Add new configuration setting to enable/disable HTML emails.24880-configurable-plaintext-emails

This new global setting will allow admins to specify if HTML emails should be sent or not,
this is basically useful when system administrators want to save some disk space by avoiding
emails in HTML format and using only the Plain Text version.

1 files changed, 34 insertions, 0 deletions

diff --git a/spec/mailers/notify_spec.rb b/spec/mailers/notify_spec.rb
index 932a5dc4862..0ad1cefbacc 100644
--- a/spec/mailers/notify_spec.rb
+++ b/spec/mailers/notify_spec.rb
@@ -1099,4 +1099,38 @@ describe Notify do
       is_expected.to have_body_text /#{diff_path}/
     end
   end
+
+  describe 'HTML emails setting' do
+    let(:project) { create(:project) }
+    let(:user) { create(:user) }
+    let(:multipart_mail) { Notify.project_was_moved_email(project.id, user.id, "gitlab/gitlab") }
+
+    context 'when disabled' do
+      it 'only sends the text template' do
+        stub_application_setting(html_emails_enabled: false)
+
+        EmailTemplateInterceptor.delivering_email(multipart_mail)
+
+        expect(multipart_mail).to have_part_with('text/plain')
+        expect(multipart_mail).not_to have_part_with('text/html')
+      end
+    end
+
+    context 'when enabled' do
+      it 'sends a multipart message' do
+        stub_application_setting(html_emails_enabled: true)
+
+        EmailTemplateInterceptor.delivering_email(multipart_mail)
+
+        expect(multipart_mail).to have_part_with('text/plain')
+        expect(multipart_mail).to have_part_with('text/html')
+      end
+    end
+
+    matcher :have_part_with do |expected|
+      match do |actual|
+        actual.body.parts.any? { |part| part.content_type.try(:match, %r(#{expected})) }
+      end
+    end
+  end
 end