Elavon: Multi-currency support

CHANGELOG

@@ -10,6 +10,7 @@
 * Adyen: Add normalized hash of 3DS 2.0 data fields from web browsers [davidsantoso] #3207
 * Stripe: Do not attempt application fee refund if refund was not successful [jasonwebster] #3206
 * Elavon: Send transaction_currency if currency is provided [gcatlin] #3201
+* Elavon: Multi-currency support [jknipp] #3210
 
 == Version 1.93.0 (April 18, 2019)
 * Stripe: Do not consider a refund unsuccessful if only refunding the fee failed [jasonwebster] #3188

lib/active_merchant/billing/gateways/elavon.rb

@@ -183,7 +183,8 @@ def add_creditcard(form, creditcard)
       end
 
       def add_currency(form, money, options)
-        form[:transaction_currency] = options[:currency] if options[:currency]
+        currency = options[:currency] || currency(money)
+        form[:transaction_currency] = currency if currency && (@options[:multi_currency] || options[:multi_currency])
       end
 
       def add_token(form, token)

test/fixtures.yml

@@ -275,10 +275,17 @@ efsnet:
   password: Y
 
 # Provided for url update test
+
 elavon:
+  login: "009005"
+  user: "devportal"
+  password: "BDDZY5KOUDCNPV4L3821K7PETO4Z7TPYOJB06TYBI1CW771IDHXBVBP51HZ6ZANJ"
+
+elavon_multi_currency:
   login: "009006"
   user: "devportal"
   password: "XWJS3QTFCH40HW0QGHJKXAYADCTDH0TXXAKXAEZCGCCJ29CFNPCZT4KA9D5KQMDA"
+  multi_currency: true
 
 element:
   account_id: "1013963"

test/remote/gateways/remote_elavon_test.rb

@@ -3,6 +3,7 @@
 class RemoteElavonTest < Test::Unit::TestCase
   def setup
     @gateway = ElavonGateway.new(fixtures(:elavon))
+    @multi_currency_gateway = ElavonGateway.new(fixtures(:elavon_multi_currency))
 
     @credit_card = credit_card('4124939999999990')
     @bad_credit_card = credit_card('invalid')
@@ -205,8 +206,27 @@ def test_successful_purchase_with_custom_fields
     assert response.authorization
   end
 
-  def test_successful_purchase_with_currency
-    assert response = @gateway.purchase(@amount, @credit_card, @options.merge(currency: 'JPY'))
+  def test_failed_purchase_with_multi_currency_terminal_setting_disabled
+    assert response = @gateway.purchase(@amount, @credit_card, @options.merge(currency: 'USD', multi_currency: true))
+
+    assert_failure response
+    assert response.test?
+    assert_equal 'Transaction currency is not allowed for this terminal.  Your terminal must be setup with Multi currency', response.message
+    assert response.authorization
+  end
+
+  def test_successful_purchase_with_multi_currency_gateway_setting
+    assert response = @multi_currency_gateway.purchase(@amount, @credit_card, @options.merge(currency: 'JPY'))
+
+    assert_success response
+    assert response.test?
+    assert_equal 'APPROVAL', response.message
+    assert response.authorization
+  end
+
+  def test_successful_purchase_with_multi_currency_transaction_setting
+    @multi_currency_gateway.options.merge!(multi_currency: false)
+    assert response = @multi_currency_gateway.purchase(@amount, @credit_card, @options.merge(currency: 'JPY', multi_currency: true))
 
     assert_success response
     assert response.test?

test/unit/gateways/elavon_test.rb

@@ -10,6 +10,13 @@ def setup
                  :password => 'password'
                )
 
+    @multi_currency_gateway = ElavonGateway.new(
+                                :login => 'login',
+                                :user => 'user',
+                                :password => 'password',
+                                :multi_currency => true
+                              )
+
     @credit_card = credit_card
     @amount = 100
 
@@ -115,6 +122,26 @@ def test_successful_authorization_with_ip
     assert_success response
   end
 
+  def test_successful_purchase_with_multi_currency
+    response = stub_comms(@multi_currency_gateway) do
+      @multi_currency_gateway.purchase(@amount, @credit_card, @options.merge(currency: 'EUR'))
+    end.check_request do |endpoint, data, headers|
+      assert_match(/ssl_transaction_currency=EUR/, data)
+    end.respond_with(successful_purchase_with_multi_currency_response)
+
+    assert_success response
+  end
+
+  def test_successful_purchase_without_multi_currency
+    response = stub_comms do
+      @gateway.purchase(@amount, @credit_card, @options.merge(currency: 'EUR', multi_currency: false))
+    end.check_request do |endpoint, data, headers|
+      assert_no_match(/ssl_transaction_currency=EUR/, data)
+    end.respond_with(successful_purchase_response)
+
+    assert_success response
+  end
+
   def test_failed_capture
     @gateway.expects(:ssl_post).returns(failed_authorization_response)
     authorization = '123456INVALID;00000000-0000-0000-0000-00000000000'
@@ -298,6 +325,23 @@ def successful_purchase_response
     ssl_txn_time=08/07/2009 09:54:18 PM"
   end
 
+  def successful_purchase_with_multi_currency_response
+    "ssl_card_number=42********4242
+    ssl_exp_date=0910
+    ssl_amount=1.00
+    ssl_invoice_number=
+    ssl_description=Test Transaction
+    ssl_result=0
+    ssl_result_message=APPROVED
+    ssl_txn_id=00000000-0000-0000-0000-00000000000
+    ssl_approval_code=123456
+    ssl_cvv2_response=P
+    ssl_avs_response=X
+    ssl_account_balance=0.00
+    ssl_transaction_currency=EUR
+    ssl_txn_time=08/07/2009 09:54:18 PM"
+  end
+
   def successful_refund_response
     "ssl_card_number=42*****2222
     ssl_exp_date=