From 5eeb39104356356bec81abe19479bca591e6f299 Mon Sep 17 00:00:00 2001
From: GitLab Bot <gitlab-bot@gitlab.com>
Date: Tue, 23 Jun 2020 15:08:41 +0000
Subject: [PATCH] Add latest changes from gitlab-org/gitlab@master

---
 .gitlab/ci/frontend.gitlab-ci.yml             |   3 +
 .gitlab/ci/rails.gitlab-ci.yml                |   2 +
 Gemfile                                       |   1 +
 Gemfile.lock                                  |   3 +
 .../components/sidebar/sidebar_assignees.vue  |  15 +-
 app/assets/stylesheets/framework/buttons.scss |  21 ++-
 app/assets/stylesheets/framework/common.scss  |   1 -
 .../pages/profiles/preferences.scss           |   5 -
 .../concerns/membership_actions.rb            |   5 +-
 .../resource_milestone_event_finder.rb        |  71 ++++-----
 app/helpers/members_helper.rb                 |   8 +
 app/models/issue_assignee.rb                  |   5 +-
 app/models/merge_request_assignee.rb          |   4 +-
 app/models/snippet.rb                         |   1 +
 app/models/snippet_statistics.rb              |  28 ++++
 app/models/user.rb                            |   5 +-
 .../alert_management/alerts/update_service.rb |  27 ++--
 app/services/members/destroy_service.rb       |  13 +-
 .../members/unassign_issuables_service.rb     |  23 +++
 app/views/profiles/preferences/show.html.haml |  11 +-
 app/views/shared/members/_member.html.haml    |   2 +-
 app/workers/all_queues.yml                    |   8 +
 .../unassign_issuables_worker.rb              |  32 ++++
 ...-image-on-auto-browser-performance-tes.yml |   5 +
 .../unreleased/32942-add-dart-ci-template.yml |   5 +
 .../36720-unassig-user-on-remove-option.yml   |   5 +
 .../dz-scope-project-snippet-routes.yml       |   5 +
 ...tion-for-resource-milestone-events-api.yml |   5 +
 ...-add-count-logic-to-snippet-statistics.yml |   5 +
 .../unreleased/limit-alert-assignees.yml      |   5 +
 .../nfriend-fix-theme-alignment.yml           |   5 +
 config/karma.config.js                        |   2 +-
 config/routes/project.rb                      |  13 ++
 config/sidekiq_queues.yml                     |   2 +
 doc/api/members.md                            |   1 +
 doc/api/resource_weight_events.md             | 108 ++++++++++++++
 .../database/database_reviewer_guidelines.md  |  95 ++++++++++++
 doc/development/database/index.md             |   8 +
 doc/install/aws/index.md                      |   2 +-
 doc/user/infrastructure/index.md              |   7 +
 doc/user/project/clusters/serverless/index.md |   2 +-
 lib/api/members.rb                            |   4 +-
 lib/api/resource_milestone_events.rb          |   3 +-
 lib/gitlab/ci/templates/Dart.gitlab-ci.yml    |  22 +++
 .../Browser-Performance-Testing.gitlab-ci.yml |   6 +-
 locale/gitlab.pot                             |   6 +
 package.json                                  |   2 +-
 scripts/frontend/merge_coverage_frontend.js   |   2 +-
 scripts/merge-simplecov                       |   1 +
 .../resource_milestone_event_finder_spec.rb   |  16 +-
 .../alert_managment_sidebar_assignees_spec.js |  22 ++-
 spec/models/issue_assignee_spec.rb            |  35 ++++-
 spec/models/merge_request_assignee_spec.rb    |  22 +++
 spec/models/snippet_spec.rb                   |  11 ++
 spec/models/snippet_statistics_spec.rb        |  81 ++++++++++
 spec/routing/project_routing_spec.rb          |   4 +
 .../alerts/update_service_spec.rb             | 139 ++++++++++--------
 spec/services/members/destroy_service_spec.rb |  29 +++-
 .../unassign_issuables_service_spec.rb        |  66 +++++++++
 spec/simplecov_env.rb                         |  10 ++
 ...ce_milestone_events_api_shared_examples.rb |  37 +++++
 .../unassign_issuables_worker_spec.rb         |  27 ++++
 yarn.lock                                     |   8 +-
 63 files changed, 947 insertions(+), 180 deletions(-)
 create mode 100644 app/services/members/unassign_issuables_service.rb
 create mode 100644 app/workers/members_destroyer/unassign_issuables_worker.rb
 create mode 100644 changelogs/unreleased/221189-suppress-progress-on-pulling-image-on-auto-browser-performance-tes.yml
 create mode 100644 changelogs/unreleased/32942-add-dart-ci-template.yml
 create mode 100644 changelogs/unreleased/36720-unassig-user-on-remove-option.yml
 create mode 100644 changelogs/unreleased/dz-scope-project-snippet-routes.yml
 create mode 100644 changelogs/unreleased/fix-pagination-for-resource-milestone-events-api.yml
 create mode 100644 changelogs/unreleased/fj-223700-add-count-logic-to-snippet-statistics.yml
 create mode 100644 changelogs/unreleased/limit-alert-assignees.yml
 create mode 100644 changelogs/unreleased/nfriend-fix-theme-alignment.yml
 create mode 100644 doc/api/resource_weight_events.md
 create mode 100644 doc/development/database/database_reviewer_guidelines.md
 create mode 100644 lib/gitlab/ci/templates/Dart.gitlab-ci.yml
 create mode 100644 spec/services/members/unassign_issuables_service_spec.rb
 create mode 100644 spec/workers/members_destroyer/unassign_issuables_worker_spec.rb

diff --git a/.gitlab/ci/frontend.gitlab-ci.yml b/.gitlab/ci/frontend.gitlab-ci.yml
index 62123ea07ff..72ef88cfeee 100644
--- a/.gitlab/ci/frontend.gitlab-ci.yml
+++ b/.gitlab/ci/frontend.gitlab-ci.yml
@@ -159,6 +159,7 @@ karma:
       - tmp/tests/frontend/
     reports:
       junit: junit_karma.xml
+      cobertura: coverage-javascript/cobertura-coverage.xml
 
 karma-as-if-foss:
   extends:
@@ -226,6 +227,8 @@ coverage-frontend:
     expire_in: 31d
     paths:
       - coverage-frontend/
+    reports:
+      cobertura: coverage-frontend/cobertura-coverage.xml
 
 .qa-frontend-node:
   extends:
diff --git a/.gitlab/ci/rails.gitlab-ci.yml b/.gitlab/ci/rails.gitlab-ci.yml
index 535cbce0bba..657501337c4 100644
--- a/.gitlab/ci/rails.gitlab-ci.yml
+++ b/.gitlab/ci/rails.gitlab-ci.yml
@@ -256,6 +256,8 @@ rspec:coverage:
       - coverage/index.html
       - coverage/assets/
       - tmp/memory_test/
+    reports:
+      cobertura: coverage/coverage.xml
 # EE/FOSS: default refs (MRs, master, schedules) jobs #
 #######################################################
 
diff --git a/Gemfile b/Gemfile
index 2e03d8ebcb0..5a6c0e13503 100644
--- a/Gemfile
+++ b/Gemfile
@@ -371,6 +371,7 @@ group :development, :test do
   gem 'scss_lint', '~> 0.56.0', require: false
   gem 'haml_lint', '~> 0.34.0', require: false
   gem 'simplecov', '~> 0.18.5', require: false
+  gem 'simplecov-cobertura', '~> 1.3.1', require: false
   gem 'bundler-audit', '~> 0.6.1', require: false
 
   gem 'benchmark-ips', '~> 2.3.0', require: false
diff --git a/Gemfile.lock b/Gemfile.lock
index 6eb3fc1b8dd..db03015c1e0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1021,6 +1021,8 @@ GEM
     simplecov (0.18.5)
       docile (~> 1.1)
       simplecov-html (~> 0.11)
+    simplecov-cobertura (1.3.1)
+      simplecov (~> 0.8)
     simplecov-html (0.12.2)
     sixarm_ruby_unaccent (1.2.0)
     slack-messenger (2.3.3)
@@ -1382,6 +1384,7 @@ DEPENDENCIES
   sidekiq-cron (~> 1.0)
   simple_po_parser (~> 1.1.2)
   simplecov (~> 0.18.5)
+  simplecov-cobertura (~> 1.3.1)
   slack-messenger (~> 2.3.3)
   snowplow-tracker (~> 0.6.1)
   spring (~> 2.0.0)
diff --git a/app/assets/javascripts/alert_management/components/sidebar/sidebar_assignees.vue b/app/assets/javascripts/alert_management/components/sidebar/sidebar_assignees.vue
index 6c01fbcd788..1c249bc7cee 100644
--- a/app/assets/javascripts/alert_management/components/sidebar/sidebar_assignees.vue
+++ b/app/assets/javascripts/alert_management/components/sidebar/sidebar_assignees.vue
@@ -25,6 +25,9 @@ export default {
   UPDATE_ALERT_ASSIGNEES_ERROR: s__(
     'AlertManagement|There was an error while updating the assignee(s) of the alert. Please try again.',
   ),
+  UPDATE_ALERT_ASSIGNEES_GRAPHQL_ERROR: s__(
+    'AlertManagement|This assignee cannot be assigned to this alert.',
+  ),
   components: {
     GlIcon,
     GlDropdown,
@@ -156,9 +159,17 @@ export default {
             projectPath: this.projectPath,
           },
         })
-        .then(() => {
+        .then(({ data: { alertSetAssignees: { errors } = [] } = {} } = {}) => {
           this.hideDropdown();
-          this.$emit('alert-refresh');
+
+          if (errors[0]) {
+            return this.$emit(
+              'alert-sidebar-error',
+              `${this.$options.UPDATE_ALERT_ASSIGNEES_GRAPHQL_ERROR} ${errors[0]}.`,
+            );
+          }
+
+          return this.$emit('alert-refresh');
         })
         .catch(() => {
           this.$emit('alert-sidebar-error', this.$options.UPDATE_ALERT_ASSIGNEES_ERROR);
diff --git a/app/assets/stylesheets/framework/buttons.scss b/app/assets/stylesheets/framework/buttons.scss
index f47d0cab31f..1ed4484a934 100644
--- a/app/assets/stylesheets/framework/buttons.scss
+++ b/app/assets/stylesheets/framework/buttons.scss
@@ -171,7 +171,7 @@
     @include btn-green;
   }
 
