Merge pull request #83 from conekta/feature/allow-amount-in-capture-c…

…harge

Allow capture amount to be set

lib/conekta/charge.rb

@@ -11,8 +11,10 @@ class Charge < Resource
                   :exchange_rate, :foreign_currency, :amount_in_foreign_currency,
                   :checkout_id, :checkout_order_count
 
-    def capture
-      custom_action(:post, 'capture')
+    # Usage: charge_reference.capture(2000)
+    def capture(params={})
+      params = { 'amount' => (params || self.amount) }
+      custom_action(:post, 'capture', params)
     end
 
     def refund(params=nil)

spec/conekta/1.0.0/charge_spec.rb

@@ -133,4 +133,20 @@
       )
     end
   end
+
+  context 'capturing charges' do
+    it 'captures an existing charge' do
+      amount_before_capture = 2000
+      amount_after_capture  = 1000
+      capture = { capture: false }
+       transaction = Conekta::Charge.create(
+        payment_method.merge(card).merge(capture)
+      )
+      expect(transaction.status).to eq('pre_authorized')
+      expect(transaction.amount).to be == amount_before_capture 
+      transaction.capture(1000)
+      expect(transaction.amount).to be == amount_after_capture
+      expect(transaction.status).to eq("paid")
+    end
+  end
 end