Add support for the PaymentIntent resource

This feature is gated so the tests are stubbed for now

.rubocop_todo.yml

@@ -38,7 +38,7 @@ Metrics/MethodLength:
 # Offense count: 1
 # Configuration parameters: CountComments.
 Metrics/ModuleLength:
-  Max: 307
+  Max: 350
 
 # Offense count: 6
 # Configuration parameters: CountKeywordArgs.

lib/stripe.rb

@@ -63,6 +63,7 @@
 require "stripe/login_link"
 require "stripe/order"
 require "stripe/order_return"
+require "stripe/payment_intent"
 require "stripe/payout"
 require "stripe/plan"
 require "stripe/product"

lib/stripe/payment_intent.rb

@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+module Stripe
+  class PaymentIntent < APIResource
+    extend Stripe::APIOperations::Create
+    include Stripe::APIOperations::Delete
+    extend Stripe::APIOperations::List
+    include Stripe::APIOperations::Save
+
+    OBJECT_NAME = "payment_intent".freeze
+
+    def self.resource_url
+      "/v1/payment_intents"
+    end
+
+    def cancel
+      resp, api_key = request(:post, resource_url + "/cancel")
+      initialize_from(resp.data, api_key)
+    end
+
+    def capture
+      resp, api_key = request(:post, resource_url + "/capture")
+      initialize_from(resp.data, api_key)
+    end
+
+    def confirm
+      resp, api_key = request(:post, resource_url + "/confirm")
+      initialize_from(resp.data, api_key)
+    end
+  end
+end

lib/stripe/util.rb

@@ -72,6 +72,7 @@ def self.object_classes
         LoginLink::OBJECT_NAME            => LoginLink,
         Order::OBJECT_NAME                => Order,
         OrderReturn::OBJECT_NAME          => OrderReturn,
+        PaymentIntent::OBJECT_NAME        => PaymentIntent,
         Payout::OBJECT_NAME               => Payout,
         Plan::OBJECT_NAME                 => Plan,
         Product::OBJECT_NAME              => Product,

test/stripe/payment_intent_test.rb

@@ -0,0 +1,96 @@
+# frozen_string_literal: true
+
+require File.expand_path("../../test_helper", __FILE__)
+
+module Stripe
+  TEST_RESOURCE_ID = "pi_123".freeze
+
+  class PaymentIntentTest < Test::Unit::TestCase
+    should "be listable" do
+      stub_request(:get, "#{Stripe.api_base}/v1/payment_intents")
+        .to_return(body: JSON.generate(object: "list", data: [{ id: "pi_123", object: "payment_intent" }]))
+
+      payment_intents = Stripe::PaymentIntent.list
+      assert_requested :get, "#{Stripe.api_base}/v1/payment_intents"
+      assert payment_intents.data.is_a?(Array)
+      assert payment_intents.data[0].is_a?(Stripe::PaymentIntent)
+    end
+
+    should "be retrievable" do
+      stub_request(:get, "#{Stripe.api_base}/v1/payment_intents/pi_123")
+        .to_return(body: JSON.generate(id: "pi_123", object: "payment_intent"))
+
+      payment_intent = Stripe::PaymentIntent.retrieve("pi_123")
+      assert_requested :get, "#{Stripe.api_base}/v1/payment_intents/pi_123"
+      assert payment_intent.is_a?(Stripe::PaymentIntent)
+    end
+
+    should "be creatable" do
+      stub_request(:post, "#{Stripe.api_base}/v1/payment_intents")
+        .to_return(body: JSON.generate(id: "pi_123", object: "payment_intent"))
+
+      payment_intent = Stripe::PaymentIntent.create
+      assert_requested :post, "#{Stripe.api_base}/v1/payment_intents"
+      assert payment_intent.is_a?(Stripe::PaymentIntent)
+    end
+
+    should "be saveable" do
+      stub_request(:post, "#{Stripe.api_base}/v1/payment_intents/pi_123")
+        .to_return(body: JSON.generate(id: "pi_123", object: "payment_intent"))
+
+      payment_intent = Stripe::PaymentIntent.construct_from(id: "pi_123", object: "payment_intent", metadata: {})
+      payment_intent.metadata["key"] = "value"
+      payment_intent.save
+      assert_requested :post, "#{Stripe.api_base}/v1/payment_intents/#{payment_intent.id}"
+    end
+
+    should "be updateable" do
+      stub_request(:post, "#{Stripe.api_base}/v1/payment_intents/pi_123")
+        .to_return(body: JSON.generate(id: "pi_123", object: "payment_intent"))
+
+      payment_intent = Stripe::PaymentIntent.update("pi_123", metadata: { foo: "bar" })
+
+      assert_requested :post, "#{Stripe.api_base}/v1/payment_intents/pi_123"
+      assert payment_intent.is_a?(Stripe::PaymentIntent)
+    end
+
+    context "#cancel" do
+      should "cancel a payment_intent" do
+        stub_request(:post, "#{Stripe.api_base}/v1/payment_intents/pi_123/cancel")
+          .to_return(body: JSON.generate(id: "pi_123", object: "payment_intent"))
+
+        payment_intent = Stripe::PaymentIntent.construct_from(id: "pi_123", object: "payment_intent")
+        payment_intent = payment_intent.cancel
+
+        assert_requested :post, "#{Stripe.api_base}/v1/payment_intents/pi_123/cancel"
+        assert payment_intent.is_a?(Stripe::PaymentIntent)
+      end
+    end
+
+    context "#capture" do
+      should "capture a payment_intent" do
+        stub_request(:post, "#{Stripe.api_base}/v1/payment_intents/pi_123/capture")
+          .to_return(body: JSON.generate(id: "pi_123", object: "payment_intent"))
+
+        payment_intent = Stripe::PaymentIntent.construct_from(id: "pi_123", object: "payment_intent")
+        payment_intent = payment_intent.capture
+
+        assert_requested :post, "#{Stripe.api_base}/v1/payment_intents/pi_123/capture"
+        assert payment_intent.is_a?(Stripe::PaymentIntent)
+      end
+    end
+
+    context "#confirm" do
+      should "confirm a payment_intent" do
+        stub_request(:post, "#{Stripe.api_base}/v1/payment_intents/pi_123/confirm")
+          .to_return(body: JSON.generate(id: "pi_123", object: "payment_intent"))
+
+        payment_intent = Stripe::PaymentIntent.construct_from(id: "pi_123", object: "payment_intent")
+        payment_intent = payment_intent.confirm
+
+        assert_requested :post, "#{Stripe.api_base}/v1/payment_intents/pi_123/confirm"
+        assert payment_intent.is_a?(Stripe::PaymentIntent)
+      end
+    end
+  end
+end