update question options for 23_24, create test file for question that didn't have one

app/models/form/lettings/pages/property_let_type.rb

@@ -6,6 +6,6 @@ class Form::Lettings::Pages::PropertyLetType < ::Form::Page
   end
 
   def questions
-    @questions ||= [Form::Lettings::Questions::Unitletas.new(nil, nil, self)]
+    @questions ||= [Form::Lettings::Questions::PreviousLetType.new(nil, nil, self)]
   end
 end

app/models/form/lettings/questions/previous_let_type.rb

@@ -1,4 +1,4 @@
-class Form::Lettings::Questions::Unitletas < ::Form::Question
+class Form::Lettings::Questions::PreviousLetType < ::Form::Question
   def initialize(id, hsh, page)
     super
     @id = "unitletas"
@@ -13,8 +13,11 @@ class Form::Lettings::Questions::Unitletas < ::Form::Question
   ANSWER_OPTIONS = {
     "1" => { "value" => "Social rent basis" },
     "2" => { "value" => "Affordable rent basis" },
-    "4" => { "value" => "Intermediate rent basis" },
+    "5" => { "value" => "A London Affordable Rent basis" },
+    "6" => { "value" => "A Rent to Buy basis" },
+    "7" => { "value" => "A London Living Rent basis" },
+    "8" => { "value" => "Another Intermediate Rent basis" },
     "divider" => { "value" => true },
     "3" => { "value" => "Don’t know" },
-  }.freeze
+  }
 end

spec/models/form/lettings/questions/previous_let_type_spec.rb

@@ -0,0 +1,48 @@
+require "rails_helper"
+
+RSpec.describe Form::Lettings::Questions::PreviousLetType, type: :model do
+  subject(:question) { described_class.new(nil, nil, page) }
+
+  let(:page) { instance_double(Form::Page) }
+
+  it "has correct page" do
+    expect(question.page).to eq page
+  end
+
+  it "has the correct id" do
+    expect(question.id).to eq "unitletas"
+  end
+
+  it "has the correct header" do
+    expect(question.header).to eq "What type was the property most recently let as?"
+  end
+
+  it "has the correct check_answer_label" do
+    expect(question.check_answer_label).to eq "Most recent let type"
+  end
+
+  it "has the correct type" do
+    expect(question.type).to eq "radio"
+  end
+
+  it "has the correct hint_text" do
+    expect(question.hint_text).to eq ""
+  end
+
+  it "is not marked as derived" do
+    expect(question.derived?).to be false
+  end
+
+  it "has the correct answer options" do
+    expect(question.answer_options).to eq({
+      "1" => { "value" => "Social rent basis" },
+      "2" => { "value" => "Affordable rent basis" },
+      "5" => { "value" => "A London Affordable Rent basis" },
+      "6" => { "value" => "A Rent to Buy basis" },
+      "7" => { "value" => "A London Living Rent basis" },
+      "8" => { "value" => "Another Intermediate Rent basis" },
+      "divider" => { "value" => true },
+      "3" => { "value" => "Don’t know" },
+    })
+  end
+end