1 files changed, 53 insertions, 0 deletions
diff --git a/spec/support/shared_examples/models/issuable_participants_shared_examples.rb b/spec/support/shared_examples/models/issuable_participants_shared_examples.rb
new file mode 100644
index 00000000000..c3eaae0ace2
--- /dev/null
+++ b/spec/support/shared_examples/models/issuable_participants_shared_examples.rb
@@ -0,0 +1,53 @@
+# frozen_string_literal: true
+
+RSpec.shared_examples 'issuable participants' do
+  context 'when resource parent is public' do
+    context 'and users are referenced on notes' do
+      let_it_be(:notes_author) { create(:user) }
+
+      let(:note_params) { params.merge(author: notes_author) }
+
+      before do
+        create(:note, note_params)
+      end
+
+      it 'includes the issue author' do
+        expect(issuable.participants).to include(issuable.author)
+      end
+
+      it 'includes the authors of the notes' do
+        expect(issuable.participants).to include(notes_author)
+      end
+
+      context 'and note is confidential' do
+        context 'and mentions users' do
+          let_it_be(:guest_1) { create(:user) }
+          let_it_be(:guest_2) { create(:user) }
+          let_it_be(:reporter) { create(:user) }
+
+          before do
+            issuable_parent.add_guest(guest_1)
+            issuable_parent.add_guest(guest_2)
+            issuable_parent.add_reporter(reporter)
+
+            confidential_note_params =
+              note_params.merge(
+                confidential: true,
+                note: "mentions #{guest_1.to_reference} and #{guest_2.to_reference} and #{reporter.to_reference}"
+              )
+
+            regular_note_params =
+              note_params.merge(note: "Mentions #{guest_2.to_reference}")
+
+            create(:note, confidential_note_params)
+            create(:note, regular_note_params)
+          end
+
+          it 'only includes users that can read the note as participants' do
+            expect(issuable.participants).to contain_exactly(issuable.author, notes_author, reporter, guest_2)
+          end
+        end
+      end
+    end
+  end
+end