create question for buyer 2 nationality and associated test file

app/models/form/sales/pages/buyer2_nationality.rb

@@ -6,6 +6,6 @@ class Form::Sales::Pages::Buyer2Nationality < ::Form::Page
   end
 
   def questions
-    @questions ||= [Form::Sales::Questions::NationalityBuyer2.new(nil, nil, self)]
+    @questions ||= [Form::Sales::Questions::Buyer2Nationality.new(nil, nil, self)]
   end
 end

app/models/form/sales/questions/buyer2_nationality.rb

@@ -0,0 +1,25 @@
+class Form::Sales::Questions::Buyer2Nationality < ::Form::Question
+  def initialize(id, hsh, page)
+    super
+    @id = "nationalbuy2"
+    @check_answer_label = "Buyer 2’s nationality"
+    @header = "What is buyer 2’s nationality?"
+    @type = "radio"
+    @answer_options = ANSWER_OPTIONS
+    @check_answers_card_number = 2
+    @inferred_check_answers_value = [{
+      "condition" => {
+        "national" => 13,
+      },
+      "value" => "Prefers not to say",
+    }]
+  end
+
+  ANSWER_OPTIONS = {
+    "18" => { "value" => "United Kingdom" },
+    "17" => { "value" => "Republic of Ireland" },
+    "19" => { "value" => "European Economic Area (EEA), excluding ROI" },
+    "12" => { "value" => "Other" },
+    "13" => { "value" => "Buyer prefers not to say" },
+  }.freeze
+end

spec/models/form/sales/questions/buyer2_nationality_spec.rb

@@ -0,0 +1,63 @@
+require "rails_helper"
+
+RSpec.describe Form::Sales::Questions::Buyer2Nationality, 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 be page
+  end
+
+  it "has the correct id" do
+    expect(question.id).to eq "nationalbuy2"
+  end
+
+  it "has the correct header" do
+    expect(question.header).to eq "What is buyer 2’s nationality?"
+  end
+
+  it "has the correct check_answer_label" do
+    expect(question.check_answer_label).to eq "Buyer 2’s nationality"
+  end
+
+  it "has the correct type" do
+    expect(question.type).to eq "radio"
+  end
+
+  it "is not marked as derived" do
+    expect(question.derived?).to be false
+  end
+
+  it "has the correct hint" do
+    expect(question.hint_text).to be nil
+  end
+
+  it "has the correct answer_options" do
+    expect(question.answer_options).to eq({
+      "18" => { "value" => "United Kingdom" },
+      "17" => { "value" => "Republic of Ireland" },
+      "19" => { "value" => "European Economic Area (EEA), excluding ROI" },
+      "12" => { "value" => "Other" },
+      "13" => { "value" => "Buyer prefers not to say" },
+    })
+  end
+
+  it "has correct conditional for" do
+    expect(question.conditional_for).to be_nil
+  end
+
+  it "has correct hidden in check answers" do
+    expect(question.hidden_in_check_answers).to be_nil
+  end
+
+  it "has the correct check_answers_card_number" do
+    expect(question.check_answers_card_number).to be 2
+  end
+
+  it "has the correct inferred_check_answers_value" do
+    expect(question.inferred_check_answers_value).to eq([
+      { "condition" => { "national" => 13 }, "value" => "Prefers not to say" },
+    ])
+  end
+end