Remove DB cleanup in after(:context)

`set` has been removed so there shouldn't be any extra data left over
after specs are run. I also checked all `before(:all)` and
`before(:context)` calls to make sure those are cleaned up.

doc/development/testing_guide/best_practices.md

@@ -244,7 +244,11 @@ so we need to set some guidelines for their use going forward:
 In some cases, there is no need to recreate the same object for tests
 again for each example. For example, a project and a guest of that project
 is needed to test issues on the same project, one project and user will do for the entire file.
-This can be achieved by using
+
+As much as possible, do not implement this using `before(:all)` or `before(:context)`. If you do,
+you would need to manually clean up the data as those hooks run outside a database transaction.
+
+Instead, this can be achieved by using
 [`let_it_be`](https://test-prof.evilmartians.io/#/let_it_be) variables and the
 [`before_all`](https://test-prof.evilmartians.io/#/before_all) hook
 from the [`test-prof` gem](https://rubygems.org/gems/test-prof).

ee/spec/features/merge_request/user_merges_immediately_spec.rb

@@ -16,7 +16,7 @@ describe 'Merge requests > User merges immediately', :js do
     { test: { stage: 'test', script: 'echo', only: ['merge_requests'] } }
   end
 
-  before(:all) do
+  before_all do
     project.add_maintainer(user)
     project.update!(merge_pipelines_enabled: true)
     merge_request.all_pipelines.first.succeed!

ee/spec/features/projects/activity/user_sees_design_comment_spec.rb

@@ -19,7 +19,7 @@ describe 'Projects > Activity > User sees design comment', :js do
     "#{user.name} #{user.to_reference} closed issue #{issue.to_reference}"
   end
 
-  before(:all) do
+  before_all do
     project.add_developer(commenter)
     create(:event, :for_design, project: project, author: commenter, design: design)
     create(:closed_issue_event, project: project, author: user, target: issue)

ee/spec/models/design_management/action_spec.rb

@@ -15,7 +15,7 @@ describe DesignManagement::Action do
 
       let(:designs) { [design_a, design_b, design_c] }
 
-      before(:all) do
+      before_all do
         create(:design_version, designs: [design_a, design_b, design_c])
         create(:design_version, designs: [design_a, design_b])
         create(:design_version, designs: [design_a])

ee/spec/requests/api/issues_spec.rb

@@ -30,7 +30,7 @@ describe API::Issues, :mailer do
 
   let_it_be(:milestone) { create(:milestone, title: '1.0.0', project: project) }
 
-  before(:all) do
+  before_all do
     project.add_reporter(user)
   end
 

ee/spec/support/shared_examples/features/insights_shared_examples.rb

@@ -4,7 +4,7 @@ RSpec.shared_examples 'Insights page' do
   let_it_be(:user) { create(:user) }
 
   describe 'as a permitted user' do
-    before(:context) do
+    before_all do
       entity.add_maintainer(user)
     end
 

spec/finders/issues_finder_spec.rb

@@ -774,14 +774,16 @@ describe IssuesFinder do
   end
 
   describe '#row_count', :request_store do
+    let_it_be(:admin) { create(:admin) }
+
     it 'returns the number of rows for the default state' do
-      finder = described_class.new(user)
+      finder = described_class.new(admin)
 
       expect(finder.row_count).to eq(4)
     end
 
     it 'returns the number of rows for a given state' do
-      finder = described_class.new(user, state: 'closed')
+      finder = described_class.new(admin, state: 'closed')
 
       expect(finder.row_count).to be_zero
     end

spec/lib/gitlab/ci/status/composite_spec.rb

@@ -5,7 +5,7 @@ require 'spec_helper'
 describe Gitlab::Ci::Status::Composite do
   let_it_be(:pipeline) { create(:ci_pipeline) }
 
-  before(:all) do
+  before_all do
     @statuses = HasStatus::STATUSES_ENUM.map do |status, idx|
       [status, create(:ci_build, pipeline: pipeline, status: status, importing: true)]
     end.to_h

spec/lib/gitlab/import_export/group/tree_restorer_spec.rb

@@ -8,7 +8,7 @@ describe Gitlab::ImportExport::Group::TreeRestorer do
   let(:shared) { Gitlab::ImportExport::Shared.new(group) }
 
   describe 'restore group tree' do
-    before(:context) do
+    before_all do
       # Using an admin for import, so we can check assignment of existing members
       user = create(:admin, email: 'root@gitlabexample.com')
       create(:user, email: 'adriene.mcclure@gitlabexample.com')

