be(false)
       end
+
+      it { is_expected.to be_falsy }
     end
 
     context 'when dismissed' do
@@ -90,4 +90,136 @@ describe AutoDevopsHelper do
       it { is_expected.to eq(false) }
     end
   end
+
+  describe '#badge_for_auto_devops_scope' do
+    subject { helper.badge_for_auto_devops_scope(receiver) }
+
+    context 'when receiver is a group' do
+      context 'when explicitly enabled' do
+        let(:receiver) { create(:group, :auto_devops_enabled) }
+
+        it { is_expected.to eq('group enabled') }
+      end
+
+      context 'when explicitly disabled' do
+        let(:receiver) { create(:group, :auto_devops_disabled) }
+
+        it { is_expected.to be_nil }
+      end
+
+      context 'when auto devops is implicitly enabled' do
+        let(:receiver) { create(:group) }
+
+        context 'by instance' do
+          before do
+            stub_application_setting(auto_devops_enabled: true)
+          end
+
+          it { is_expected.to eq('instance enabled') }
+        end
+
+        context 'with groups', :nested_groups do
+          before do
+            receiver.update(parent: parent)
+          end
+
+          context 'when auto devops is enabled on parent' do
+            let(:parent) { create(:group, :auto_devops_enabled) }
+
+            it { is_expected.to eq('group enabled') }
+          end
+
+          context 'when auto devops is enabled on parent group' do
+            let(:root_parent) { create(:group, :auto_devops_enabled) }
+            let(:parent) { create(:group, parent: root_parent) }
+
+            it { is_expected.to eq('group enabled') }
+          end
+
+          context 'when auto devops disabled set on parent group' do
+            let(:root_parent) { create(:group, :auto_devops_disabled) }
+            let(:parent) { create(:group, parent: root_parent) }
+
+            it { is_expected.to be_nil }
+          end
+        end
+      end
+    end
+
+    context 'when receiver is a project' do
+      context 'when auto devops is enabled at project level' do
+        let(:receiver) { create(:project, :auto_devops) }
+
+        it { is_expected.to be_nil }
+      end
+
+      context 'when auto devops is disabled at project level' do
+        let(:receiver) { create(:project, :auto_devops_disabled) }
+
+        it { is_expected.to be_nil }
+      end
+
+      context 'when auto devops is implicitly enabled' do
+        let(:receiver) { create(:project) }
+
+        context 'by instance' do
+          before do
+            stub_application_setting(auto_devops_enabled: true)
+          end
+
+          it { is_expected.to eq('instance enabled') }
+        end
+
+        context 'with groups', :nested_groups do
+          let(:receiver) { create(:project, :repository, namespace: group) }
+
+          before do
+            stub_application_setting(auto_devops_enabled: false)
+          end
+
+          context 'when auto devops is enabled on group level' do
+            let(:group) { create(:group, :auto_devops_enabled) }
+
+            it { is_expected.to eq('group enabled') }
+          end
+
+          context 'when auto devops is enabled on root group' do
+            let(:root_parent) { create(:group, :auto_devops_enabled) }
+            let(:group) { create(:group, parent: root_parent) }
+
+            it { is_expected.to eq('group enabled') }
+          end
+        end
+      end
+
+      context 'when auto devops is implicitly disabled' do
+        let(:receiver) { create(:project) }
+
+        context 'by instance' do
+          before do
+            stub_application_setting(auto_devops_enabled: false)
+          end
+
+          it { is_expected.to be_nil }
+        end
+
+        context 'with groups', :nested_groups do
+          let(:receiver) { create(:project, :repository, namespace: group) }
+
+          context 'when auto devops is disabled on group level' do
+            let(:group) { create(:group, :auto_devops_disabled) }
+
+            it { is_expected.to be_nil }
+          end
+
+          context 'when root group is enabled and parent disabled' do
+            let(:root_parent) { create(:group, :auto_devops_enabled) }
+            let(:group) { create(:group, :auto_devops_disabled, parent: root_parent) }
+
+            it { is_expected.to be_nil }
+          end
+        end
+      end
+    end
+  end
 end
diff --git a/spec/models/group_spec.rb b/spec/models/group_spec.rb
index 9dc32a815d8..16624ce47d0 100644
--- a/spec/models/group_spec.rb
+++ b/spec/models/group_spec.rb
@@ -810,4 +810,125 @@ describe Group do
       it { is_expected.to be_truthy }
     end
   end
+
+  describe '#first_auto_devops_config' do
+    using RSpec::Parameterized::TableSyntax
+
+    let(:group) { create(:group) }
+
+    subject { group.first_auto_devops_config }
+
+    where(:instance_value, :group_value, :config) do
+      # Instance level enabled
+      true | nil    | { status: true, scope: :instance }
+      true | true   | { status: true, scope: :group }