-  &.btn-inverted {
+  &.btn-inverted:not(.disabled):not(:disabled) {
     &.btn-success {
       @include btn-outline($white, $green-600, $green-500, $green-100, $green-700, $green-500, $green-200, $green-600, $green-800);
     }
@@ -501,18 +501,19 @@
 
 // All disabled buttons, regardless of color, type, etc
 %disabled {
-  background-color: $gray-light !important;
-  border-color: $gray-200 !important;
-  color: $gl-text-color-disabled !important;
-  opacity: 1 !important;
-  cursor: default !important;
+  background-color: $gray-light;
+  border-color: $gray-200;
+  color: $gl-text-color-disabled;
+  opacity: 1;
+  text-decoration: none;
+  cursor: default;
 
   &.cursor-not-allowed {
-    cursor: not-allowed !important;
+    cursor: not-allowed;
   }
 
   i {
-    color: $gl-text-color-disabled !important;
+    color: $gl-text-color-disabled;
   }
 }
 
@@ -526,6 +527,10 @@ fieldset[disabled] .btn,
   &:hover {
     @extend %disabled;
   }
+
+  &.btn-link {
+    background-color: transparent;
+  }
 }
 
 [readonly] {
diff --git a/app/assets/stylesheets/framework/common.scss b/app/assets/stylesheets/framework/common.scss
index 5166c4c640d..d6d81680f58 100644
--- a/app/assets/stylesheets/framework/common.scss
+++ b/app/assets/stylesheets/framework/common.scss
@@ -421,7 +421,6 @@ img.emoji {
 .append-bottom-10 { margin-bottom: 10px; }
 .append-bottom-15 { margin-bottom: 15px; }
 .append-bottom-20 { margin-bottom: 20px; }
-.prepend-bottom-32 { margin-bottom: 32px; }
 .ml-10 { margin-left: 4.5rem; }
 .inline { display: inline-block; }
 .center { text-align: center; }
diff --git a/app/assets/stylesheets/pages/profiles/preferences.scss b/app/assets/stylesheets/pages/profiles/preferences.scss
index 3bab84af492..12386fa66ec 100644
--- a/app/assets/stylesheets/pages/profiles/preferences.scss
+++ b/app/assets/stylesheets/pages/profiles/preferences.scss
@@ -19,11 +19,6 @@
   $ui-light-bg: #dfdfdf;
   $ui-dark-mode-bg: #1f1f1f;
 
-  label {
-    margin: 0 $gl-padding-32 $gl-padding 0;
-    text-align: center;
-  }
-
   .preview {
     font-size: 0;
     height: 48px;
diff --git a/app/controllers/concerns/membership_actions.rb b/app/controllers/concerns/membership_actions.rb
index 4ab02005b45..8c7f156f7f8 100644
--- a/app/controllers/concerns/membership_actions.rb
+++ b/app/controllers/concerns/membership_actions.rb
@@ -31,7 +31,10 @@ module MembershipActions
 
   def destroy
     member = membershipable.members_and_requesters.find(params[:id])
-    Members::DestroyService.new(current_user).execute(member)
+    # !! is used in case unassign_issuables contains empty string which would result in nil
+    unassign_issuables = !!ActiveRecord::Type::Boolean.new.cast(params.delete(:unassign_issuables))
+
+    Members::DestroyService.new(current_user).execute(member, unassign_issuables: unassign_issuables)
 
     respond_to do |format|
       format.html do
diff --git a/app/finders/resource_milestone_event_finder.rb b/app/finders/resource_milestone_event_finder.rb
index 7af34f0a4bc..f3b779c8f77 100644
--- a/app/finders/resource_milestone_event_finder.rb
+++ b/app/finders/resource_milestone_event_finder.rb
@@ -1,69 +1,56 @@
 # frozen_string_literal: true
 
 class ResourceMilestoneEventFinder
-  include FinderMethods
-
-  MAX_PER_PAGE = 100
-
-  attr_reader :params, :current_user, :eventable
-
-  def initialize(current_user, eventable, params = {})
+  def initialize(current_user, eventable)
     @current_user = current_user
     @eventable = eventable
-    @params = params
   end
 
+  # Returns the ResourceMilestoneEvents of the eventable
+  # visible to the user.
+  #
+  # @return ResourceMilestoneEvent::ActiveRecord_AssociationRelation
   def execute
-    Kaminari.paginate_array(visible_events)
+    eventable.resource_milestone_events.include_relations
+      .where(milestone_id: readable_milestone_ids) # rubocop: disable CodeReuse/ActiveRecord
   end
 
   private
 
-  def visible_events
-    @visible_events ||= visible_to_user(events)
+  attr_reader :current_user, :eventable
+
+  def readable_milestone_ids
+    readable_milestones = events_milestones.select do |milestone|
+      parent_availabilities[key_for_parent(milestone.parent)]
+    end
+
+    readable_milestones.map(&:id).uniq
   end
 
-  def events
-    @events ||= eventable.resource_milestone_events.include_relations.page(page).per(per_page)
+  # rubocop: disable CodeReuse/ActiveRecord
+  def events_milestones
+    @events_milestones ||= Milestone.where(id: unique_milestone_ids_from_events)
+                             .includes(:project, :group)
   end
+  # rubocop: enable CodeReuse/ActiveRecord
 
-  def visible_to_user(events)
-    events.select { |event| visible_for_user?(event) }
-  end
-
-  def visible_for_user?(event)
-    milestone = event_milestones[event.milestone_id]
-    return if milestone.blank?
-
-    parent = milestone.parent
-    parent_availabilities[key_for_parent(parent)]
+  def relevant_milestone_parents
+    events_milestones.map(&:parent).uniq
   end
 
   def parent_availabilities
-    @parent_availabilities ||= relevant_parents.to_h do |parent|
+    @parent_availabilities ||= relevant_milestone_parents.to_h do |parent|
       [key_for_parent(parent), Ability.allowed?(current_user, :read_milestone, parent)]
     end
   end
 
+  # rubocop: disable CodeReuse/ActiveRecord
+  def unique_milestone_ids_from_events
+    eventable.resource_milestone_events.select(:milestone_id).distinct
+  end
+  # rubocop: enable CodeReuse/ActiveRecord
+
   def key_for_parent(parent)
     "#{parent.class.name}_#{parent.id}"
   end
-
-  def event_milestones
-    @milestones ||= events.map(&:milestone).uniq.to_h do |milestone|
-      [milestone.id, milestone]
-    end
-  end
-
-  def relevant_parents
-    @relevant_parents ||= event_milestones.map { |_id, milestone| milestone.parent }
-  end
-
-  def per_page
-    [params[:per_page], MAX_PER_PAGE].compact.min
-  end
-
-  def page
-    params[:page] || 1
-  end
 end
diff --git a/app/helpers/members_helper.rb b/app/helpers/members_helper.rb
index 31995c27fac..c9a0521228c 100644
--- a/app/helpers/members_helper.rb
+++ b/app/helpers/members_helper.rb
@@ -48,6 +48,14 @@ module MembersHelper
     "#{request.path}?#{options.to_param}"
   end
 
+  def member_path(member, unassign_issuables: false)
+    if member.is_a?(GroupMember)
+      group_group_member_path(member.source, member, { unassign_issuables: unassign_issuables })
+    else
+      project_project_member_path(member.source, member, { unassign_issuables: unassign_issuables })
+    end
+  end
+
   private
 
   def source_text(member)
diff --git a/app/models/issue_assignee.rb b/app/models/issue_assignee.rb
index 8128b8a538e..e57acbae546 100644
--- a/app/models/issue_assignee.rb
+++ b/app/models/issue_assignee.rb
@@ -2,9 +2,12 @@
 
 class IssueAssignee < ApplicationRecord
   belongs_to :issue
-  belongs_to :assignee, class_name: "User", foreign_key: :user_id
+  belongs_to :assignee, class_name: "User", foreign_key: :user_id, inverse_of: :issue_assignees
 
   validates :assignee, uniqueness: { scope: :issue_id }
+
+  scope :in_projects, ->(project_ids) { joins(:issue).where("issues.project_id in (?)", project_ids) }
+  scope :on_issues, ->(issue_ids) { where(issue_id: issue_ids) }
 end
 
 IssueAssignee.prepend_if_ee('EE::IssueAssignee')
diff --git a/app/models/merge_request_assignee.rb b/app/models/merge_request_assignee.rb
index fe642bee8e2..2ac1de4321a 100644
--- a/app/models/merge_request_assignee.rb
+++ b/app/models/merge_request_assignee.rb
@@ -2,7 +2,9 @@
 
 class MergeRequestAssignee < ApplicationRecord
   belongs_to :merge_request
-  belongs_to :assignee, class_name: "User", foreign_key: :user_id
+  belongs_to :assignee, class_name: "User", foreign_key: :user_id, inverse_of: :merge_request_assignees
 
   validates :assignee, uniqueness: { scope: :merge_request_id }
+
+  scope :in_projects, ->(project_ids) { joins(:merge_request).where("merge_requests.target_project_id in (?)", project_ids) }
 end
diff --git a/app/models/snippet.rb b/app/models/snippet.rb
index 10b9b4eae3d..079b4b2baf4 100644
--- a/app/models/snippet.rb
+++ b/app/models/snippet.rb
@@ -69,6 +69,7 @@ class Snippet < ApplicationRecord
   validates :visibility_level, inclusion: { in: Gitlab::VisibilityLevel.values }
 
   after_save :store_mentions!, if: :any_mentionable_attributes_changed?
+  after_create :create_statistics
 
   # Scopes
   scope :are_internal, -> { where(visibility_level: Snippet::INTERNAL) }
diff --git a/app/models/snippet_statistics.rb b/app/models/snippet_statistics.rb
index 1ff324e3789..8030328ebe4 100644
--- a/app/models/snippet_statistics.rb
+++ b/app/models/snippet_statistics.rb
@@ -4,4 +4,32 @@ class SnippetStatistics < ApplicationRecord
   belongs_to :snippet
 
   validates :snippet, presence: true
+
+  delegate :repository, to: :snippet
+
+  def update_commit_count
+    self.commit_count = repository.commit_count
+  end
+
+  def update_repository_size
+    self.repository_size = repository.size.megabytes
+  end
+
+  def update_file_count
+    count = if snippet.repository_exists?
+              repository.ls_files(repository.root_ref).size
+            else
+              0
+            end
+
+    self.file_count = count
+  end
+
+  def refresh!
+    update_commit_count
+    update_repository_size
+    update_file_count
+
+    save!
+  end
 end
diff --git a/app/models/user.rb b/app/models/user.rb
index 68d8c449fd6..4bebc5417c1 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -163,9 +163,10 @@ class User < ApplicationRecord
   has_many :award_emoji,              dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
   has_many :triggers,                 dependent: :destroy, class_name: 'Ci::Trigger', foreign_key: :owner_id # rubocop:disable Cop/ActiveRecordDependent
 
