Add support for the PromotionCode resource and APIs (#937)

* Codegen for openapi f71053e

* Add tests

.travis.yml

@@ -17,7 +17,7 @@ sudo: false
 env:
   global:
     # If changing this number, please also change it in `test/test_helper.rb`.
-    - STRIPE_MOCK_VERSION=0.94.0
+    - STRIPE_MOCK_VERSION=0.95.0
 
 cache:
   directories:

lib/stripe/object_types.rb

@@ -61,6 +61,7 @@ def self.object_names_to_classes
         Plan::OBJECT_NAME => Plan,
         Price::OBJECT_NAME => Price,
         Product::OBJECT_NAME => Product,
+        PromotionCode::OBJECT_NAME => PromotionCode,
         Radar::EarlyFraudWarning::OBJECT_NAME => Radar::EarlyFraudWarning,
         Radar::ValueList::OBJECT_NAME => Radar::ValueList,
         Radar::ValueListItem::OBJECT_NAME => Radar::ValueListItem,

lib/stripe/resources.rb

@@ -50,6 +50,7 @@
 require "stripe/resources/plan"
 require "stripe/resources/price"
 require "stripe/resources/product"
+require "stripe/resources/promotion_code"
 require "stripe/resources/radar/early_fraud_warning"
 require "stripe/resources/radar/value_list"
 require "stripe/resources/radar/value_list_item"

lib/stripe/resources/promotion_code.rb

@@ -0,0 +1,12 @@
+# File generated from our OpenAPI spec
+# frozen_string_literal: true
+
+module Stripe
+  class PromotionCode < APIResource
+    extend Stripe::APIOperations::Create
+    extend Stripe::APIOperations::List
+    include Stripe::APIOperations::Save
+
+    OBJECT_NAME = "promotion_code"
+  end
+end

test/stripe/promotion_code_test.rb

@@ -0,0 +1,42 @@
+# frozen_string_literal: true
+
+require ::File.expand_path("../test_helper", __dir__)
+
+module Stripe
+  class PromotionCodeTest < Test::Unit::TestCase
+    should "be listable" do
+      promotion_codes = Stripe::PromotionCode.list
+      assert_requested :get, "#{Stripe.api_base}/v1/promotion_codes"
+      assert promotion_codes.data.is_a?(Array)
+      assert promotion_codes.first.is_a?(Stripe::PromotionCode)
+    end
+
+    should "be retrievable" do
+      coupon = Stripe::PromotionCode.retrieve("PROMO_123")
+      assert_requested :get, "#{Stripe.api_base}/v1/promotion_codes/PROMO_123"
+      assert coupon.is_a?(Stripe::PromotionCode)
+    end
+
+    should "be creatable" do
+      coupon = Stripe::PromotionCode.create(
+        coupon: "co_123",
+        code: "MYCODE"
+      )
+      assert_requested :post, "#{Stripe.api_base}/v1/promotion_codes"
+      assert coupon.is_a?(Stripe::PromotionCode)
+    end
+
+    should "be saveable" do
+      coupon = Stripe::PromotionCode.retrieve("PROMO_123")
+      coupon.metadata["key"] = "value"
+      coupon.save
+      assert_requested :post, "#{Stripe.api_base}/v1/promotion_codes/#{coupon.id}"
+    end
+
+    should "be updateable" do
+      coupon = Stripe::PromotionCode.update("PROMO_123", metadata: { key: "value" })
+      assert_requested :post, "#{Stripe.api_base}/v1/promotion_codes/PROMO_123"
+      assert coupon.is_a?(Stripe::PromotionCode)
+    end
+  end
+end

test/stripe/subscription_item_test.rb

@@ -22,7 +22,7 @@ class SubscriptionItemTest < Test::Unit::TestCase
 
     should "be creatable" do
       item = Stripe::SubscriptionItem.create(
-        plan: "sapphire-elite",
+        price: "sapphire-elite",
         quantity: 3,
         subscription: "sub_123"
       )

test/test_helper.rb

@@ -16,7 +16,7 @@
 require ::File.expand_path("stripe_mock", __dir__)
 
 # If changing this number, please also change it in `.travis.yml`.
-MOCK_MINIMUM_VERSION = "0.94.0"
+MOCK_MINIMUM_VERSION = "0.95.0"
 MOCK_PORT = Stripe::StripeMock.start
 
 # Disable all real network connections except those that are outgoing to