Add exemption certificate attribute to Account

Tests/Recurly/Account_Test.php

@@ -27,6 +27,7 @@ public function testGetAccount() {
     $this->assertEquals($account->created_at->getTimestamp(), 1304164800);
     $this->assertEquals($account->getHref(),'https://api.recurly.com/v2/accounts/abcdef1234567890');
     $this->assertTrue($account->tax_exempt);
+    $this->assertEquals($account->exemption_certificate, 'Some Certificate');
     $this->assertEquals($account->entity_use_code, 'I');
     $this->assertEquals($account->vat_location_valid, true);
     $this->assertEquals($account->cc_emails, 'cheryl.hines@example.com,richard.lewis@example.com');
@@ -99,6 +100,7 @@ public function testXml() {
     $account->first_name = 'Verena';
     $account->address->address1 = "123 Main St.";
     $account->tax_exempt = false;
+    $account->exemption_certificate = 'Some Certificate';
     $account->entity_use_code = 'I';
     $account->preferred_locale = 'en-US';
 
@@ -143,7 +145,7 @@ public function testXml() {
     $account->custom_fields[] = new Recurly_CustomField("serial_number", "4567-8900-1234");
 
     $this->assertEquals(
-      "<?xml version=\"1.0\"?>\n<account><account_code>act123</account_code><first_name>Verena</first_name><address><address1>123 Main St.</address1></address><tax_exempt>false</tax_exempt><entity_use_code>I</entity_use_code><shipping_addresses><shipping_address><address1>123 Main St.</address1><city>San Francisco</city><state>CA</state><zip>94110</zip><country>US</country><phone>555-555-5555</phone><email>verena@example.com</email><nickname>Work</nickname><first_name>Verena</first_name><last_name>Example</last_name><company>Recurly Inc.</company></shipping_address><shipping_address><address1>123 Dolores St.</address1><city>San Francisco</city><state>CA</state><zip>94110</zip><country>US</country><phone>555-555-5555</phone><email>verena@example.com</email><nickname>Home</nickname><first_name>Verena</first_name><last_name>Example</last_name></shipping_address></shipping_addresses><preferred_locale>en-US</preferred_locale><custom_fields><custom_field><name>serial_number</name><value>4567-8900-1234</value></custom_field></custom_fields><account_acquisition><cost_in_cents>599</cost_in_cents><currency>USD</currency><channel>marketing_content</channel><subchannel>pickle sticks blog post</subchannel><campaign>mailchimp67a904de95.0914d8f4b4</campaign></account_acquisition></account>\n",
+      "<?xml version=\"1.0\"?>\n<account><account_code>act123</account_code><first_name>Verena</first_name><address><address1>123 Main St.</address1></address><tax_exempt>false</tax_exempt><entity_use_code>I</entity_use_code><shipping_addresses><shipping_address><address1>123 Main St.</address1><city>San Francisco</city><state>CA</state><zip>94110</zip><country>US</country><phone>555-555-5555</phone><email>verena@example.com</email><nickname>Work</nickname><first_name>Verena</first_name><last_name>Example</last_name><company>Recurly Inc.</company></shipping_address><shipping_address><address1>123 Dolores St.</address1><city>San Francisco</city><state>CA</state><zip>94110</zip><country>US</country><phone>555-555-5555</phone><email>verena@example.com</email><nickname>Home</nickname><first_name>Verena</first_name><last_name>Example</last_name></shipping_address></shipping_addresses><preferred_locale>en-US</preferred_locale><custom_fields><custom_field><name>serial_number</name><value>4567-8900-1234</value></custom_field></custom_fields><account_acquisition><cost_in_cents>599</cost_in_cents><currency>USD</currency><channel>marketing_content</channel><subchannel>pickle sticks blog post</subchannel><campaign>mailchimp67a904de95.0914d8f4b4</campaign></account_acquisition><exemption_certificate>Some Certificate</exemption_certificate></account>\n",
       $account->xml()
     );
   }

Tests/fixtures/accounts/show-200.xml

@@ -18,6 +18,7 @@ Content-Type: application/xml; charset=utf-8
   <vat_number>ST-1937</vat_number>
   <entity_use_code>I</entity_use_code>
   <tax_exempt type="boolean">true</tax_exempt>
+  <exemption_certificate>Some Certificate</exemption_certificate>
   <preferred_locale>en-US</preferred_locale>
   <address>
     <address1>123 Main St.</address1>

lib/recurly/account.php

@@ -19,6 +19,7 @@
  * @property string $company_name The company name of the account.
  * @property string $vat_number The VAT number of the account (to avoid having the VAT applied).
  * @property boolean $tax_exempt The tax status of the account. true exempts tax on the account, false applies tax on the account.
+ * @property string $exemption_certificate Optional field for merchants taxing through Vertex. A string representing the exemption certificate. 1-30 characters in length.
  * @property Recurly_Address $address The nested address information of the account: address1, address2, city, state, zip, country, phone.
  * @property string $accept_language The ISO 639-1 language code from the user's browser, indicating their preferred language and locale.
  * @property string $hosted_login_token The unique token for automatically logging the account in to the hosted management pages. You may automatically log the user into their hosted management pages by directing the user to: https://:subdomain.recurly.com/account/:hosted_login_token.
@@ -105,7 +106,7 @@ protected function getWriteableAttributes() {
       'account_code', 'username', 'first_name', 'last_name', 'vat_number',
       'email', 'company_name', 'accept_language', 'billing_info', 'address',
       'tax_exempt', 'entity_use_code', 'cc_emails', 'shipping_addresses',
-      'preferred_locale', 'custom_fields', 'account_acquisition'
+      'preferred_locale', 'custom_fields', 'account_acquisition', 'exemption_certificate'
     );
   }
   protected function getRequiredAttributes() {