-  has_many :issue_assignees
+  has_many :issue_assignees, inverse_of: :assignee
+  has_many :merge_request_assignees, inverse_of: :assignee
   has_many :assigned_issues, class_name: "Issue", through: :issue_assignees, source: :issue
-  has_many :assigned_merge_requests, dependent: :nullify, foreign_key: :assignee_id, class_name: "MergeRequest" # rubocop:disable Cop/ActiveRecordDependent
+  has_many :assigned_merge_requests, class_name: "MergeRequest", through: :merge_request_assignees, source: :merge_request
 
   has_many :custom_attributes, class_name: 'UserCustomAttribute'
   has_many :callouts, class_name: 'UserCallout'
diff --git a/app/services/alert_management/alerts/update_service.rb b/app/services/alert_management/alerts/update_service.rb
index ffabbb37289..1c1addb4a7a 100644
--- a/app/services/alert_management/alerts/update_service.rb
+++ b/app/services/alert_management/alerts/update_service.rb
@@ -19,6 +19,8 @@ module AlertManagement
         return error_no_updates if params.empty?
 
         filter_assignees
+        return error_no_assignee_permissions if unauthorized_assignees?
+
         old_assignees = alert.assignees.to_a
 
         if alert.update(params)
@@ -38,10 +40,6 @@ module AlertManagement
         current_user&.can?(:update_alert_management_alert, alert)
       end
 
-      def assignee_todo_allowed?
-        assignee&.can?(:read_alert_management_alert, alert)
-      end
-
       def todo_service
         strong_memoize(:todo_service) do
           TodoService.new
@@ -64,18 +62,20 @@ module AlertManagement
         error(_('Please provide attributes to update'))
       end
 
+      def error_no_assignee_permissions
+        error(_('Assignee has no permissions'))
+      end
+
       # ----- Assignee-related behavior ------
+      def unauthorized_assignees?
+        params[:assignees]&.any? { |user| !user.can?(:read_alert_management_alert, alert) }
+      end
+
       def filter_assignees
         return if params[:assignees].nil?
 
-        params[:assignees] = Array(assignee)
-      end
-
-      def assignee
-        strong_memoize(:assignee) do
-          # Take first assignee while multiple are not currently supported
-          params[:assignees]&.first
-        end
+        # Always take first assignee while multiple are not currently supported
+        params[:assignees] = Array(params[:assignees].first)
       end
 
       def process_assignement(old_assignees)
@@ -84,8 +84,7 @@ module AlertManagement
       end
 
       def assign_todo
-        # Remove check in follow-up issue https://gitlab.com/gitlab-org/gitlab/-/issues/222672
-        return unless assignee_todo_allowed?
+        return if alert.assignees.empty?
 
         todo_service.assign_alert(alert, current_user)
       end
diff --git a/app/services/members/destroy_service.rb b/app/services/members/destroy_service.rb
index 20f64a99ad7..6e89cadb82d 100644
--- a/app/services/members/destroy_service.rb
+++ b/app/services/members/destroy_service.rb
@@ -2,7 +2,9 @@
 
 module Members
   class DestroyService < Members::BaseService
-    def execute(member, skip_authorization: false, skip_subresources: false)
+    WAIT_FOR_DELETE = 1.hour
+
+    def execute(member, skip_authorization: false, skip_subresources: false, unassign_issuables: false)
       raise Gitlab::Access::AccessDeniedError unless skip_authorization || can_destroy_member?(member)
 
       @skip_auth = skip_authorization
@@ -19,6 +21,7 @@ module Members
 
       delete_subresources(member) unless skip_subresources
       enqueue_delete_todos(member)
+      enqueue_unassign_issuables(member) if unassign_issuables
 
       after_execute(member: member)
 
@@ -64,6 +67,14 @@ module Members
         raise "Unknown member type: #{member}!"
       end
     end
+
+    def enqueue_unassign_issuables(member)
+      source_type = member.is_a?(GroupMember) ? 'Group' : 'Project'
+
+      member.run_after_commit do
+        MembersDestroyer::UnassignIssuablesWorker.perform_in(WAIT_FOR_DELETE, member.user_id, member.source_id, source_type)
+      end
+    end
   end
 end
 
diff --git a/app/services/members/unassign_issuables_service.rb b/app/services/members/unassign_issuables_service.rb
new file mode 100644
index 00000000000..95e07deb761
--- /dev/null
+++ b/app/services/members/unassign_issuables_service.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+module Members
+  class UnassignIssuablesService
+    attr_reader :user, :entity
+
+    def initialize(user, entity)
+      @user = user
+      @entity = entity
+    end
+
+    def execute
+      return unless entity && user
+
+      project_ids = entity.is_a?(Group) ? entity.all_projects.select(:id) : [entity.id]
+
+      user.issue_assignees.on_issues(Issue.in_projects(project_ids).select(:id)).delete_all
+      user.merge_request_assignees.in_projects(project_ids).delete_all
+
+      user.invalidate_cache_counts
+    end
+  end
+end
diff --git a/app/views/profiles/preferences/show.html.haml b/app/views/profiles/preferences/show.html.haml
index cc44d137848..d18dc0d7dc7 100644
--- a/app/views/profiles/preferences/show.html.haml
+++ b/app/views/profiles/preferences/show.html.haml
@@ -8,11 +8,12 @@
     %p
       = s_('Preferences|Customize the appearance of the application header and navigation sidebar.')
   .col-lg-8.application-theme
-    - Gitlab::Themes.each do |theme|
-      = label_tag do
-        .preview{ class: theme.css_class }
-        = f.radio_button :theme_id, theme.id, checked: Gitlab::Themes.for_user(@user).id == theme.id
-        = theme.name
+    .row
+      - Gitlab::Themes.each do |theme|
+        %label.col-6.col-sm-4.col-md-3.gl-mb-5.gl-text-center
+          .preview{ class: theme.css_class }
+          = f.radio_button :theme_id, theme.id, checked: Gitlab::Themes.for_user(@user).id == theme.id
+          = theme.name
 
   .col-sm-12
     %hr
diff --git a/app/views/shared/members/_member.html.haml b/app/views/shared/members/_member.html.haml
index f7d90a588c7..6b8739194d4 100644
--- a/app/views/shared/members/_member.html.haml
+++ b/app/views/shared/members/_member.html.haml
@@ -118,7 +118,7 @@
                       data: { confirm: leave_confirmation_message(member.source) },
                       class: "btn btn-remove align-self-center m-0 #{'ml-sm-2' unless force_mobile_view}"
           - elsif !user&.project_bot?
-            = link_to member,
+            = link_to member_path(member.member),
                       method: :delete,
                       data: { confirm: remove_member_message(member), qa_selector: 'delete_member_button' },
                       class: "btn btn-remove align-self-center m-0 #{'ml-sm-2' unless force_mobile_view}",
diff --git a/app/workers/all_queues.yml b/app/workers/all_queues.yml
index 8750223e2bf..2053a60fc23 100644
--- a/app/workers/all_queues.yml
+++ b/app/workers/all_queues.yml
@@ -1115,6 +1115,14 @@
   :weight: 1
   :idempotent: 
   :tags: []
+- :name: unassign_issuables:members_destroyer_unassign_issuables
+  :feature_category: :authentication_and_authorization
+  :has_external_dependencies: 
+  :urgency: :low
+  :resource_boundary: :unknown
+  :weight: 1
+  :idempotent: true
+  :tags: []
 - :name: update_namespace_statistics:namespaces_root_statistics
   :feature_category: :source_code_management
   :has_external_dependencies: 
diff --git a/app/workers/members_destroyer/unassign_issuables_worker.rb b/app/workers/members_destroyer/unassign_issuables_worker.rb
new file mode 100644
index 00000000000..2c17120bf48
--- /dev/null
+++ b/app/workers/members_destroyer/unassign_issuables_worker.rb
@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+module MembersDestroyer
+  class UnassignIssuablesWorker
+    include ApplicationWorker
+
+    ENTITY_TYPES = %w(Group Project).freeze
+
+    queue_namespace :unassign_issuables
+    feature_category :authentication_and_authorization
+
+    idempotent!
+
+    def perform(user_id, entity_id, entity_type)
+      unless ENTITY_TYPES.include?(entity_type)
+        logger.error(
+          message: "#{entity_type} is not a supported entity.",
+          entity_type: entity_type,
+          entity_id: entity_id,
+          user_id: user_id
+        )
+
+        return
+      end
+
+      user = User.find(user_id)
+      entity = entity_type.constantize.find(entity_id)
+
+      ::Members::UnassignIssuablesService.new(user, entity).execute
+    end
+  end
+end
diff --git a/changelogs/unreleased/221189-suppress-progress-on-pulling-image-on-auto-browser-performance-tes.yml b/changelogs/unreleased/221189-suppress-progress-on-pulling-image-on-auto-browser-performance-tes.yml
new file mode 100644
index 00000000000..b553b0db1c2
--- /dev/null
+++ b/changelogs/unreleased/221189-suppress-progress-on-pulling-image-on-auto-browser-performance-tes.yml
@@ -0,0 +1,5 @@
+---
+title: Suppress progress on pulling on Performance Test
+merge_request: 34368
+author: Takuya Noguchi
+type: other
diff --git a/changelogs/unreleased/32942-add-dart-ci-template.yml b/changelogs/unreleased/32942-add-dart-ci-template.yml
new file mode 100644
index 00000000000..15c8ab78af6
--- /dev/null
+++ b/changelogs/unreleased/32942-add-dart-ci-template.yml
@@ -0,0 +1,5 @@
+---
+title: Added CI template for Dart
+merge_request: 32942
+author: agilob
+type: added
diff --git a/changelogs/unreleased/36720-unassig-user-on-remove-option.yml b/changelogs/unreleased/36720-unassig-user-on-remove-option.yml
new file mode 100644
index 00000000000..db5a1861053
--- /dev/null
+++ b/changelogs/unreleased/36720-unassig-user-on-remove-option.yml
@@ -0,0 +1,5 @@
+---
+title: Extend members REST API with the option to unassign Issues and Merge Requests when member leaves team
+merge_request: 34388
+author:
+type: changed
diff --git a/changelogs/unreleased/dz-scope-project-snippet-routes.yml b/changelogs/unreleased/dz-scope-project-snippet-routes.yml
new file mode 100644
index 00000000000..66902b26bd9
--- /dev/null
+++ b/changelogs/unreleased/dz-scope-project-snippet-routes.yml
@@ -0,0 +1,5 @@
+---
+title: Copy project snippet routes under - scope
+merge_request: 35022
+author:
+type: other
diff --git a/changelogs/unreleased/fix-pagination-for-resource-milestone-events-api.yml b/changelogs/unreleased/fix-pagination-for-resource-milestone-events-api.yml
new file mode 100644
index 00000000000..18cc7e3bc29
--- /dev/null
+++ b/changelogs/unreleased/fix-pagination-for-resource-milestone-events-api.yml
@@ -0,0 +1,5 @@
+---
+title: Fix pagination for resource milestone events api
+merge_request: 33845
+author:
+type: fixed
diff --git a/changelogs/unreleased/fj-223700-add-count-logic-to-snippet-statistics.yml b/changelogs/unreleased/fj-223700-add-count-logic-to-snippet-statistics.yml
new file mode 100644
index 00000000000..32c9129f6c0
--- /dev/null
+++ b/changelogs/unreleased/fj-223700-add-count-logic-to-snippet-statistics.yml
@@ -0,0 +1,5 @@
+---
+title: Add snippet statistics logic
+merge_request: 35118
+author:
+type: added
diff --git a/changelogs/unreleased/limit-alert-assignees.yml b/changelogs/unreleased/limit-alert-assignees.yml
new file mode 100644
index 00000000000..8e57e2c0562
--- /dev/null
+++ b/changelogs/unreleased/limit-alert-assignees.yml
@@ -0,0 +1,5 @@
+---
+title: Limit alert assignment to only users who can read alerts
+merge_request: 34681
+author:
+type: fixed
diff --git a/changelogs/unreleased/nfriend-fix-theme-alignment.yml b/changelogs/unreleased/nfriend-fix-theme-alignment.yml
new file mode 100644
index 00000000000..e3e55479a07
--- /dev/null
+++ b/changelogs/unreleased/nfriend-fix-theme-alignment.yml
@@ -0,0 +1,5 @@
+---
+title: Fix alignment of navigation theme options
+merge_request: 35041
+author:
+type: fixed
diff --git a/config/karma.config.js b/config/karma.config.js
index 97794225a3f..31fdd5bffd1 100644
--- a/config/karma.config.js
+++ b/config/karma.config.js
@@ -181,7 +181,7 @@ module.exports = function(config) {
   if (process.env.BABEL_ENV === 'coverage' || process.env.NODE_ENV === 'coverage') {
     karmaConfig.reporters.push('coverage-istanbul');
     karmaConfig.coverageIstanbulReporter = {
-      reports: ['html', 'text-summary'],
+      reports: ['html', 'text-summary', 'cobertura'],
       dir: 'coverage-javascript/',
       subdir: '.',
       fixWebpackSourcePaths: true,
diff --git a/config/routes/project.rb b/config/routes/project.rb
index d00e0ab1d04..48279b36fc1 100644
--- a/config/routes/project.rb
+++ b/config/routes/project.rb
@@ -369,6 +369,19 @@ constraints(::Constraints::ProjectUrlConstrainer.new) do
         end
       end
 