+      true | false  | { status: false, scope: :group }
+
+      # Instance level disabled
+      false | nil    | { status: false, scope: :instance }
+      false | true   | { status: true, scope: :group }
+      false | false  | { status: false, scope: :group }
+    end
+
+    with_them do
+      before do
+        stub_application_setting(auto_devops_enabled: instance_value)
+
+        group.update_attribute(:auto_devops_enabled, group_value)
+      end
+
+      it { is_expected.to eq(config) }
+    end
+
+    context 'with parent groups', :nested_groups do
+      where(:instance_value, :parent_value, :group_value, :config) do
+        # Instance level enabled
+        true | nil   | nil    | { status: true, scope: :instance }
+        true | nil   | true   | { status: true, scope: :group }
+        true | nil   | false  | { status: false, scope: :group }
+
+        true | true  | nil    | { status: true, scope: :group }
+        true | true  | true   | { status: true, scope: :group }
+        true | true  | false  | { status: false, scope: :group }
+
+        true | false | nil    | { status: false, scope: :group }
+        true | false | true   | { status: true, scope: :group }
+        true | false | false  | { status: false, scope: :group }
+
+        # Instance level disable
+        false | nil  | nil    | { status: false, scope: :instance }
+        false | nil  | true   | { status: true, scope: :group }
+        false | nil  | false  | { status: false, scope: :group }
+
+        false | true | nil    | { status: true, scope: :group }
+        false | true | true   | { status: true, scope: :group }
+        false | true | false  | { status: false, scope: :group }
+
+        false | false | nil   | { status: false, scope: :group }
+        false | false | true  | { status: true, scope: :group }
+        false | false | false | { status: false, scope: :group }
+      end
+
+      with_them do
+        before do
+          stub_application_setting(auto_devops_enabled: instance_value)
+          parent = create(:group, auto_devops_enabled: parent_value)
+
+          group.update!(
+            auto_devops_enabled: group_value,
+            parent: parent
+          )
+        end
+
+        it { is_expected.to eq(config) }
+      end
+    end
+  end
+
+  describe '#auto_devops_enabled?' do
+    subject { group.auto_devops_enabled? }
+
+    context 'when auto devops is explicitly enabled on group' do
+      let(:group) { create(:group, :auto_devops_enabled) }
+
+      it { is_expected.to be_truthy }
+    end
+
+    context 'when auto devops is explicitly disabled on group' do
+      let(:group) { create(:group, :auto_devops_disabled) }
+
+      it { is_expected.to be_falsy }
+    end
+
+    context 'when auto devops is implicitly enabled or disabled' do
+      before do
+        stub_application_setting(auto_devops_enabled: false)
+
+        group.update!(parent: parent_group)
+      end
+
+      context 'when auto devops is enabled on root group' do
+        let(:root_group) { create(:group, :auto_devops_enabled) }
+        let(:subgroup) { create(:group, parent: root_group) }
+        let(:parent_group) { create(:group, parent: subgroup) }
+
+        it { is_expected.to be_truthy }
+      end
+
+      context 'when auto devops is disabled on root group' do
+        let(:root_group) { create(:group, :auto_devops_disabled) }
+        let(:subgroup) { create(:group, parent: root_group) }
+        let(:parent_group) { create(:group, parent: subgroup) }
+
+        it { is_expected.to be_falsy }
+      end
+
+      context 'when auto devops is disabled on parent group and enabled on root group' do
+        let(:root_group) { create(:group, :auto_devops_enabled) }
+        let(:parent_group) { create(:group, :auto_devops_disabled, parent: root_group) }
+
+        it { is_expected.to be_falsy }
+      end
+    end
+  end
 end
diff --git a/spec/models/namespace_spec.rb b/spec/models/namespace_spec.rb
index 475fbe56e4d..aadc298ae0b 100644
--- a/spec/models/namespace_spec.rb
+++ b/spec/models/namespace_spec.rb
@@ -775,4 +775,28 @@ describe Namespace do
       end
     end
   end
+
+  describe '#auto_devops_enabled' do
+    context 'with users' do
+      let(:user) { create(:user) }
+
+      subject { user.namespace.auto_devops_enabled? }
+
+      before do
+        user.namespace.update!(auto_devops_enabled: auto_devops_enabled)
+      end
+
+      context 'when auto devops is explicitly enabled' do
+        let(:auto_devops_enabled) { true }
+
+        it { is_expected.to eq(true) }
+      end
+
+      context 'when auto devops is explicitly disabled' do
+        let(:auto_devops_enabled) { false }
+
+        it { is_expected.to eq(false) }
+      end
+    end
+  end
 end
diff --git a/spec/models/project_spec.rb b/spec/models/project_spec.rb
index 71bd7972436..5c09faafd83 100644
--- a/spec/models/project_spec.rb
+++ b/spec/models/project_spec.rb
@@ -3631,12 +3631,36 @@ describe Project do
 
