Adds payment method test cases w/transaction fees

spec/system/consumer/split_checkout_spec.rb

@@ -38,7 +38,10 @@
                              name: "Shipping with Fee", description: "blue",
                              calculator: Calculator::FlatRate.new(preferred_amount: 4.56))
   }
-  let!(:payment_method) { create(:payment_method, distributors: [distributor]) }
+  let!(:check_without_fee) { create(:payment_method, distributors: [distributor], name: "Euro") }
+  let!(:check_with_fee) {
+    create(:payment_method, distributors: [distributor],
+                            calculator: Calculator::FlatRate.new(preferred_amount: 5.67), name: "Crypto") }
 
   before do
     allow(Flipper).to receive(:enabled?).with(:split_checkout).and_return(true)
@@ -226,15 +229,36 @@
 
     context "payment step" do
       let(:order) { create(:order_ready_for_payment, distributor: distributor) }
-      describe "selecting a Cash payment method" do
+
+      describe "selecting a free Cash payment method" do
 
-      before do
-        choose "Check"
+        before do
+          choose "Euro (Free)"
+        end
+
+        it "proceeds to the summary step" do
+          click_on "Next - Order summary"
+          expect(page).to have_content "Euro"
+          expect(page).to have_content "Back to Payment method"
+        end
       end
 
-        it "selects cash and proceeds to the summary step" do
+      describe "selecting a Cash payment method with fee" do
+
+        before do
+          choose "Crypto (#{with_currency(5.67)})"
+        end
+
+        it "proceeds to the summary step and includes the transaction fee in the order totals " do
           click_on "Next - Order summary"
-          expect(page).to have_content "Shopping @ #{distributor.name}"
+          expect(page).to have_content "Crypto"
+          expect(page).to have_selector "tr.total", text: with_currency(5.67)
+
+          #expect(order.total).to eq(10 + 5.67) # items + transaction fee
+          transaction_fee = Spree::Adjustment.where(label: "Transaction fee").pluck(:amount).first
+          order_total = order.total + transaction_fee
+          expect(page).to have_selector "#order_total", text: with_currency(order_total)
+          expect(page).to have_content "Back to Payment method"
         end
       end
     end