Update discounted ownership guidance

app/views/form/guidance/_financial_calculations_discounted_ownership.html.erb

@@ -2,19 +2,28 @@
 <% grant_question_link = question_link("grant", log, current_user) %>
 <% value_question_link = question_link("value", log, current_user) %>
 <%= govuk_details(summary_text: "How the financial values are calculated") do %>
-  <p class="govuk-body">
-  The mortgage amount <%= question_link("mortgage", log, current_user) %>
-  <% if grant_question_link.blank? %>
-    and cash deposit <%= question_link("deposit", log, current_user) %>
-  <% else %>
-   cash deposit <%= question_link("deposit", log, current_user) %>
-   and grant <%= grant_question_link %>
-  <% end %>
-   added together must equal
-   the purchase price <%= value_question_link %>
-  <% if discount_question_link.present? %>
-    subtracted by the sum of the purchase price <%= value_question_link %>
-    multiplied by the discount <%= discount_question_link %>
-  <% end %>
+ <p class="govuk-body">
+    <% if log.mortgage_used? || log.mortgageused.blank? %>
+    <% mortgage_question_link = log.mortgageused.blank? ? question_link("mortgageused", log, current_user) : question_link("mortgage", log, current_user) %>
+      The mortgage amount <%= mortgage_question_link %><% if grant_question_link.blank? %>
+        and cash deposit <%= question_link("deposit", log, current_user) %>
+      <% else %>, cash deposit <%= question_link("deposit", log, current_user) %>
+        and grant <%= grant_question_link %>
+      <% end %>
+      added together must equal
+    <% else %>
+      <% if grant_question_link.blank? %>
+        Cash deposit <%= question_link("deposit", log, current_user) %> must equal
+      <% else %>
+      Cash deposit <%= question_link("deposit", log, current_user) %>
+      and grant <%= grant_question_link %>
+      added together must equal
+      <% end %>
+    <% end %>
+    the purchase price <%= value_question_link %>
+      <% if discount_question_link.present? %>
+        subtracted by the sum of the purchase price <%= value_question_link %>
+        multiplied by the discount <%= discount_question_link %>
+      <% end %>
    </p>
 <% end %>

spec/views/form/guidance/_financial_calculations_discounted_ownership_spec.rb

@@ -0,0 +1,85 @@
+require "rails_helper"
+
+RSpec.describe "form/guidance/_financial_calculations_discounted_ownership.html.erb" do
+  let(:log) { create(:sales_log) }
+
+  let(:fragment) { Capybara::Node::Simple.new(rendered) }
+
+  context "when mortgage used is not answered" do
+    let(:log) { create(:sales_log, :completed, ownershipsch: 2, type: 9, mortgageused: nil, discount: 30) }
+
+    it "renders correct content" do
+      render partial: "form/guidance/financial_calculations_discounted_ownership", locals: { log:, current_user: log.assigned_to }
+      expect(fragment).to have_content("The mortgage amount")
+      expect(fragment).to have_content("and cash deposit")
+      expect(fragment).to have_content("added together must equal")
+      expect(fragment).to have_content("the purchase price")
+      expect(fragment).to have_content("subtracted by the sum of the purchase price")
+      expect(fragment).to have_content("multiplied by the discount")
+    end
+  end
+
+  context "when mortgage used is no" do
+    let(:log) { create(:sales_log, :completed, ownershipsch: 2, type: 9, mortgageused: 2, discount: nil) }
+
+    it "renders correct content" do
+      render partial: "form/guidance/financial_calculations_discounted_ownership", locals: { log:, current_user: log.assigned_to }
+      expect(fragment).to have_content("Cash deposit")
+      expect(fragment).to have_content("must equal")
+      expect(fragment).to have_content("the purchase price")
+      expect(fragment).to have_content("subtracted by the sum of the purchase price")
+      expect(fragment).to have_content("multiplied by the discount")
+
+      expect(fragment).not_to have_content("The mortgage amount")
+      expect(fragment).not_to have_content("added together must equal")
+    end
+  end
+
+  context "when mortgage used is yes" do
+    let(:log) { create(:sales_log, :completed, ownershipsch: 2, type: 9, mortgageused: 1, mortgage: nil, discount: 30) }
+
+    it "renders correct content" do
+      render partial: "form/guidance/financial_calculations_discounted_ownership", locals: { log:, current_user: log.assigned_to }
+      expect(fragment).to have_content("The mortgage amount")
+      expect(fragment).to have_content("and cash deposit")
+      expect(fragment).to have_content("added together must equal")
+      expect(fragment).to have_content("the purchase price")
+      expect(fragment).to have_content("subtracted by the sum of the purchase price")
+      expect(fragment).to have_content("multiplied by the discount")
+    end
+  end
+
+  context "when grant is routed to" do
+    context "and morgage used" do
+      let(:log) { create(:sales_log, :completed, ownershipsch: 2, type: 22, mortgageused: 1, mortgage: nil, discount: 30) }
+
+      it "renders correct content" do
+        render partial: "form/guidance/financial_calculations_discounted_ownership", locals: { log:, current_user: log.assigned_to }
+        expect(fragment).to have_content("The mortgage amount")
+        expect(fragment).to have_content("cash deposit")
+        expect(fragment).to have_content("and grant")
+        expect(fragment).to have_content("added together must equal")
+        expect(fragment).to have_content("the purchase price")
+
+        expect(fragment).not_to have_content("subtracted by the sum of the purchase price")
+        expect(fragment).not_to have_content("multiplied by the discount")
+      end
+    end
+
+    context "and morgage not used" do
+      let(:log) { create(:sales_log, :completed, ownershipsch: 2, type: 22, mortgageused: 2, grant: nil) }
+
+      it "renders correct content" do
+        render partial: "form/guidance/financial_calculations_discounted_ownership", locals: { log:, current_user: log.assigned_to }
+        expect(fragment).to have_content("Cash deposit")
+        expect(fragment).to have_content("and grant")
+        expect(fragment).to have_content("added together must equal")
+        expect(fragment).to have_content("the purchase price")
+
+        expect(fragment).not_to have_content("The mortgage amount")
+        expect(fragment).not_to have_content("subtracted by the sum of the purchase price")
+        expect(fragment).not_to have_content("multiplied by the discount")
+      end
+    end
+  end
+end