     subject { project.auto_devops_enabled? }
 
+    context 'when explicitly enabled' do
+      before do
+        create(:project_auto_devops, project: project)
+      end
+
+      it { is_expected.to be_truthy }
+    end
+
+    context 'when explicitly disabled' do
+      before do
+        create(:project_auto_devops, project: project, enabled: false)
+      end
+
+      it { is_expected.to be_falsey }
+    end
+
     context 'when enabled in settings' do
       before do
         stub_application_setting(auto_devops_enabled: true)
       end
 
       it { is_expected.to be_truthy }
+    end
+
+    context 'when disabled in settings' do
+      before do
+        stub_application_setting(auto_devops_enabled: false)
+      end
+
+      it { is_expected.to be_falsey }
 
       context 'when explicitly enabled' do
         before do
@@ -3648,34 +3672,91 @@ describe Project do
 
       context 'when explicitly disabled' do
         before do
-          create(:project_auto_devops, project: project, enabled: false)
+          create(:project_auto_devops, :disabled, project: project)
         end
 
         it { is_expected.to be_falsey }
       end
     end
 
-    context 'when disabled in settings' do
+    context 'when force_autodevops_on_by_default is enabled for the project' do
+      it { is_expected.to be_truthy }
+    end
+
+    context 'with group parents' do
+      let(:instance_enabled) { true }
+
       before do
-        stub_application_setting(auto_devops_enabled: false)
+        stub_application_setting(auto_devops_enabled: instance_enabled)
+        project.update!(namespace: parent_group)
       end
 
-      it { is_expected.to be_falsey }
+      context 'when enabled on parent' do
+        let(:parent_group) { create(:group, :auto_devops_enabled) }
 
-      context 'when explicitly enabled' do
-        before do
-          create(:project_auto_devops, project: project)
+        context 'when auto devops instance enabled' do
+          it { is_expected.to be_truthy }
         end
 
