Fix line_item tax sum in OrderTaxAdjustmentsFetcher

app/services/order_tax_adjustments_fetcher.rb

@@ -32,7 +32,7 @@ class OrderTaxAdjustmentsFetcher
   end
 
   def line_item_adjustments
-    table[:adjustable_id].eq(order.line_item_ids.join(','))
+    table[:adjustable_id].eq_any(order.line_item_ids)
       .and(table[:adjustable_type].eq('Spree::LineItem'))
   end
 

spec/services/order_tax_adjustments_fetcher_spec.rb

@@ -90,8 +90,7 @@ describe OrderTaxAdjustmentsFetcher do
       expect(subject.size).to eq(4)
     end
 
-    xit "contains tax on line_item" do
-      # This should be the sum of tax on all line items, but only returns tax for one.
+    it "contains tax on all line_items" do
       expect(subject[tax_rate10]).to eq(8.0)
     end