Add tests

spec/helpers/merge_requests_helper_spec.rb

@@ -110,4 +110,52 @@ RSpec.describe MergeRequestsHelper do
       end
     end
   end
+
+  describe "when creating relationship outcomes content" do
+    let(:stock_owner1) { create(:organisation, name: "Stock owner 1") }
+    let(:stock_owner2) { create(:organisation, name: "Stock owner 2") }
+    let(:managing_agent1) { create(:organisation, name: "Managing agent 1") }
+    let(:managing_agent2) { create(:organisation, name: "Managing agent 2") }
+    let(:absorbing_organisation) { create(:organisation, name: "Absorbing Org") }
+    let(:merging_organisations) { create_list(:organisation, 2) { |org, i| org.name = "Dummy Org #{i + 1}" } }
+    let(:merge_request) { create(:merge_request, absorbing_organisation:, merging_organisations:) }
+
+    context "when there are no relationships" do
+      it "returns text stating there are no stock owners" do
+        expect(stock_owners_text(merge_request)).to eq("Absorbing Org, Dummy Org 1, and Dummy Org 2 have no stock owners.<br><br>")
+      end
+
+      it "returns text stating there are no managing agents" do
+        expect(managing_agent_text(merge_request)).to eq("Absorbing Org, Dummy Org 1, and Dummy Org 2 have no managing agents.<br><br>")
+      end
+    end
+
+    context "when there are stock owners" do
+      before do
+        create(:organisation_relationship, child_organisation: absorbing_organisation, parent_organisation: stock_owner1)
+        create(:organisation_relationship, child_organisation: merging_organisations.first, parent_organisation: stock_owner2)
+        create(:organisation_relationship, child_organisation: merging_organisations.first, parent_organisation: stock_owner1)
+      end
+
+      it "returns text stating the relationships" do
+        expect(stock_owners_text(merge_request)).to include("Some of the organisations merging have common stock owners.")
+        expect(stock_owners_text(merge_request)).to include("Dummy Org 2 has no stock owners.")
+        expect(stock_owners_text(merge_request)).to include("<a class=\"govuk-link\" target=\"_blank\" href=\"/organisations/#{merging_organisations.first.id}/stock-owners\">View all 2 Dummy Org 1 stock owners (opens in a new tab)</a>")
+      end
+    end
+
+    context "when there are managing agents" do
+      before do
+        create(:organisation_relationship, parent_organisation: absorbing_organisation, child_organisation: managing_agent1)
+        create(:organisation_relationship, parent_organisation: absorbing_organisation, child_organisation: managing_agent2)
+        create(:organisation_relationship, parent_organisation: merging_organisations.first, child_organisation: managing_agent2)
+      end
+
+      it "returns text stating the relationships" do
+        expect(managing_agent_text(merge_request)).to include("Some of the organisations merging have common managing agents.")
+        expect(managing_agent_text(merge_request)).to include("Dummy Org 2 has no managing agents.")
+        expect(managing_agent_text(merge_request)).to include("<a class=\"govuk-link\" target=\"_blank\" href=\"/organisations/#{merging_organisations.first.id}/managing-agents\">View the 1 Dummy Org 1 managing agent (opens in a new tab)</a>")
+      end
+    end
+  end
 end

spec/models/merge_request_spec.rb

@@ -397,4 +397,43 @@ RSpec.describe MergeRequest, type: :model do
       end
     end
   end
+
+  describe "relationship outcomes" do
+    let(:stock_owner1) { create(:organisation, name: "Stock owner 1") }
+    let(:stock_owner2) { create(:organisation, name: "Stock owner 2") }
+    let(:stock_owner3) { create(:organisation, name: "Stock owner 3") }
+    let(:managing_agent1) { create(:organisation, name: "Managing agent 1") }
+    let(:managing_agent2) { create(:organisation, name: "Managing agent 2") }
+    let(:absorbing_organisation) { create(:organisation, name: "Absorbing Org") }
+    let(:merging_organisations) { create_list(:organisation, 2) { |org, i| org.name = "Dummy Org #{i + 1}" } }
+    let(:merge_request) { create(:merge_request, absorbing_organisation:, merging_organisations:) }
+
+    before do
+      create(:organisation_relationship, child_organisation: absorbing_organisation, parent_organisation: stock_owner1)
+      create(:organisation_relationship, child_organisation: merging_organisations.first, parent_organisation: stock_owner2)
+      create(:organisation_relationship, child_organisation: merging_organisations.first, parent_organisation: stock_owner1)
+      create(:organisation_relationship, child_organisation: merging_organisations.first, parent_organisation: stock_owner3)
+      create(:organisation_relationship, parent_organisation: absorbing_organisation, child_organisation: managing_agent1)
+      create(:organisation_relationship, parent_organisation: absorbing_organisation, child_organisation: managing_agent2)
+      create(:organisation_relationship, parent_organisation: merging_organisations.first, child_organisation: managing_agent2)
+    end
+
+    describe "#total_stock_owners_after_merge" do
+      it "returns the correct count of stock owners after merge" do
+        expect(merge_request.total_stock_owners_after_merge).to eq(2)
+      end
+    end
+
+    describe "#total_managing_agents_after_merge"do
+      it "returns the correct count of managing agents after merge" do
+        expect(merge_request.total_managing_agents_after_merge).to eq(1)
+      end
+    end
+
+    describe "#total_stock_owners_managing_agents_label" do
+      it "returns the correct label" do
+        expect(merge_request.total_stock_owners_managing_agents_label).to eq("2 stock owners\n1 managing agent")
+      end
+    end
+  end
 end