-        it { is_expected.to be_truthy }
+        context 'when auto devops instance disabled' do
+          let(:instance_disabled) { false }
+
+          it { is_expected.to be_truthy }
+        end
       end
 
-      context 'when force_autodevops_on_by_default is enabled for the project' do
-        before do
-          Feature.get(:force_autodevops_on_by_default).enable_percentage_of_actors(100)
+      context 'when disabled on parent' do
+        let(:parent_group) { create(:group, :auto_devops_disabled) }
+
+        context 'when auto devops instance enabled' do
+          it { is_expected.to be_falsy }
         end
 
-        it { is_expected.to be_truthy }
+        context 'when auto devops instance disabled' do
+          let(:instance_disabled) { false }
+
+          it { is_expected.to be_falsy }
+        end
+      end
+
+      context 'when enabled on root parent', :nested_groups do
+        let(:parent_group) { create(:group, parent: create(:group, :auto_devops_enabled)) }
+
+        context 'when auto devops instance enabled' do
+          it { is_expected.to be_truthy }
+        end
+
+        context 'when auto devops instance disabled' do
+          let(:instance_disabled) { false }
+
+          it { is_expected.to be_truthy }
+        end
+
+        context 'when explicitly disabled on parent' do
+          let(:parent_group) { create(:group, :auto_devops_disabled, parent: create(:group, :auto_devops_enabled)) }
+
+          it { is_expected.to be_falsy }
+        end
+      end
+
+      context 'when disabled on root parent', :nested_groups do
+        let(:parent_group) { create(:group, parent: create(:group, :auto_devops_disabled)) }
+
+        context 'when auto devops instance enabled' do
+          it { is_expected.to be_falsy }
+        end
+
+        context 'when auto devops instance disabled' do
+          let(:instance_disabled) { false }
+
+          it { is_expected.to be_falsy }
+        end
+
+        context 'when explicitly disabled on parent' do
+          let(:parent_group) { create(:group, :auto_devops_disabled, parent: create(:group, :auto_devops_enabled)) }
+
+          it { is_expected.to be_falsy }
+        end
       end
     end
   end
@@ -3722,15 +3803,52 @@ describe Project do
         end
       end
     end
+
+    context 'when enabled on group' do
+      it 'has auto devops implicitly enabled' do
+        project.update(namespace: create(:group, :auto_devops_enabled))
+
+        expect(project).to have_auto_devops_implicitly_enabled
+      end
+    end
+
+    context 'when enabled on parent group' do
+      it 'has auto devops implicitly enabled' do
+        subgroup = create(:group, parent: create(:group, :auto_devops_enabled))
+        project.update(namespace: subgroup)
+
+        expect(project).to have_auto_devops_implicitly_enabled
+      end
+    end
   end
 
   describe '#has_auto_devops_implicitly_disabled?' do
+    set(:project) { create(:project) }
+
     before do
       allow(Feature).to receive(:enabled?).and_call_original
       Feature.get(:force_autodevops_on_by_default).enable_percentage_of_actors(0)
     end
 
-    set(:project) { create(:project) }
+    context 'when explicitly disabled' do
+      before do
+        create(:project_auto_devops, project: project, enabled: false)
+      end
+
+      it 'does not have auto devops implicitly disabled' do
+        expect(project).not_to have_auto_devops_implicitly_disabled
+      end
+    end
+
+    context 'when explicitly enabled' do
+      before do
+        create(:project_auto_devops, project: project, enabled: true)
+      end
+
+      it 'does not have auto devops implicitly disabled' do
+        expect(project).not_to have_auto_devops_implicitly_disabled
+      end
+    end
 
     context 'when enabled in settings' do
       before do
@@ -3753,6 +3871,8 @@ describe Project do
 
       context 'when force_autodevops_on_by_default is enabled for the project' do
         before do
+          create(:project_auto_devops, project: project, enabled: false)
+
           Feature.get(:force_autodevops_on_by_default).enable_percentage_of_actors(100)
         end
 
