1 files changed, 54 insertions, 0 deletions
diff --git a/spec/lib/gitlab/email/handler/create_note_handler_spec.rb b/spec/lib/gitlab/email/handler/create_note_handler_spec.rb
index e76a5d3fe32..c0ac40e3249 100644
--- a/spec/lib/gitlab/email/handler/create_note_handler_spec.rb
+++ b/spec/lib/gitlab/email/handler/create_note_handler_spec.rb
@@ -110,6 +110,60 @@ RSpec.describe Gitlab::Email::Handler::CreateNoteHandler do
     end
   end
 
+  context 'when email contains reply' do
+    shared_examples 'no content message' do
+      context 'when email contains quoted text only' do
+        let(:email_raw) { fixture_file('emails/no_content_with_quote.eml') }
+
+        it 'raises an EmptyEmailError' do
+          expect { receiver.execute }.to raise_error(Gitlab::Email::EmptyEmailError)
+        end
+      end
+
+      context 'when email contains quoted text and quick commands only' do
+        let(:email_raw) { fixture_file('emails/commands_only_reply.eml') }
+
+        it 'does not create a discussion' do
+          expect { receiver.execute }.not_to change { noteable.notes.count }
+        end
+      end
+    end
+
+    context 'when noteable is not an issue' do
+      let_it_be(:note) { create(:note_on_merge_request, project: project) }
+
+      it_behaves_like 'no content message'
+
+      context 'when email contains text, quoted text and quick commands' do
+        let(:email_raw) { fixture_file('emails/commands_in_reply.eml') }
+
+        it 'creates a discussion without appended reply' do
+          expect { receiver.execute }.to change { noteable.notes.count }.by(1)
+          new_note = noteable.notes.last
+
+          expect(new_note.note).not_to include('<details><summary>...</summary>')
+        end
+      end
+    end
+
+    context 'when noteable is an issue' do
+      let_it_be(:note) { create(:note_on_issue, project: project) }
+
+      it_behaves_like 'no content message'
+
+      context 'when email contains text, quoted text and quick commands' do
+        let(:email_raw) { fixture_file('emails/commands_in_reply.eml') }
+
+        it 'creates a discussion with appended reply' do
+          expect { receiver.execute }.to change { noteable.notes.count }.by(1)
+          new_note = noteable.notes.last
+
+          expect(new_note.note).to include('<details><summary>...</summary>')
+        end
+      end
+    end
+  end
+
   context 'when note is not a discussion' do
     let(:note) { create(:note_on_merge_request, project: project) }