Add tests to cover updated header

spec/helpers/tasklist_helper_spec.rb

@@ -1,10 +1,12 @@
 require "rails_helper"
 
 RSpec.describe TasklistHelper do
+  describe "with lettings" do
     let(:empty_lettings_log) { FactoryBot.create(:lettings_log) }
     let(:lettings_log) { FactoryBot.create(:lettings_log, :in_progress, needstype: 1) }
     let(:fake_2021_2022_form) { Form.new("spec/fixtures/forms/2021_2022.json") }
 
+    context "with 2021 2022 form" do
       before do
         allow(FormHandler.instance).to receive(:current_lettings_form).and_return(fake_2021_2022_form)
       end
@@ -81,3 +83,72 @@ RSpec.describe TasklistHelper do
         end
       end
     end
+  end
+
+  describe "#review_log_text" do
+    around do |example|
+      Timecop.freeze(now) do
+        Singleton.__init__(FormHandler)
+        example.run
+      end
+      Singleton.__init__(FormHandler)
+    end
+
+    context "with lettings log" do
+      context "when collection_period_open? == true" do
+        context "with 2023 deadline" do
+          let(:now) { Time.utc(2022, 6, 1) }
+          let(:lettings_log) { create(:lettings_log, :completed) }
+
+          it "returns relevant text" do
+            expect(review_log_text(lettings_log)).to eq(
+              "You can #{govuk_link_to 'review and make changes to this log', review_lettings_log_path(lettings_log)} until 1 July 2023.".html_safe,
+            )
+          end
+        end
+
+        context "with 2024 deadline" do
+          let(:now) { Time.utc(2023, 6, 20) }
+          let(:lettings_log) { create(:lettings_log, :completed, national: 18, waityear: 2) }
+
+          it "returns relevant text" do
+            expect(review_log_text(lettings_log)).to eq(
+              "You can #{govuk_link_to 'review and make changes to this log', review_lettings_log_path(lettings_log)} until 1 July 2024.".html_safe,
+            )
+          end
+        end
+      end
+
+      context "when collection_period_open? == false" do
+        let(:now) { Time.utc(2023, 7, 8) }
+        let(:lettings_log) { create(:lettings_log, :completed, startdate: Time.utc(2023, 2, 8)) }
+
+        it "returns relevant text" do
+          expect(review_log_text(lettings_log)).to eq("This log is from the 2022/2023 collection window, which is now closed.")
+        end
+      end
+    end
+
+    context "with sales log" do
+      context "when collection_period_open? == true" do
+        let(:now) { Time.utc(2022, 6, 1) }
+        let(:sales_log) { create(:sales_log, :completed) }
+
+        it "returns relevant text" do
+          expect(review_log_text(sales_log)).to eq(
+            "You can #{govuk_link_to 'review and make changes to this log', review_lettings_log_path(sales_log)} until 1 July 2023.".html_safe,
+          )
+        end
+      end
+
+      context "when collection_period_open? == false" do
+        let(:now) { Time.utc(2023, 7, 8) }
+        let(:sales_log) { create(:sales_log, :completed, saledate: Time.utc(2023, 2, 8)) }
+
+        it "returns relevant text" do
+          expect(review_log_text(sales_log)).to eq("This log is from the 2022/2023 collection window, which is now closed.")
+        end
+      end
+    end
+  end
+end