Add gender identity 1 page

app/models/form/sales/pages/gender_identity_1.rb

@@ -0,0 +1,15 @@
+class Form::Sales::Pages::GenderIdentity1 < ::Form::Page
+  def initialize(id, hsh, subsection)
+    super
+    @id = "buyer_1_gender_identity"
+    @header = ""
+    @description = ""
+    @subsection = subsection
+  end
+
+  def questions
+    @questions ||= [
+      Form::Sales::Questions::GenderIdentity1.new(nil, nil, self),
+    ]
+  end
+end

spec/models/form/sales/pages/gender_identity_1_spec.rb

@@ -0,0 +1,33 @@
+require "rails_helper"
+
+RSpec.describe Form::Sales::Pages::GenderIdentity1, type: :model do
+  subject(:page) { described_class.new(page_id, page_definition, subsection) }
+
+  let(:page_id) { nil }
+  let(:page_definition) { nil }
+  let(:subsection) { instance_double(Form::Subsection) }
+
+  it "has correct subsection" do
+    expect(page.subsection).to eq(subsection)
+  end
+
+  it "has correct questions" do
+    expect(page.questions.map(&:id)).to eq(%w[sex1])
+  end
+
+  it "has the correct id" do
+    expect(page.id).to eq("buyer_1_gender_identity")
+  end
+
+  it "has the correct header" do
+    expect(page.header).to eq("")
+  end
+
+  it "has the correct description" do
+    expect(page.description).to eq("")
+  end
+
+  it "has correct depends_on" do
+    expect(page.depends_on).to be_nil
+  end
+end