From ef6d3ea9562909d9bace8b420153f2d4a0e12658 Mon Sep 17 00:00:00 2001
From: Carson Reinke <carson@reinke.co>
Date: Wed, 10 Aug 2016 09:50:26 -0400
Subject: [PATCH] Adding invoice payment creation

---
 lib/chargify_api_ares/resources/invoice.rb | 10 ++++++++++
 spec/resources/invoice_spec.rb             | 11 +++++++++++
 2 files changed, 21 insertions(+)

diff --git a/lib/chargify_api_ares/resources/invoice.rb b/lib/chargify_api_ares/resources/invoice.rb
index 604cc96..715cd63 100644
--- a/lib/chargify_api_ares/resources/invoice.rb
+++ b/lib/chargify_api_ares/resources/invoice.rb
@@ -1,6 +1,12 @@
 module Chargify
   class Invoice < Base
 
+    class Payment < Base
+      include ResponseHelper
+
+      self.prefix = '/invoices/:invoice_id/'
+    end
+
     def self.find_by_invoice_id(id)
       find(:first, {:params => {:id => id}})
     end
@@ -32,5 +38,9 @@ def self.find_pdf(scope, options = {})
       path = element_path(scope, prefix_options, query_options).gsub(/\.\w+$/, ".pdf")
       connection.get(path, headers).body
     end
+
+    def payment(attrs = {})
+      Payment.create(attrs.merge({:invoice_id => self.id}))
+    end
   end
 end
diff --git a/spec/resources/invoice_spec.rb b/spec/resources/invoice_spec.rb
index f4387c2..28d9934 100644
--- a/spec/resources/invoice_spec.rb
+++ b/spec/resources/invoice_spec.rb
@@ -114,3 +114,14 @@
     expect(invoice.attributes).to eql({ "id" => 99, "subscription_id" => 1, "state" => "partial" })
   end
 end
+
+describe Chargify::Invoice, '#payment', :fake_resource do
+  let(:invoice_id) {1}
+  let(:invoice) { Chargify::Invoice.create(:id => invoice_id) }
+  let(:invoice_payment) { Chargify::Invoice::Payment.create(:invoice_id => invoice_id, :amount_in_cents => 10000, :memo => 'lorem ipsum') }
+
+  it 'creates payment' do
+    payment = invoice.payment(:amount_in_cents => 10000, :memo => 'lorem ipsum')
+    payment.amount_in_cents.should == 10000
+  end
+end
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