@@ -3761,23 +3881,20 @@ describe Project do
         end
       end
 
-      context 'when explicitly disabled' do
-        before do
-          create(:project_auto_devops, project: project, enabled: false)
-        end
+      context 'when disabled on group' do
+        it 'has auto devops implicitly disabled' do
+          project.update!(namespace: create(:group, :auto_devops_disabled))
 
-        it 'does not have auto devops implicitly disabled' do
-          expect(project).not_to have_auto_devops_implicitly_disabled
+          expect(project).to have_auto_devops_implicitly_disabled
         end
       end
 
-      context 'when explicitly enabled' do
-        before do
-          create(:project_auto_devops, project: project, enabled: true)
-        end
+      context 'when disabled on parent group' do
+        it 'has auto devops implicitly disabled' do
+          subgroup = create(:group, parent: create(:group, :auto_devops_disabled))
+          project.update!(namespace: subgroup)
 
-        it 'does not have auto devops implicitly disabled' do
-          expect(project).not_to have_auto_devops_implicitly_disabled
+          expect(project).to have_auto_devops_implicitly_disabled
         end
       end
     end
diff --git a/spec/services/groups/auto_devops_service_spec.rb b/spec/services/groups/auto_devops_service_spec.rb
new file mode 100644
index 00000000000..7f8ab517cef
--- /dev/null
+++ b/spec/services/groups/auto_devops_service_spec.rb
@@ -0,0 +1,62 @@
+# frozen_string_literal: true
+require 'spec_helper'
+
+describe Groups::AutoDevopsService, '#execute' do
+  set(:group) { create(:group) }
+  set(:user) { create(:user) }
+  let(:group_params) { { auto_devops_enabled: '0' } }
+  let(:service) { described_class.new(group, user, group_params) }
+
+  context 'when user does not have enough privileges' do
+    it 'raises exception' do
+      group.add_developer(user)
+
+      expect do
+        service.execute
+      end.to raise_exception(Gitlab::Access::AccessDeniedError)
+    end
+  end
+
+  context 'when user has enough privileges' do
+    before do
+      group.add_owner(user)
+    end
+
+    it 'updates group auto devops enabled accordingly' do
+      service.execute
+
+      expect(group.auto_devops_enabled).to eq(false)
+    end
+
+    context 'when group has projects' do
+      it 'reflects changes on projects' do
+        project_1 = create(:project, namespace: group)
+
+        service.execute
+
+        expect(project_1).not_to have_auto_devops_implicitly_enabled
+      end
+    end
+
+    context 'when group has subgroups' do
+      it 'reflects changes on subgroups' do
+        subgroup_1 = create(:group, parent: group)
+
+        service.execute
+
+        expect(subgroup_1.auto_devops_enabled?).to eq(false)
+      end
+
+      context 'when subgroups have projects', :nested_groups do
+        it 'reflects changes on projects' do
+          subgroup_1 = create(:group, parent: group)
+          project_1 = create(:project, namespace: subgroup_1)
+
+          service.execute
+
+          expect(project_1).not_to have_auto_devops_implicitly_enabled
+        end
+      end
+    end
+  end
+end
diff --git a/spec/views/projects/settings/ci_cd/_autodevops_form.html.haml_spec.rb b/spec/views/projects/settings/ci_cd/_autodevops_form.html.haml_spec.rb
index 2a2539c80b5..b52fc719a64 100644
--- a/spec/views/projects/settings/ci_cd/_autodevops_form.html.haml_spec.rb
+++ b/spec/views/projects/settings/ci_cd/_autodevops_form.html.haml_spec.rb
@@ -5,6 +5,7 @@ describe 'projects/settings/ci_cd/_autodevops_form' do
 
   before do
     assign :project, project
+    allow(view).to receive(:auto_devops_enabled) { true }
   end
 
   it 'shows a warning message about Kubernetes cluster' do