Allow import/export of instance-level domain blocks/allows (#1754)

* Allow import/export of instance-level domain blocks/allows.
Fixes #15095

* Pacify circleci

* Address simple code review feedback

* Add headers to exported CSV

* Extract common import/export functionality to
AdminExportControllerConcern

* Add additional fields to instance-blocked domain export

* Address review feedback

* Split instance domain block/allow import/export into separate pages/controllers

* Address code review feedback

* Pacify DeepSource

* Work around Paperclip::HasAttachmentFile for Rails 6

* Fix deprecated API warning in export tests

* Remove after_commit workaround

1 files changed, 48 insertions, 0 deletions

diff --git a/spec/controllers/admin/domain_allows_controller_spec.rb b/spec/controllers/admin/domain_allows_controller_spec.rb
new file mode 100644
index 000000000..8bacdd3e4
--- /dev/null
+++ b/spec/controllers/admin/domain_allows_controller_spec.rb
@@ -0,0 +1,48 @@
+require 'rails_helper'
+
+RSpec.describe Admin::DomainAllowsController, type: :controller do
+  render_views
+
+  before do
+    sign_in Fabricate(:user, admin: true), scope: :user
+  end
+
+  describe 'GET #new' do
+    it 'assigns a new domain allow' do
+      get :new
+
+      expect(assigns(:domain_allow)).to be_instance_of(DomainAllow)
+      expect(response).to have_http_status(200)
+    end
+  end
+
+  describe 'POST #create' do
+    it 'blocks the domain when succeeded to save' do
+      post :create, params: { domain_allow: { domain: 'example.com' } }
+
+      expect(flash[:notice]).to eq I18n.t('admin.domain_allows.created_msg')
+      expect(response).to redirect_to(admin_instances_path)
+    end
+
+    it 'renders new when failed to save' do
+      Fabricate(:domain_allow, domain: 'example.com')
+
+      post :create, params: { domain_allow: { domain: 'example.com' } }
+
+      expect(response).to render_template :new
+    end
+  end
+
+  describe 'DELETE #destroy' do
+    it 'disallows the domain' do
+      service = double(call: true)
+      allow(UnallowDomainService).to receive(:new).and_return(service)
+      domain_allow = Fabricate(:domain_allow)
+      delete :destroy, params: { id: domain_allow.id }
+
+      expect(service).to have_received(:call).with(domain_allow)
+      expect(flash[:notice]).to eq I18n.t('admin.domain_allows.destroyed_msg')
+      expect(response).to redirect_to(admin_instances_path)
+    end
+  end
+end