Add specs for ReportNotePolicy (#9592)

spec/policies/report_note_policy_spec.rb

+# frozen_string_literal: true
+
+require 'rails_helper'
+require 'pundit/rspec'
+
+RSpec.describe ReportNotePolicy do
+  let(:subject) { described_class }
+  let(:admin)   { Fabricate(:user, admin: true).account }
+  let(:john)    { Fabricate(:user).account }
+
+  permissions :create? do
+    context 'staff?' do
+      it 'permits' do
+        expect(subject).to permit(admin, ReportNote)
+      end
+    end
+
+    context '!staff?' do
+      it 'denies' do
+        expect(subject).to_not permit(john, ReportNote)
+      end
+    end
+  end
+
+  permissions :destroy? do
+    context 'admin?' do
+      it 'permit' do
+        expect(subject).to permit(admin, ReportNote)
+      end
+    end
+
+    context 'admin?' do
+      context 'owner?' do
+        it 'permit' do
+          report_note = Fabricate(:report_note, account: john)
+          expect(subject).to permit(john, report_note)
+        end
+      end
+
+      context '!owner?' do
+        it 'denies' do
+          report_note = Fabricate(:report_note)
+          expect(subject).to_not permit(john, report_note)
+        end
+      end
+    end
+  end
+end