bulk upload only permits one housing needs type

app/services/bulk_upload/lettings/row_parser.rb

@@ -150,6 +150,7 @@ class BulkUpload::Lettings::RowParser
   validate :validate_cannot_be_la_referral_if_general_needs
   validate :validate_leaving_reason_for_renewal
   validate :validate_lettings_type_matches_bulk_upload
+  validate :validate_only_one_housing_needs_type
 
   def valid?
     errors.clear
@@ -178,6 +179,14 @@ class BulkUpload::Lettings::RowParser
 
 private
 
+  def validate_only_one_housing_needs_type
+    if [field_55, field_56, field_57].compact.count.positive?
+      errors.add(:field_55, I18n.t("validations.household.housingneeds_type.only_one_option_permitted"))
+      errors.add(:field_56, I18n.t("validations.household.housingneeds_type.only_one_option_permitted"))
+      errors.add(:field_57, I18n.t("validations.household.housingneeds_type.only_one_option_permitted"))
+    end
+  end
+
   def validate_lettings_type_matches_bulk_upload
     if [1, 3, 5, 7, 9, 11].include?(field_1) && !bulk_upload.general_needs?
       errors.add(:field_1, I18n.t("validations.setup.lettype.supported_housing_mismatch"))

config/locales/en.yml

@@ -344,6 +344,8 @@ en:
           must_be_child: "Answer must be ‘child’ if the person is aged 16-19 and a student"
       housingneeds_a:
         one_or_two_choices: "You can only select one option or ‘other disabled access needs’ plus ‘wheelchair-accessible housing’, ‘wheelchair access to essential rooms’ or ‘level access housing’"
+      housingneeds_type:
+        only_one_option_permitted: "Only one disabled access need: fully wheelchair-accessible housing, wheelchair access to essential rooms or level access housing, can be selected"
       prevten:
         non_temp_accommodation: "Answer cannot be non-temporary accommodation as this is a re-let to a tenant who occupied the same property as temporary accommodation"
         over_20_foster_care: "Answer cannot be a children’s home or foster care as the lead tenant is 20 or older"

spec/services/bulk_upload/lettings/row_parser_spec.rb

@@ -344,6 +344,18 @@ RSpec.describe BulkUpload::Lettings::RowParser do
       end
     end
 
+    describe "#field_55, #field_56, #field_57" do
+      context "when more than one item selected" do
+        let(:attributes) { { bulk_upload:, field_55: "1", field_56: "1" } }
+
+        it "is not permitted" do
+          expect(parser.errors[:field_55]).to be_present
+          expect(parser.errors[:field_56]).to be_present
+          expect(parser.errors[:field_57]).to be_present
+        end
+      end
+    end
+
     describe "#field_78" do # referral
       context "when 3 ie PRP nominated by LA and owning org is LA" do
         let(:attributes) { { bulk_upload:, field_78: "3", field_111: owning_org.old_visible_id } }