+      # Serve snippet routes under /-/snippets.
+      # To ensure an old unscoped routing is used for the UI we need to
+      # add prefix 'as' to the scope routing and place it below original routing.
+      # Issue https://gitlab.com/gitlab-org/gitlab/-/issues/29572
+      scope '-', as: :scoped do
+        resources :snippets, concerns: :awardable, constraints: { id: /\d+/ } do # rubocop: disable Cop/PutProjectRoutesUnderScope
+          member do
+            get :raw
+            post :mark_as_spam
+          end
+        end
+      end
+
       namespace :prometheus do
         resources :alerts, constraints: { id: /\d+/ }, only: [:index, :create, :show, :update, :destroy] do # rubocop: disable Cop/PutProjectRoutesUnderScope
           post :notify, on: :collection
diff --git a/config/sidekiq_queues.yml b/config/sidekiq_queues.yml
index 0052910b56e..edeff06c63c 100644
--- a/config/sidekiq_queues.yml
+++ b/config/sidekiq_queues.yml
@@ -262,6 +262,8 @@
   - 1
 - - todos_destroyer
   - 1
+- - unassign_issuables
+  - 1
 - - update_external_pull_requests
   - 3
 - - update_highest_role
diff --git a/doc/api/members.md b/doc/api/members.md
index dadd609b7ed..979d8a7a186 100644
--- a/doc/api/members.md
+++ b/doc/api/members.md
@@ -373,6 +373,7 @@ DELETE /projects/:id/members/:user_id
 | --------- | ---- | -------- | ----------- |
 | `id`      | integer/string | yes | The ID or [URL-encoded path of the project or group](README.md#namespaced-path-encoding) owned by the authenticated user |
 | `user_id` | integer | yes   | The user ID of the member |
+| `unassign_issuables` | boolean | false   | Flag indicating if the removed member should be unassigned from any issues or merge requests within given group or project |
 
 ```shell
 curl --request DELETE --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/groups/:id/members/:user_id"
diff --git a/doc/api/resource_weight_events.md b/doc/api/resource_weight_events.md
new file mode 100644
index 00000000000..700ef288440
--- /dev/null
+++ b/doc/api/resource_weight_events.md
@@ -0,0 +1,108 @@
+---
+stage: Plan
+group: Project Management
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+---
+
+# Resource weight events API
+
+Resource weight events keep track of what happens to GitLab [issues](../user/project/issues/).
+
+Use them to track which weight was set, who did it, and when it happened.
+
+## Issues
+
+### List project issue weight events
+
+Gets a list of all weight events for a single issue.
+
+```plaintext
+GET /projects/:id/issues/:issue_iid/resource_weight_events
+```
+
+| Attribute   | Type           | Required | Description                                                                     |
+| ----------- | -------------- | -------- | ------------------------------------------------------------------------------- |
+| `id`        | integer/string | yes      | The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) |
+| `issue_iid` | integer        | yes      | The IID of an issue                                                             |
+
+Example request:
+
+```shell
+curl --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/projects/5/issues/11/resource_weight_events"
+```
+
+Example response:
+
+```json
+[
+  {
+    "id": 142,
+    "user": {
+      "id": 1,
+      "name": "Administrator",
+      "username": "root",
+      "state": "active",
+      "avatar_url": "https://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
+      "web_url": "http://gitlab.example.com/root"
+    },
+    "created_at": "2018-08-20T13:38:20.077Z",
+    "issue_id": 253,
+    "weight": 3
+  },
+  {
+    "id": 143,
+    "user": {
+      "id": 1,
+      "name": "Administrator",
+      "username": "root",
+      "state": "active",
+      "avatar_url": "https://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
+      "web_url": "http://gitlab.example.com/root"
+    },
+    "created_at": "2018-08-21T14:38:20.077Z",
+    "issue_id": 253,
+    "weight": 2
+  }
+]
+```
+
+### Get single issue weight event
+
+Returns a single weight event for a specific project issue
+
+```plaintext
+GET /projects/:id/issues/:issue_iid/resource_weight_events/:resource_weight_event_id
+```
+
+Parameters:
+
+| Attribute                     | Type           | Required | Description                                                                     |
+| ----------------------------- | -------------- | -------- | ------------------------------------------------------------------------------- |
+| `id`                          | integer/string | yes      | The ID or [URL-encoded path](README.md#namespaced-path-encoding) of the project |
+| `issue_iid`                   | integer        | yes      | The IID of an issue                                                             |
+| `resource_weight_event_id`    | integer        | yes      | The ID of a weight event                                                     |
+
+Example request:
+
+```shell
+curl --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/projects/5/issues/11/resource_weight_events/143"
+```
+
+Example response:
+
+```json
+{
+"id": 143,
+"user": {
+  "id": 1,
+  "name": "Administrator",
+  "username": "root",
+  "state": "active",
+  "avatar_url": "https://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
+  "web_url": "http://gitlab.example.com/root"
+},
+"created_at": "2018-08-21T14:38:20.077Z",
+"issue_id": 253,
+"weight": 2
+}
+```
diff --git a/doc/development/database/database_reviewer_guidelines.md b/doc/development/database/database_reviewer_guidelines.md
new file mode 100644
index 00000000000..f3f0a69d54a
--- /dev/null
+++ b/doc/development/database/database_reviewer_guidelines.md
@@ -0,0 +1,95 @@
+# Database Reviewer Guidelines
+
+This page includes introductory material for new database reviewers.
+
+If you are interested in getting an application update reviewed,
+check the [database review guidelines](../database_review.md).
+
+## Scope of work done by a database reviewer
+
+Database reviewers are domain experts who have substantial experience with databases,
+`SQL`, and query performance optimization.
+
+A database review is required whenever an application update [touches the database](../database_review.md#general-process).
+
+The database reviewer is tasked with reviewing the database specific updates and
+making sure that any queries or modifications will perform without issues
+at the scale of GitLab.com.
+
+For more information on the database review process, check the [database review guidelines](../database_review.md).
+
+## How to apply for becoming a database reviewer
+
+Team members are encouraged to self-identify as database domain experts and add it to their [team profile](https://gitlab.com/gitlab-com/www-gitlab-com/-/blob/master/data/team.yml)
+
+```yaml
+  projects:
+    gitlab:
+      - reviewer database
+```
+
+Assign the MR which adds your expertise to the `team.yml` file to a database maintainer
+or the [Database Team's Engineering Manager](https://about.gitlab.com/handbook/engineering/development/enablement/database/).
+
+Once the `team.yml` update is merged, the [Reviewer roulette](../code_review.md#reviewer-roulette)
+may recommend you as a database reviewer.
+
+## Resources for database reviewers
+
+As a database reviewer, join the internal `#database` Slack channel and ask questions or discuss
+database related issues with other database reviewers and maintainers.
+
+There is also an optional database office hours call held bi-weekly, alternating between
+European/US and APAC friendly hours. You can join the office hours call and bring topics
+that require a more in-depth discussion between the database reviewers and maintainers:
+
+- [Database Office Hours Agenda](https://docs.google.com/document/d/1wgfmVL30F8SdMg-9yY6Y8djPSxWNvKmhR5XmsvYX1EI/edit).
+- [Youtube playlist with past recordings](https://www.youtube.com/playlist?list=PL05JrBw4t0Kp-kqXeiF7fF7cFYaKtdqXM).
+
+You should also join the [#database-labs](../understanding_explain_plans.md#database-lab)
+Slack channel and get familiar with how to use Joe, the slackbot that provides developers
+with their own clone of the production database.
+
+Understanding and efficiently using `EXPLAIN` plans is at the core of the database review process.
+The following guides provide a quick introduction and links to follow on more advanced topics:
+
+- Guide on [understanding EXPLAIN plans](../understanding_explain_plans.md).
+- [Explaining the unexplainable series in depesz](https://www.depesz.com/tag/unexplainable/).
+
+Finally, you can find various guides in the [Database guides](index.md) page that cover more specific
+topics and use cases. The most frequently required during database reviewing are the following:
+
+- [Migrations style guide](../migration_style_guide.md) for creating safe SQL migrations.
+- [What requires downtime?](../what_requires_downtime.md).
+- [SQL guidelines](../sql.md) for working with SQL queries.
+
+## How to apply for becoming a database maintainer
+
+Once a database reviewer feels confident on switching to a database maintainer,
+they can update their [team profile](https://gitlab.com/gitlab-com/www-gitlab-com/-/blob/master/data/team.yml)
+to a `trainee_maintainer database`:
+
+```yaml
+  projects:
+    gitlab:
+      - trainee_maintainer database
+```
+
+The first step is to a create a [Trainee Database Maintainer Issue](https://gitlab.com/gitlab-com/www-gitlab-com/issues/new?issuable_template=trainee-database-maintainer).
+Use and follow the process described in the 'Trainee database maintainer' template.
+
+Note that [trainee maintainers](https://about.gitlab.com/handbook/engineering/workflow/code-review/#trainee-maintainer)
