Add spec for order confirmation view

spec/views/spree/shared/_order_details.html.haml_spec.rb

@@ -0,0 +1,24 @@
+require "spec_helper"
+
+describe "spree/shared/_order_details.html.haml" do
+  include AuthenticationWorkflow
+  helper Spree::BaseHelper
+
+  let(:order) { create(:completed_order_with_fees) }
+
+  before do
+    assign(:order, order)
+    allow(view).to receive_messages(
+      order: order,
+      current_order: order,
+    )
+  end
+
+  it "shows how the order is paid for" do
+    order.payments.first.payment_method.name = "Bartering"
+
+    render
+
+    expect(rendered).to have_content("Paying via: Bartering")
+  end
+end