spec/lib/gitlab/import_export/project/tree_restorer_spec.rb

@@ -8,7 +8,7 @@ describe Gitlab::ImportExport::Project::TreeRestorer do
   let(:shared) { project.import_export_shared }
 
   describe 'restore project tree' do
-    before(:context) do
+    before_all do
       # Using an admin for import, so we can check assignment of existing members
       @user = create(:admin)
       @existing_members = [

spec/rake_helper.rb

@@ -17,5 +17,7 @@ RSpec.configure do |config|
   # Reset stdout
   config.after(:all) do
     $stdout = STDOUT
+
+    delete_from_all_tables!
   end
 end

spec/requests/api/issues/get_project_issues_spec.rb

@@ -78,7 +78,7 @@ describe API::Issues do
            description: "closes #{issue.to_reference(private_mrs_project)}")
   end
 
-  before(:all) do
+  before_all do
     project.add_reporter(user)
     project.add_guest(guest)
     private_mrs_project.add_reporter(user)

spec/requests/api/issues/issues_spec.rb

@@ -61,7 +61,7 @@ describe API::Issues do
   let(:no_milestone_title) { 'None' }
   let(:any_milestone_title) { 'Any' }
 
-  before(:all) do
+  before_all do
     project.add_reporter(user)
     project.add_guest(guest)
     private_mrs_project.add_reporter(user)

spec/requests/api/issues/post_projects_issues_spec.rb

@@ -60,7 +60,7 @@ describe API::Issues do
   let(:no_milestone_title) { 'None' }
   let(:any_milestone_title) { 'Any' }
 
-  before(:all) do
+  before_all do
     project.add_reporter(user)
     project.add_guest(guest)
   end

spec/requests/api/issues/put_projects_issues_spec.rb

@@ -61,7 +61,7 @@ describe API::Issues do
   let(:no_milestone_title) { 'None' }
   let(:any_milestone_title) { 'Any' }
 
-  before(:all) do
+  before_all do
     project.add_reporter(user)
     project.add_guest(guest)
   end

spec/services/projects/participants_service_spec.rb

@@ -92,7 +92,7 @@ describe Projects::ParticipantsService do
 
       let_it_be(:group_ancestor_owner) { create(:user) }
 
-      before(:context) do
+      before_all do
         public_group.add_owner public_group_owner
         private_group.add_developer private_group_member
         public_project.add_maintainer public_project_maintainer
@@ -102,7 +102,7 @@ describe Projects::ParticipantsService do
       end
 
       context 'when the private group is invited to the public project' do
-        before(:context) do
+        before_all do
           create(:project_group_link, group: private_group, project: public_project)
         end
 

spec/support/database_cleaner.rb

@@ -11,10 +11,6 @@ RSpec.configure do |config|
     DatabaseCleaner.clean_with(:truncation)
   end
 
-  config.append_after(:context) do
-    delete_from_all_tables!
-  end
-
   config.append_after(:context, :migration) do
     delete_from_all_tables!
 

spec/support/shared_contexts/finders/issues_finder_shared_contexts.rb

@@ -28,19 +28,10 @@ RSpec.shared_context 'IssuesFinder#execute context' do
   let(:params) { {} }
   let(:issues) { described_class.new(search_user, params.reverse_merge(scope: scope, state: 'opened')).execute }
 
-  before(:context) do
+  before_all do
     project1.add_maintainer(user)
     project2.add_developer(user)
     project2.add_developer(user2)
     project3.add_developer(user)
-
-    issue1
-    issue2
-    issue3
-    issue4
-
-    award_emoji1
-    award_emoji2
-    award_emoji3
   end
 end

spec/support/shared_examples/finders/snippet_visibility_shared_examples.rb

@@ -3,11 +3,6 @@
 RSpec.shared_examples 'snippet visibility' do
   using RSpec::Parameterized::TableSyntax
 
-  # Make sure no snippets exist prior to running the test matrix
-  before(:context) do
-    DatabaseCleaner.clean_with(:truncation)
-  end
-
   let_it_be(:author) { create(:user) }
   let_it_be(:member) { create(:user) }
   let_it_be(:external) { create(:user, :external) }

spec/tasks/gitlab/backup_rake_spec.rb

@@ -3,7 +3,7 @@
 require 'spec_helper'
 require 'rake'
 
-describe 'gitlab:app namespace rake task' do
+describe 'gitlab:app namespace rake task', :delete do
   let(:enable_registry) { true }
 
   def tars_glob