+are three times as likely to be picked by the [Danger bot](../dangerbot.md) as other reviewers.
+
+## What to do if you feel overwhelmed
+
+Similar to all types of reviews, [unblocking others is always a top priority](https://about.gitlab.com/handbook/values/#global-optimization).
+Database reviewers are expected to [review assigned merge requests in a timely manner](../code_review.md#review-turnaround-time)
+or let the author know as soon as possible and help them find another reviewer or maintainer.
+
+We are doing reviews to help the rest of the GitLab team and, at the same time, get exposed
+to more use cases, get a lot of insights and hone our database and data management skills.
+
+If you are feeling overwhelmed, think you are at capacity, and are unable to accept any more
+reviews until some have been completed, communicate this through your GitLab status by setting
+the `:red_circle:` emoji and mentioning that you are at capacity in the status text.
diff --git a/doc/development/database/index.md b/doc/development/database/index.md
index 665af623059..9ea5b6fcaac 100644
--- a/doc/development/database/index.md
+++ b/doc/development/database/index.md
@@ -1,5 +1,13 @@
 # Database guides
 
+## Database Reviews
+
+- If you're creating a database MR for review, check out our [Database review guidelines](../database_review.md).
+
+  It provides an introduction on database-related changes, migrations, and complex SQL queries.
+
+- If you're a database reviewer or want to become one, check out our [introduction to reviewing database changes](database_reviewer_guidelines.md).
+
 ## Tooling
 
 - [Understanding EXPLAIN plans](../understanding_explain_plans.md)
diff --git a/doc/install/aws/index.md b/doc/install/aws/index.md
index 83030b6d01d..d0f90d45ea7 100644
--- a/doc/install/aws/index.md
+++ b/doc/install/aws/index.md
@@ -8,7 +8,7 @@ This page offers a walkthrough of a common configuration
 for GitLab on AWS. You should customize it to accommodate your needs.
 
 NOTE: **Note**
-For organizations with 300 users or less, the recommended AWS installation method is to launch an EC2 single box [Omnibus Installation](https://about.gitlab.com/install/) and implement a snapshot strategy for backing up the data.
+For organizations with 1,000 users or less, the recommended AWS installation method is to launch an EC2 single box [Omnibus Installation](https://about.gitlab.com/install/) and implement a snapshot strategy for backing up the data. See the [1,000 user reference architecture](../../administration/reference_architectures/1k_users.md) for more.
 
 ## Introduction
 
diff --git a/doc/user/infrastructure/index.md b/doc/user/infrastructure/index.md
index 38ba3979006..a6dbd13260e 100644
--- a/doc/user/infrastructure/index.md
+++ b/doc/user/infrastructure/index.md
@@ -6,6 +6,13 @@ info: To determine the technical writer assigned to the Stage/Group associated w
 
 # Infrastructure as code with Terraform and GitLab
 
+## Motivation
+
+The Terraform integration features within GitLab enable your GitOps / Infrastructure-as-Code (IaC)
+workflows to tie into GitLab's authentication and authorization. These features focus on
+lowering the barrier to entry for teams to adopt Terraform, collaborate effectively within
+GitLab, and support Terraform best practices.
+
 ## GitLab managed Terraform State
 
 > [Introduced](https://gitlab.com/groups/gitlab-org/-/epics/2673) in GitLab 13.0.
diff --git a/doc/user/project/clusters/serverless/index.md b/doc/user/project/clusters/serverless/index.md
index 45fb313d177..8f7a0022ff4 100644
--- a/doc/user/project/clusters/serverless/index.md
+++ b/doc/user/project/clusters/serverless/index.md
@@ -835,7 +835,7 @@ The instructions below relate to installing and running Certbot on a Linux serve
 ## Using an older version of `gitlabktl`
 
 There may be situations where you want to run an older version of `gitlabktl`. This
-requires setting an older version of the `gitlabktl` image in the `.gitlab-ci.yml file.`
+requires setting an older version of the `gitlabktl` image in the `.gitlab-ci.yml` file.
 
 To set an older version, add `image:` to the `functions:deploy` block. For example:
 
diff --git a/lib/api/members.rb b/lib/api/members.rb
index 37d4ca29b68..341d4837468 100644
--- a/lib/api/members.rb
+++ b/lib/api/members.rb
@@ -145,6 +145,8 @@ module API
         desc 'Removes a user from a group or project.'
         params do
           requires :user_id, type: Integer, desc: 'The user ID of the member'
+          optional :unassign_issuables, type: Boolean, default: false,
+                   desc: 'Flag indicating if the removed member should be unassigned from any issues or merge requests within given group or project'
         end
         # rubocop: disable CodeReuse/ActiveRecord
         delete ":id/members/:user_id" do
@@ -152,7 +154,7 @@ module API
           member = source.members.find_by!(user_id: params[:user_id])
 
           destroy_conditionally!(member) do
-            ::Members::DestroyService.new(current_user).execute(member)
+            ::Members::DestroyService.new(current_user).execute(member, unassign_issuables: params[:unassign_issuables])
           end
         end
         # rubocop: enable CodeReuse/ActiveRecord
diff --git a/lib/api/resource_milestone_events.rb b/lib/api/resource_milestone_events.rb
index 30ff5a9b4be..e466e236371 100644
--- a/lib/api/resource_milestone_events.rb
+++ b/lib/api/resource_milestone_events.rb
@@ -26,8 +26,7 @@ module API
         get ":id/#{eventables_str}/:eventable_id/resource_milestone_events" do
           eventable = find_noteable(eventable_type, params[:eventable_id])
 
-          opts = { page: params[:page], per_page: params[:per_page] }
-          events = ResourceMilestoneEventFinder.new(current_user, eventable, opts).execute
+          events = ResourceMilestoneEventFinder.new(current_user, eventable).execute
 
           present paginate(events), with: Entities::ResourceMilestoneEvent
         end
diff --git a/lib/gitlab/ci/templates/Dart.gitlab-ci.yml b/lib/gitlab/ci/templates/Dart.gitlab-ci.yml
new file mode 100644
index 00000000000..cc383f89b0c
--- /dev/null
+++ b/lib/gitlab/ci/templates/Dart.gitlab-ci.yml
@@ -0,0 +1,22 @@
+# https://hub.docker.com/r/google/dart
+image: google/dart:2.8.4
+
+variables:
+  # Use to learn more:
+  # pub run test --help
+  PUB_VARS: "--platform vm --timeout 30s --concurrency=6 --test-randomize-ordering-seed=random --reporter=expanded"
+
+# Cache downloaded dependencies and plugins between builds.
+# To keep cache across branches add 'key: "$CI_JOB_NAME"'
+cache:
+  paths:
+    - .pub-cache/global_packages
+
+before_script:
+  - export PATH="$PATH":"~/.pub-cache/bin"
+  - pub get --no-precompile
+
+test:
+  stage: test
+  script:
+    - pub run test $PUB_VARS
diff --git a/lib/gitlab/ci/templates/Jobs/Browser-Performance-Testing.gitlab-ci.yml b/lib/gitlab/ci/templates/Jobs/Browser-Performance-Testing.gitlab-ci.yml
index 9a34f8cb113..d4ac8036594 100644
--- a/lib/gitlab/ci/templates/Jobs/Browser-Performance-Testing.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Jobs/Browser-Performance-Testing.gitlab-ci.yml
@@ -4,6 +4,7 @@ performance:
   allow_failure: true
   variables:
     DOCKER_TLS_CERTDIR: ""
+    SITESPEED_IMAGE: "sitespeedio/sitespeed.io:11.2.0"
   services:
     - docker:19.03.11-dind
   script:
@@ -17,13 +18,14 @@ performance:
     - mkdir gitlab-exporter
     - wget -O gitlab-exporter/index.js https://gitlab.com/gitlab-org/gl-performance/raw/1.0.0/index.js
     - mkdir sitespeed-results
+    - docker pull --quiet ${SITESPEED_IMAGE}
     - |
       if [ -f .gitlab-urls.txt ]
       then
         sed -i -e 's@^@'"$CI_ENVIRONMENT_URL"'@' .gitlab-urls.txt
-        docker run --shm-size=1g --rm -v "$(pwd)":/sitespeed.io sitespeedio/sitespeed.io:11.2.0 --plugins.add ./gitlab-exporter --outputFolder sitespeed-results .gitlab-urls.txt
+        docker run --shm-size=1g --rm -v "$(pwd)":/sitespeed.io ${SITESPEED_IMAGE} --plugins.add ./gitlab-exporter --outputFolder sitespeed-results .gitlab-urls.txt
       else
-        docker run --shm-size=1g --rm -v "$(pwd)":/sitespeed.io sitespeedio/sitespeed.io:11.2.0 --plugins.add ./gitlab-exporter --outputFolder sitespeed-results "$CI_ENVIRONMENT_URL"
+        docker run --shm-size=1g --rm -v "$(pwd)":/sitespeed.io ${SITESPEED_IMAGE} --plugins.add ./gitlab-exporter --outputFolder sitespeed-results "$CI_ENVIRONMENT_URL"
       fi
     - mv sitespeed-results/data/performance.json performance.json
   artifacts:
diff --git a/locale/gitlab.pot b/locale/gitlab.pot
index ec654041b5f..b837fd415fe 100644
--- a/locale/gitlab.pot
+++ b/locale/gitlab.pot
@@ -2011,6 +2011,9 @@ msgstr ""
 msgid "AlertManagement|There was an error while updating the status of the alert. Please try again."
 msgstr ""
 
+msgid "AlertManagement|This assignee cannot be assigned to this alert."
+msgstr ""
+
 msgid "AlertManagement|Tool"
 msgstr ""
 
@@ -3020,6 +3023,9 @@ msgid_plural "%d Assignees"
 msgstr[0] ""
 msgstr[1] ""
 
+msgid "Assignee has no permissions"
+msgstr ""
+
 msgid "Assignee lists not available with your current license"
 msgstr ""
 
diff --git a/package.json b/package.json
index 2abe1e69f84..38d7089ef77 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
     "@babel/plugin-syntax-import-meta": "^7.10.1",
     "@babel/preset-env": "^7.10.1",
     "@gitlab/at.js": "1.5.5",
-    "@gitlab/svgs": "1.140.0",
+    "@gitlab/svgs": "1.141.0",
     "@gitlab/ui": "17.2.0",
     "@gitlab/visual-review-tools": "1.6.1",
     "@rails/actioncable": "^6.0.3-1",
diff --git a/scripts/frontend/merge_coverage_frontend.js b/scripts/frontend/merge_coverage_frontend.js
index 507695b45e5..99034176b29 100644
--- a/scripts/frontend/merge_coverage_frontend.js
