1 files changed, 31 insertions, 0 deletions

diff --git a/spec/services/discussions/capture_diff_note_position_service_spec.rb b/spec/services/discussions/capture_diff_note_position_service_spec.rb
new file mode 100644
index 00000000000..fced2eb7fce
--- /dev/null
+++ b/spec/services/discussions/capture_diff_note_position_service_spec.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Discussions::CaptureDiffNotePositionService do
+  context 'image note on diff' do
+    let!(:note) { create(:image_diff_note_on_merge_request) }
+
+    subject { described_class.new(note.noteable, ['files/images/any_image.png']) }
+
+    it 'is note affected by the service' do
+      expect(Gitlab::Diff::PositionTracer).not_to receive(:new)
+
+      expect(subject.execute(note.discussion)).to eq(nil)
+      expect(note.diff_note_positions).to be_empty
+    end
+  end
+
+  context 'when empty paths are passed as a param' do
+    let!(:note) { create(:diff_note_on_merge_request) }
+
+    subject { described_class.new(note.noteable, []) }
+
+    it 'does not calculate positons' do
+      expect(Gitlab::Diff::PositionTracer).not_to receive(:new)
+
+      expect(subject.execute(note.discussion)).to eq(nil)
+      expect(note.diff_note_positions).to be_empty
+    end
+  end
+end