Add a test for uploading twins

This adds a feature test to cover the scenario where twins are uploaded
with the same last name, address and date of birth one after the other,
ensuring that the separate NHS numbers are shown in the duplicate
resolution screen.

Author: thomasleese

spec/features/import_child_records_with_twins_spec.rb

@@ -0,0 +1,129 @@
+# frozen_string_literal: true
+
+describe "Child record imports twins" do
+  around { |example| travel_to(Date.new(2024, 12, 1)) { example.run } }
+
+  scenario "User reviews and selects between duplicate records" do
+    stub_pds_get_nhs_number_to_return_a_patient
+    stub_pds_search_to_return_a_patient
+
+    given_i_am_signed_in
+    and_an_hpv_programme_is_underway
+    and_an_existing_patient_record_exists
+
+    when_i_visit_the_cohort_page_for_the_hpv_programme
+    and_i_start_adding_children_to_the_cohort
+    and_i_upload_a_file_with_duplicate_records
+    then_i_should_see_the_import_page_with_duplicate_records
+    then_i_wait_for_the_background_job_to_complete
+
+    when_i_review_the_duplicate_record
+    then_i_should_see_the_duplicate_record
+
+    when_i_choose_to_keep_both_records
+    and_i_confirm_my_selection
+    then_i_should_see_a_success_message
+    and_a_new_patient_record_should_be_created
+  end
+
+  def given_i_am_signed_in
+    @organisation = create(:organisation, :with_one_nurse)
+    sign_in @organisation.users.first
+  end
+
+  def and_an_hpv_programme_is_underway
+    programme = create(:programme, :hpv, organisations: [@organisation])
+
+    @school = create(:school, urn: "123456", organisation: @organisation)
+    @session =
+      create(
+        :session,
+        organisation: @organisation,
+        location: @school,
+        programmes: [programme]
+      )
+  end
+
+  def and_an_existing_patient_record_exists
+    @existing_patient =
+      create(
+        :patient,
+        given_name: "John",
+        family_name: "Doe",
+        nhs_number: "9000000009",
+        date_of_birth: Date.new(2010, 1, 3),
+        gender_code: :male,
+        address_line_1: "11 Downing Street",
+        address_line_2: "",
+        address_town: "London",
+        address_postcode: "SW1A 1AA",
+        school: @school,
+        organisation: @organisation,
+        session: @session
+      )
+  end
+
+  def when_i_visit_the_cohort_page_for_the_hpv_programme
+    visit "/"
+    click_link "Programmes", match: :first
+    click_link "HPV"
+    click_link "Cohorts"
+  end
+
+  def and_i_start_adding_children_to_the_cohort
+    click_link "Import child records"
+  end
+
+  def and_i_upload_a_file_with_duplicate_records
+    attach_file("cohort_import[csv]", "spec/fixtures/cohort_import/valid.csv")
+    click_on "Continue"
+  end
+
+  def then_i_should_see_the_import_page_with_duplicate_records
+    expect(page).to have_content("1 duplicate record needs review")
+  end
+
+  def then_i_wait_for_the_background_job_to_complete
+    perform_enqueued_jobs
+  end
+
+  def when_i_review_the_duplicate_record
+    click_on "Review DOE, John"
+  end
+
+  def then_i_should_see_the_duplicate_record
+    expect(page).to have_content("This record needs reviewing")
+    expect(page).to have_content("NHS number944 ‍930 ‍6168\nFull nameDOE, Mark")
+    expect(page).to have_content("NHS number900 ‍000 ‍0009\nFull nameDOE, John")
+  end
+
+  def when_i_choose_to_keep_both_records
+    choose "Keep both records"
+  end
+
+  def and_i_confirm_my_selection
+    click_on "Resolve duplicate"
+  end
+
+  def then_i_should_see_a_success_message
+    expect(page).to have_content("Record updated")
+  end
+
+  def and_a_new_patient_record_should_be_created
+    expect(Patient.count).to eq(2)
+
+    patient = Patient.last
+    expect(patient.address_postcode).to eq("SW1A 1AA")
+    expect(patient.date_of_birth).to eq(Date.new(2010, 1, 3))
+    expect(patient.family_name).to eq("Doe")
+    expect(patient.gender_code).to eq("male")
+    expect(patient.given_name).to eq("Mark")
+    expect(patient.nhs_number).to eq("9449306168")
+    expect(patient.pending_changes).to eq({})
+    expect(patient.school).to eq(@school)
+    expect(patient.sessions.count).to eq(2)
+
+    session = patient.sessions.first
+    expect(session).to eq(@session)
+  end
+end