+++ b/scripts/frontend/merge_coverage_frontend.js
@@ -26,6 +26,6 @@ reportFiles
 
 const context = createContext({ coverageMap: coverageMap, dir: 'coverage-frontend' });
 
-['json', 'lcov', 'text-summary', 'clover'].forEach(reporter => {
+['json', 'lcov', 'text-summary', 'clover', 'cobertura'].forEach(reporter => {
   create(reporter, {}).execute(context);
 });
diff --git a/scripts/merge-simplecov b/scripts/merge-simplecov
index 746be3317a7..c00dae81c4d 100755
--- a/scripts/merge-simplecov
+++ b/scripts/merge-simplecov
@@ -2,6 +2,7 @@
 
 require_relative '../spec/simplecov_env'
 SimpleCovEnv.configure_profile
+SimpleCovEnv.configure_formatter
 
 module SimpleCov
   module ResultMerger
diff --git a/spec/finders/resource_milestone_event_finder_spec.rb b/spec/finders/resource_milestone_event_finder_spec.rb
index ff4508996e2..27e124afe2e 100644
--- a/spec/finders/resource_milestone_event_finder_spec.rb
+++ b/spec/finders/resource_milestone_event_finder_spec.rb
@@ -42,18 +42,6 @@ RSpec.describe ResourceMilestoneEventFinder do
       expect(subject).to be_empty
     end
 
-    it 'paginates results' do
-      milestone = create(:milestone, project: issue_project)
-      create_event(milestone)
-      create_event(milestone)
-      issue_project.add_guest(user)
-
-      paginated = described_class.new(user, issue, per_page: 1).execute
-
-      expect(subject.count).to eq 2
-      expect(paginated.count).to eq 1
-    end
-
     context 'when multiple events share the same milestone' do
       it 'avoids N+1 queries' do
         issue_project.add_developer(user)
@@ -71,8 +59,8 @@ RSpec.describe ResourceMilestoneEventFinder do
         create_event(milestone2, :add)
         create_event(milestone2, :remove)
 
-        # 1 events + 1 milestones + 1 project + 1 user + 4 ability
-        expect { described_class.new(user, issue).execute }.not_to exceed_query_limit(control_count + 7)
+        # 1 milestones + 1 project + 1 user + 4 ability
+        expect { described_class.new(user, issue).execute }.not_to exceed_query_limit(control_count + 6)
       end
     end
 
diff --git a/spec/frontend/alert_management/components/alert_managment_sidebar_assignees_spec.js b/spec/frontend/alert_management/components/alert_managment_sidebar_assignees_spec.js
index 2452ba7c63b..2cab761f730 100644
--- a/spec/frontend/alert_management/components/alert_managment_sidebar_assignees_spec.js
+++ b/spec/frontend/alert_management/components/alert_managment_sidebar_assignees_spec.js
@@ -59,7 +59,7 @@ describe('Alert Details Sidebar Assignees', () => {
   describe('updating the alert status', () => {
     const mockUpdatedMutationResult = {
       data: {
-        updateAlertStatus: {
+        alertSetAssignees: {
           errors: [],
           alert: {
             assigneeUsernames: ['root'],
@@ -125,6 +125,26 @@ describe('Alert Details Sidebar Assignees', () => {
       });
     });
 
+    it('shows an error when request contains error messages', () => {
+      wrapper.setData({ isDropdownSearching: false });
+      const errorMutationResult = {
+        data: {
+          alertSetAssignees: {
+            errors: ['There was a problem for sure.'],
+            alert: {},
+          },
+        },
+      };
+
+      jest.spyOn(wrapper.vm.$apollo, 'mutate').mockResolvedValue(errorMutationResult);
+
+      return wrapper.vm.$nextTick().then(() => {
+        const SideBarAssigneeItem = wrapper.findAll(SidebarAssignee).at(0);
+        SideBarAssigneeItem.vm.$emit('click');
+        expect(wrapper.emitted('alert-refresh')).toBeUndefined();
+      });
+    });
+
     it('stops updating and cancels loading when the request fails', () => {
       jest.spyOn(wrapper.vm.$apollo, 'mutate').mockReturnValue(Promise.reject(new Error()));
       wrapper.vm.updateAlertAssignees('root');
diff --git a/spec/models/issue_assignee_spec.rb b/spec/models/issue_assignee_spec.rb
index 2d59ba15101..df8e91cd133 100644
--- a/spec/models/issue_assignee_spec.rb
+++ b/spec/models/issue_assignee_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-describe IssueAssignee do
+RSpec.describe IssueAssignee do
   let(:issue) { create(:issue) }
 
   subject { issue.issue_assignees.build(assignee: create(:user)) }
@@ -15,4 +15,37 @@ describe IssueAssignee do
   describe 'validations' do
     it { is_expected.to validate_uniqueness_of(:assignee).scoped_to(:issue_id) }
   end
+
+  describe 'scopes' do
+    let_it_be(:user) { create(:user) }
+    let_it_be(:project) { create(:project) }
+    let_it_be(:project_issue) { create(:issue, project: project, assignee_ids: [user.id]) }
+
+    before do
+      issue.update!(assignee_ids: [user.id])
+    end
+
+    context 'in_projects' do
+      it 'returns issue assignees for given project' do
+        expect(IssueAssignee.count).to eq 2
+
+        assignees = IssueAssignee.in_projects([project])
+
+        expect(assignees.count).to eq 1
+        expect(assignees.first.user_id).to eq project_issue.issue_assignees.first.user_id
+        expect(assignees.first.issue_id).to eq project_issue.issue_assignees.first.issue_id
+      end
+    end
+
+    context 'on_issues' do
+      it 'returns issue assignees for given issues' do
+        expect(IssueAssignee.count).to eq 2
+
+        assignees = IssueAssignee.on_issues([project_issue])
+
+        expect(assignees.count).to eq 1
+        expect(assignees.first.issue_id).to eq project_issue.issue_assignees.first.issue_id
+      end
+    end
+  end
 end
diff --git a/spec/models/merge_request_assignee_spec.rb b/spec/models/merge_request_assignee_spec.rb
index d6aab15d990..bd2df428ed0 100644
--- a/spec/models/merge_request_assignee_spec.rb
+++ b/spec/models/merge_request_assignee_spec.rb
@@ -15,4 +15,26 @@ describe MergeRequestAssignee do
   describe 'validations' do
     it { is_expected.to validate_uniqueness_of(:assignee).scoped_to(:merge_request_id) }
   end
+
+  describe 'scopes' do
+    let_it_be(:user) { create(:user) }
+    let_it_be(:project) { create(:project, :repository) }
+    let_it_be(:project_merge_request) { create(:merge_request, target_project: project, source_project: project, assignee_ids: [user.id]) }
+
+    before do
+      merge_request.update!(assignee_ids: [user.id])
+    end
+
+    context 'in_projects' do
+      it 'returns issue assignees for given project' do
+        expect(MergeRequestAssignee.count).to eq 2
+
+        assignees = MergeRequestAssignee.in_projects([project])
+
+        expect(assignees.count).to eq 1
+        expect(assignees.first.user_id).to eq project_merge_request.merge_request_assignees.first.user_id
+        expect(assignees.first.merge_request_id).to eq project_merge_request.merge_request_assignees.first.merge_request_id
+      end
+    end
+  end
 end
diff --git a/spec/models/snippet_spec.rb b/spec/models/snippet_spec.rb
index 6edaf0410f5..7ded8c380fe 100644
--- a/spec/models/snippet_spec.rb
+++ b/spec/models/snippet_spec.rb
@@ -92,6 +92,17 @@ describe Snippet do
     end
   end
 
+  describe 'callbacks' do
+    it 'creates snippet statistics when the snippet is created' do
+      snippet = build(:snippet)
+      expect(snippet.statistics).to be_nil
+
+      snippet.save
+
+      expect(snippet.statistics).to be_persisted
+    end
+  end
+
   describe '#to_reference' do
     context 'when snippet belongs to a project' do
       let(:project) { build(:project, name: 'sample-project') }
diff --git a/spec/models/snippet_statistics_spec.rb b/spec/models/snippet_statistics_spec.rb
index d76fe5fb589..1bfb80e2c1d 100644
--- a/spec/models/snippet_statistics_spec.rb
+++ b/spec/models/snippet_statistics_spec.rb
@@ -3,6 +3,87 @@
 require 'spec_helper'
 
 describe SnippetStatistics do
+  let_it_be(:snippet_without_repo) { create(:snippet) }
+  let_it_be(:snippet_with_repo) { create(:snippet, :repository) }
+
+  let(:statistics) { snippet_with_repo.statistics }
+
   it { is_expected.to belong_to(:snippet) }
   it { is_expected.to validate_presence_of(:snippet) }
+
+  describe '#update_commit_count' do
+    subject { statistics.update_commit_count }
+
+    it 'updates the count of commits' do
+      commit_count = snippet_with_repo.repository.commit_count
+
+      subject
+
+      expect(statistics.commit_count).to eq commit_count
+    end
+
+    context 'when the snippet does not have a repository' do
+      let(:statistics) { snippet_without_repo.statistics }
+
+      it 'returns 0' do
+        expect(subject).to eq 0
+        expect(statistics.commit_count).to eq 0
+      end
+    end
+  end
+
+  describe '#update_file_count' do
+    subject { statistics.update_file_count }
+
+    it 'updates the count of files' do
+      file_count = snippet_with_repo.repository.ls_files(nil).count
+
+      subject
+
+      expect(statistics.file_count).to eq file_count
+    end
+
+    context 'when the snippet does not have a repository' do
+      let(:statistics) { snippet_without_repo.statistics }
+
+      it 'returns 0' do
+        expect(subject).to eq 0
+        expect(statistics.file_count).to eq 0
+      end
+    end
+  end
+
+  describe '#update_repository_size' do
+    subject { statistics.update_repository_size }
+
+    it 'updates the repository_size' do
+      repository_size = snippet_with_repo.repository.size.megabytes.to_i
+
+      subject
+
+      expect(statistics.repository_size).to eq repository_size
+    end
+
+    context 'when the snippet does not have a repository' do
+      let(:statistics) { snippet_without_repo.statistics }
+
+      it 'returns 0' do
+        expect(subject).to eq 0
+        expect(statistics.repository_size).to eq 0
+      end
+    end
+  end
+
+  describe '#refresh!' do
+    subject { statistics.refresh! }
+
+    it 'retrieves and saves statistic data from repository' do
+      expect(statistics).to receive(:update_commit_count)
