Sync patients without addresses

app/transformers/api/v3/patient_transformer.rb

@@ -58,20 +58,23 @@ def from_nested_request(payload_attributes)
     end
 
     def to_nested_response(patient)
-      Api::V3::Transformer.to_response(patient)
+      response = Api::V3::Transformer.to_response(patient)
         .except("address_id",
           "registration_user_id",
           "test_data",
           "deleted_by_user_id")
         .merge(
-          "address" => Api::V3::Transformer.to_response(patient.address),
           "phone_numbers" => patient.phone_numbers.map do |phone_number|
             Api::V3::PatientPhoneNumberTransformer.to_response(phone_number)
           end,
           "business_identifiers" => patient.business_identifiers.map do |business_identifier|
             Api::V3::PatientBusinessIdentifierTransformer.to_response(business_identifier)
           end
         )
+      response.merge(
+        "address" => Api::V3::Transformer.to_response(patient.address),
+      ) unless patient.address.nil?
+      response
     end
   end
 end

spec/factories/patients.rb

@@ -29,6 +29,10 @@
     reminder_consent { Patient.reminder_consents[:granted] }
     medical_history { build(:medical_history, :hypertension_yes, patient_id: id, user: registration_user) }
 
+    trait(:without_address) do
+      association :address, strategy: :null
+    end
+
     trait(:with_dob) do
       date_of_birth { rand(18..80).years.ago }
       age { nil }

spec/transformers/api/v3/patient_transformer_spec.rb

@@ -41,5 +41,12 @@
       transformed_nested_patient = Api::V3::PatientTransformer.to_nested_response(patient)
       expect(transformed_nested_patient["registration_facility_id"]).to eq(patient.registration_facility.id)
     end
+
+    context "for patients without addresses" do
+      it "should be successful" do
+        patient_without_address = create(:patient, :without_address)
+        expect { Api::V3::PatientTransformer.to_nested_response(patient_without_address) }.not_to raise_error
+      end
+    end
   end
 end