unit tests for ProcessPaymentIntent

spec/services/process_payment_intent_spec.rb

@@ -0,0 +1,51 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe ProcessPaymentIntent do
+  let(:service) { described_class.new }
+
+  describe "processing a payment intent" do
+    let(:customer) { create(:customer) }
+    let(:order) { create(:order, customer: customer, distributor: customer.enterprise, state: "payment") }
+    let!(:payment) { create(
+      :payment,
+      cvv_response_message: "https://stripe.com/redirect",
+      response_code: "pi_123",
+      order: order,
+      state: "pending")
+    }
+
+    context "an invalid intent" do
+      let(:invalid_intent) { "invalid" }
+      let(:service) { ProcessPaymentIntent.new(invalid_intent, order) }
+
+      it "does not complete the payment" do
+        service.call!
+        expect(payment.reload.state).to eq("pending")
+      end
+    end
+
+    context "a valid intent" do
+      let(:valid_intent) { "pi_123" }
+      let(:service) { ProcessPaymentIntent.new(valid_intent, order) }
+
+      before do
+        allow(order).to receive(:deliver_order_confirmation_email)
+      end
+
+      it "completes the payment" do
+        service.call!
+        payment.reload
+        expect(payment.state).to eq("completed")
+        expect(payment.cvv_response_message).to be nil
+      end
+
+      it "completes the order" do
+        service.call!
+        expect(order.state).to eq("complete")
+        expect(order).to have_received(:deliver_order_confirmation_email)
+      end
+    end
+  end
+end