+      expect(statistics).to receive(:update_file_count)
+      expect(statistics).to receive(:update_repository_size)
+      expect(statistics).to receive(:save!)
+
+      subject
+    end
+  end
 end
diff --git a/spec/routing/project_routing_spec.rb b/spec/routing/project_routing_spec.rb
index 966d6f7b106..0a57c76ee75 100644
--- a/spec/routing/project_routing_spec.rb
+++ b/spec/routing/project_routing_spec.rb
@@ -407,6 +407,10 @@ describe 'project routing' do
     it 'to #destroy' do
       expect(delete('/gitlab/gitlabhq/snippets/1')).to route_to('projects/snippets#destroy', namespace_id: 'gitlab', project_id: 'gitlabhq', id: '1')
     end
+
+    it 'to #show from scope routing' do
+      expect(get('/gitlab/gitlabhq/-/snippets/1')).to route_to('projects/snippets#show', namespace_id: 'gitlab', project_id: 'gitlabhq', id: '1')
+    end
   end
 
   # test_project_hook POST    /:project_id/hooks/:id/test(.:format) hooks#test
diff --git a/spec/services/alert_management/alerts/update_service_spec.rb b/spec/services/alert_management/alerts/update_service_spec.rb
index e185e67c5cf..69a9287ce2a 100644
--- a/spec/services/alert_management/alerts/update_service_spec.rb
+++ b/spec/services/alert_management/alerts/update_service_spec.rb
@@ -4,6 +4,7 @@ require 'spec_helper'
 
 describe AlertManagement::Alerts::UpdateService do
   let_it_be(:user_with_permissions) { create(:user) }
+  let_it_be(:other_user_with_permissions) { create(:user) }
   let_it_be(:user_without_permissions) { create(:user) }
   let_it_be(:alert, reload: true) { create(:alert_management_alert) }
   let_it_be(:project) { alert.project }
@@ -15,119 +16,131 @@ describe AlertManagement::Alerts::UpdateService do
 
   before_all do
     project.add_developer(user_with_permissions)
+    project.add_developer(other_user_with_permissions)
   end
 
   describe '#execute' do
+    shared_examples 'does not add a todo' do
+      specify { expect { response }.not_to change(Todo, :count) }
+    end
+
+    shared_examples 'does not add a system note' do
+      specify { expect { response }.not_to change(Note, :count) }
+    end
+
+    shared_examples 'error response' do |message|
+      it_behaves_like 'does not add a todo'
+      it_behaves_like 'does not add a system note'
+
+      it 'has an informative message' do
+        expect(response).to be_error
+        expect(response.message).to eq(message)
+      end
+    end
+
     subject(:response) { service.execute }
 
     context 'when the current_user is nil' do
       let(:current_user) { nil }
 
-      it 'results in an error' do
-        expect(response).to be_error
-        expect(response.message).to eq('You have no permissions')
-      end
+      it_behaves_like 'error response', 'You have no permissions'
     end
 
-    context 'when user does not have permission to update alerts' do
+    context 'when current_user does not have permission to update alerts' do
       let(:current_user) { user_without_permissions }
 
-      it 'results in an error' do
-        expect(response).to be_error
-        expect(response.message).to eq('You have no permissions')
-      end
+      it_behaves_like 'error response', 'You have no permissions'
     end
 
     context 'when no parameters are included' do
-      it 'results in an error' do
-        expect(response).to be_error
-        expect(response.message).to eq('Please provide attributes to update')
-      end
+      it_behaves_like 'error response', 'Please provide attributes to update'
     end
 
-    context 'when an error occures during update' do
+    context 'when an error occurs during update' do
       let(:params) { { title: nil } }
 
-      it 'results in an error' do
-        expect { response }.not_to change { alert.reload.notes.count }
-        expect(response).to be_error
-        expect(response.message).to eq("Title can't be blank")
-      end
+      it_behaves_like 'error response', "Title can't be blank"
     end
 
     context 'when a model attribute is included without assignees' do
       let(:params) { { title: 'This is an updated alert.' } }
 
+      it_behaves_like 'does not add a todo'
+      it_behaves_like 'does not add a system note'
+
       it 'updates the attribute' do
         original_title = alert.title
 
         expect { response }.to change { alert.title }.from(original_title).to(params[:title])
         expect(response).to be_success
       end
-
-      it 'skips adding a todo' do
-        expect { response }.not_to change(Todo, :count)
-      end
     end
 
     context 'when assignees are included' do
-      let(:params) { { assignees: [user_with_permissions] } }
+      shared_examples 'adds a todo' do
+        let(:assignee) { expected_assignees.first }
 
-      after do
-        alert.assignees = []
+        specify do
+          expect { response }.to change { assignee.reload.todos.count }.by(1)
+          expect(assignee.todos.last.author).to eq(current_user)
+        end
       end
 
-      it 'assigns the user' do
-        expect { response }.to change { alert.reload.assignees }.from([]).to(params[:assignees])
-        expect(response).to be_success
+      shared_examples 'adds a system note' do
+        specify { expect { response }.to change { alert.reload.notes.count }.by(1) }
       end
 
-      it 'creates a system note for the assignment' do
-        expect { response }.to change { alert.reload.notes.count }.by(1)
-      end
+      shared_examples 'successful assignment' do
+        it_behaves_like 'adds a system note'
+        it_behaves_like 'adds a todo'
 
-      it 'adds a todo' do
-        expect { response }.to change { Todo.where(user: user_with_permissions).count }.by(1)
-      end
-
-      context 'when current user is not the assignee' do
-        let(:assignee_user) { create(:user) }
-        let(:params) { { assignees: [assignee_user] } }
-
-        it 'skips adding todo for assignee without permission to read alert' do
-          expect { response }.not_to change(Todo, :count)
+        after do
+          alert.assignees = []
         end
 
-        context 'when assignee has read permission' do
-          before do
-            project.add_developer(assignee_user)
-          end
+        specify do
+          expect { response }.to change { alert.reload.assignees }.from([]).to(expected_assignees)
+          expect(response).to be_success
+        end
+      end
 
-          it 'adds a todo' do
-            response
+      let(:expected_assignees) { params[:assignees] }
 
-            expect(Todo.first.author).to eq(current_user)
-          end
+      context 'when the assignee is the current user' do
+        let(:params) { { assignees: [current_user] } }
+
+        it_behaves_like 'successful assignment'
+      end
+
+      context 'when the assignee has read permissions' do
+        let(:params) { { assignees: [other_user_with_permissions] } }
+
+        it_behaves_like 'successful assignment'
+      end
+
+      context 'when the assignee does not have read permissions' do
+        let(:params) { { assignees: [user_without_permissions] } }
+
+        it_behaves_like 'error response', 'Assignee has no permissions'
+      end
+
+      context 'when user is already assigned' do
+        let(:params) { { assignees: [user_with_permissions] } }
+
+        before do
+          alert.assignees << user_with_permissions
         end
 
-        context 'when current_user is nil' do
-          let(:current_user) { nil }
-
-          it 'skips adding todo if current_user is nil' do
-            project.add_developer(assignee_user)
-
-            expect { response }.not_to change(Todo, :count)
-          end
-        end
+        it_behaves_like 'does not add a system note'
+        # TODO: We should not add another todo in this scenario
+        it_behaves_like 'adds a todo'
       end
 
       context 'with multiple users included' do
         let(:params) { { assignees: [user_with_permissions, user_without_permissions] } }
+        let(:expected_assignees) { [user_with_permissions] }
 
-        it 'assigns the first permissioned user' do
-          expect { response }.to change { alert.reload.assignees }.from([]).to([user_with_permissions])
-          expect(response).to be_success
-        end
+        it_behaves_like 'successful assignment'
       end
     end
   end
diff --git a/spec/services/members/destroy_service_spec.rb b/spec/services/members/destroy_service_spec.rb
index 73ac0bd7716..5b01a538d1f 100644
--- a/spec/services/members/destroy_service_spec.rb
+++ b/spec/services/members/destroy_service_spec.rb
@@ -56,12 +56,23 @@ describe Members::DestroyService do
       expect(member_user.todos_pending_count).to be(1)
       expect(member_user.todos_done_count).to be(1)
 
-      described_class.new(current_user).execute(member, opts)
+      service = described_class.new(current_user)
+
+      if opts[:unassign_issuables]
+        expect(service).to receive(:enqueue_unassign_issuables).with(member)
+      end
+
+      service.execute(member, opts)
 
       expect(member_user.assigned_open_merge_requests_count).to be(0)
       expect(member_user.assigned_open_issues_count).to be(0)
       expect(member_user.todos_pending_count).to be(0)
       expect(member_user.todos_done_count).to be(0)
+
+      unless opts[:unassign_issuables]
+        expect(member_user.assigned_merge_requests.opened.count).to be(1)
+        expect(member_user.assigned_issues.opened.count).to be(1)
+      end
     end
   end
 
@@ -100,7 +111,7 @@ describe Members::DestroyService do
         it_behaves_like 'a service raising Gitlab::Access::AccessDeniedError'
 
         it_behaves_like 'a service destroying a member with access' do
-          let(:opts) { { skip_authorization: true } }
