Add more tests and format

spec/models/lettings_log_spec.rb

@@ -2921,6 +2921,24 @@ RSpec.describe LettingsLog do
         end
       end
     end
+
+    context "when filtering duplicate logs for organisation" do
+      let(:organisation) { create(:organisation) }
+      let(:log) { create(:lettings_log, :duplicate, owning_organisation: organisation) }
+      let!(:duplicate_log_same_owning_org) { create(:lettings_log, :duplicate, owning_organisation: organisation) }
+      let!(:duplicate_log_same_managing_org) { create(:lettings_log, :duplicate, managing_organisation: organisation) }
+      let!(:duplicate_log_different_org) { create(:lettings_log, :duplicate) }
+
+      it "returns all duplicate logs for given log" do
+        expect(described_class.duplicate_logs_for_organisation(organisation, log).count).to eq(2)
+      end
+
+      it "returns duplicate log" do
+        expect(described_class.duplicate_logs_for_organisation(organisation, log)).to include(duplicate_log_same_owning_org)
+        expect(described_class.duplicate_logs_for_organisation(organisation, log)).to include(duplicate_log_same_managing_org)
+        expect(described_class.duplicate_logs_for_organisation(organisation, log)).not_to include(duplicate_log_different_org)
+      end
+    end
   end
 
   describe "#retirement_age_for_person" do

spec/models/sales_log_spec.rb

@@ -251,6 +251,22 @@ RSpec.describe SalesLog, type: :model do
     end
   end
 
+  context "when filtering duplicate logs for organisation" do
+    let(:organisation) { create(:organisation) }
+    let(:log) { create(:sales_log, :duplicate, owning_organisation: organisation) }
+    let!(:duplicate_log_same_owning_org) { create(:sales_log, :duplicate, owning_organisation: organisation) }
+    let!(:duplicate_log_different_org) { create(:sales_log, :duplicate) }
+
+    it "returns all duplicate logs for given log" do
+      expect(described_class.duplicate_logs_for_organisation(organisation, log).count).to eq(1)
+    end
+
+    it "returns duplicate log" do
+      expect(described_class.duplicate_logs_for_organisation(organisation, log)).to include(duplicate_log_same_owning_org)
+      expect(described_class.duplicate_logs_for_organisation(organisation, log)).not_to include(duplicate_log_different_org)
+    end
+  end
+
   describe "derived variables" do
     let(:sales_log) { create(:sales_log, :completed) }