Add wait before address fill in

I can't figure out why there needs to be a wait here but this test fails
because the address doesn't get filled in without this. The
fill_addresses_fields_with helper successfully focuses each field and
calls fill_in with the correct value but nothing is actually typed into
the field. Something is happening on page load that prevents these from
being filled in but visually it doesn't seem like there's anything to
check for so I resorted to just trying over and over and checking
whether the text actually gets typed in.

Author: AlistairNorman

templates/spec/support/solidus_starter_frontend/system/checkout_helpers.rb

@@ -55,11 +55,19 @@ def fill_addresses_fields_with(address)
           %w[firstname lastname]
         end
 
-        fields.each do |field|
-          fill_in "order_bill_address_attributes_#{field}", with: address.send(field).to_s
+        wait_time = 3
+        while wait_time > 0
+          fields.each do |field|
+            fill_in "order_bill_address_attributes_#{field}", with: address.send(field).to_s
+          end
+          select "United States of America", from: "order_bill_address_attributes_country_id"
+          select address.state.name.to_s, from: "order_bill_address_attributes_state_id"
+
+          break if find("#order_bill_address_attributes_#{fields.first}").value == address.send(fields.first).to_s
+
+          sleep 0.1
+          wait_time -= 0.1
         end
-        select "United States of America", from: "order_bill_address_attributes_country_id"
-        select address.state.name.to_s, from: "order_bill_address_attributes_state_id"
 
         check 'order_use_billing'
       end