+          let(:opts) { { skip_authorization: true, unassign_issuables: true } }
         end
       end
 
@@ -114,7 +125,7 @@ describe Members::DestroyService do
         it_behaves_like 'a service raising Gitlab::Access::AccessDeniedError'
 
         it_behaves_like 'a service destroying a member with access' do
-          let(:opts) { { skip_authorization: true } }
+          let(:opts) { { skip_authorization: true, unassign_issuables: true } }
         end
       end
     end
@@ -133,6 +144,12 @@ describe Members::DestroyService do
         end
 
         it_behaves_like 'a service destroying a member with access'
+
+        context 'unassign issuables' do
+          it_behaves_like 'a service destroying a member with access' do
+            let(:opts) { { unassign_issuables: true } }
+          end
+        end
       end
 
       context 'with a group member' do
@@ -143,6 +160,12 @@ describe Members::DestroyService do
         end
 
         it_behaves_like 'a service destroying a member with access'
+
+        context 'unassign issuables' do
+          it_behaves_like 'a service destroying a member with access' do
+            let(:opts) { { unassign_issuables: true } }
+          end
+        end
       end
     end
   end
diff --git a/spec/services/members/unassign_issuables_service_spec.rb b/spec/services/members/unassign_issuables_service_spec.rb
new file mode 100644
index 00000000000..3f7ccb7bab3
--- /dev/null
+++ b/spec/services/members/unassign_issuables_service_spec.rb
@@ -0,0 +1,66 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Members::UnassignIssuablesService do
+  let_it_be(:group) { create(:group, :private) }
+  let_it_be(:project) { create(:project, group: group) }
+  let_it_be(:user, reload: true) { create(:user) }
+  let_it_be(:assigned_issue1, reload: true) { create(:issue, project: project, assignees: [user]) }
+  let_it_be(:assigned_issue2, reload: true) { create(:issue, project: project, assignees: [user]) }
+
+  let!(:assigned_merge_request1) { create(:merge_request, :simple, :closed, target_project: project, source_project: project, assignees: [user], title: 'Test1') }
+  let!(:assigned_merge_request2) { create(:merge_request, :simple, :opened, target_project: project, source_project: project, assignees: [user], title: 'Test2') }
+
+  describe '#execute' do
+    RSpec.shared_examples 'un-assigning issuables' do |issue_count, mr_count, open_issue_count, open_mr_count|
+      it 'removes issuable assignments', :aggregate_failures do
+        expect(user.assigned_issues.count).to eq(issue_count)
+        expect(user.assigned_merge_requests.count).to eq(mr_count)
+
+        subject
+
+        expect(user.assigned_issues.count).to eq(0)
+        expect(user.assigned_merge_requests.count).to eq(0)
+      end
+
+      it 'invalidates user cache', :aggregate_failures, :clean_gitlab_redis_cache do
+        expect(user.assigned_open_merge_requests_count).to eq(open_mr_count)
+        expect(user.assigned_open_issues_count).to eq(open_issue_count)
+
+        subject
+
+        expect(user.assigned_open_merge_requests_count).to eq(0)
+        expect(user.assigned_open_issues_count).to eq(0)
+      end
+    end
+
+    context 'when a user leaves a project' do
+      before do
+        project.add_maintainer(user)
+      end
+
+      subject { described_class.new(user, project).execute }
+
+      it_behaves_like 'un-assigning issuables', 2, 2, 2, 1
+    end
+
+    context 'when a user leaves a group' do
+      let_it_be(:project2) { create(:project, group: group) }
+
+      let_it_be(:assigned_issue3, reload: true) { create(:issue, project: project2, assignees: [user]) }
+      let_it_be(:assigned_issue4, reload: true) { create(:issue, project: project2, assignees: [user]) }
+
+      let!(:assigned_merge_request3) { create(:merge_request, :simple, :closed, target_project: project2, source_project: project2, assignees: [user], title: 'Test1') }
+      let!(:assigned_merge_request4) { create(:merge_request, :simple, :opened, target_project: project2, source_project: project2, assignees: [user], title: 'Test2') }
+
+      before do
+        group.add_maintainer(user)
+      end
+
+      subject { described_class.new(user, group).execute }
+
+      it_behaves_like 'un-assigning issuables', 4, 4, 4, 2
+    end
+  end
+end
diff --git a/spec/simplecov_env.rb b/spec/simplecov_env.rb
index d618c83d78e..efd0c07b1b2 100644
--- a/spec/simplecov_env.rb
+++ b/spec/simplecov_env.rb
@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 require 'simplecov'
+require 'simplecov-cobertura'
 require 'active_support/core_ext/numeric/time'
 require_relative '../lib/gitlab/utils'
 
@@ -12,10 +13,19 @@ module SimpleCovEnv
 
     configure_profile
     configure_job
+    configure_formatter
 
     SimpleCov.start
   end
 
+  def configure_formatter
+    SimpleCov.formatters = SimpleCov::Formatter::MultiFormatter.new([
+      SimpleCov::Formatter::SimpleFormatter,
+      SimpleCov::Formatter::HTMLFormatter,
+      SimpleCov::Formatter::CoberturaFormatter
+    ])
+  end
+
   def configure_job
     SimpleCov.configure do
       if ENV['CI_JOB_NAME']
diff --git a/spec/support/shared_examples/requests/api/resource_milestone_events_api_shared_examples.rb b/spec/support/shared_examples/requests/api/resource_milestone_events_api_shared_examples.rb
index bca51dab353..d21a9f419fd 100644
--- a/spec/support/shared_examples/requests/api/resource_milestone_events_api_shared_examples.rb
+++ b/spec/support/shared_examples/requests/api/resource_milestone_events_api_shared_examples.rb
@@ -16,6 +16,29 @@ RSpec.shared_examples 'resource_milestone_events API' do |parent_type, eventable
       expect(json_response.first['action']).to eq(event.action)
     end
 
+    context 'when there is an event with a milestone which is not visible for requesting user' do
+      let!(:private_project) { create(:project, :private) }
+      let!(:private_milestone) { create(:milestone, project: private_project) }
+
+      let!(:other_user) { create(:user) }
+
+      it 'returns the expected events' do
+        create_event(private_milestone)
+
+        get api("/#{parent_type}/#{parent.id}/#{eventable_type}/#{eventable[id_name]}/resource_milestone_events", other_user)
+
+        expect(response).to have_gitlab_http_status(:ok)
+        expect(response).to include_pagination_headers
+        expect(response.headers['X-Total']).to eq('1')
+        expect(json_response).to be_an Array
+        expect(json_response.size).to eq(1)
+
+        expect(json_response.first['id']).to eq(event.id)
+        expect(json_response.first['milestone']['id']).to eq(event.milestone.id)
+        expect(json_response.first['action']).to eq(event.action)
+      end
+    end
+
     it "returns a 404 error when eventable id not found" do
       get api("/#{parent_type}/#{parent.id}/#{eventable_type}/#{non_existing_record_id}/resource_milestone_events", user)
 
@@ -60,6 +83,20 @@ RSpec.shared_examples 'resource_milestone_events API' do |parent_type, eventable
     end
   end
 
+  describe 'pagination' do
+    let!(:event1) { create_event(milestone) }
+    let!(:event2) { create_event(milestone) }
+
+    # https://gitlab.com/gitlab-org/gitlab/-/issues/220192
+    it 'returns the second page' do
+      get api("/#{parent_type}/#{parent.id}/#{eventable_type}/#{eventable[id_name]}/resource_milestone_events?page=2&per_page=1", user)
+
+      expect(response).to have_gitlab_http_status(:ok)
+      expect(json_response.count).to eq(1)
+      expect(json_response.first['id']).to eq(event2.id)
+    end
+  end
+
   def create_event(milestone, action: :add)
     create(:resource_milestone_event, eventable.class.name.underscore => eventable, milestone: milestone, action: action)
   end
diff --git a/spec/workers/members_destroyer/unassign_issuables_worker_spec.rb b/spec/workers/members_destroyer/unassign_issuables_worker_spec.rb
new file mode 100644
index 00000000000..2a325be1225
--- /dev/null
+++ b/spec/workers/members_destroyer/unassign_issuables_worker_spec.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe MembersDestroyer::UnassignIssuablesWorker do
+  let_it_be(:group) { create(:group, :private) }
+  let_it_be(:user, reload: true) { create(:user) }
+
+  context 'when unsupported membership source entity' do
+    it 'exits early and logs error' do
+      params = { message: "SomeEntity is not a supported entity.", entity_type: 'SomeEntity', entity_id: group.id, user_id: user.id }
+
+      expect(Sidekiq.logger).to receive(:error).with(params)
+
+      described_class.new.perform(user.id, group.id, 'SomeEntity')
+    end
+  end
+
+  it "calls the Members::UnassignIssuablesService with the params it was given" do
+    service = double
+
+    expect(Members::UnassignIssuablesService).to receive(:new).with(user, group).and_return(service)
+    expect(service).to receive(:execute)
+
+    described_class.new.perform(user.id, group.id, 'Group')
+  end
+end
diff --git a/yarn.lock b/yarn.lock
index 6dc60a5a81f..fe31bbf292c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -843,10 +843,10 @@
     eslint-plugin-vue "^6.2.1"
     vue-eslint-parser "^7.0.0"
 
-"@gitlab/svgs@1.140.0":
-  version "1.140.0"
-  resolved "https://registry.yarnpkg.com/@gitlab/svgs/-/svgs-1.140.0.tgz#593f1f65b0df57c3399fcfb9f472f59aa64da074"
-  integrity sha512-6gANJGi2QkpvOgFTMcY3SIwEqhO69i6R3jU4BSskkVziwDdAWxGonln22a4Iu//Iv0NrsFDpAA0jIVfnJzw0iA==
+"@gitlab/svgs@1.141.0":
+  version "1.141.0"
+  resolved "https://registry.yarnpkg.com/@gitlab/svgs/-/svgs-1.141.0.tgz#0d6c03511180669538be5c63a96b2ae28840bbf4"
+  integrity sha512-6k4HA0jVGMb/47bqcflSdpLGpo0rN2yd5K2X39LVQxukrg56PdZQvFPxT2UDOgChLstEtmN/iJTZuXqpeVOg+g==
 
 "@gitlab/ui@17.2.0":
   version "17.2.0"