function testUpdate_handleErrors()
{
$customer = Braintree_Customer::createNoValidate();
$firstToken = 'FIRST_PAYPALToken-' . strval(rand());
$http = new Braintree_HttpClientApi(Braintree_Configuration::$global);
$firstNonce = $http->nonceForPayPalAccount(array('paypal_account' => array('consent_code' => 'PAYPAL_CONSENT_CODE', 'token' => $firstToken)));
$firstPaypalAccount = Braintree_PaymentMethod::create(array('customerId' => $customer->id, 'paymentMethodNonce' => $firstNonce));
$this->assertTrue($firstPaypalAccount->success);
$secondToken = 'SECOND_PAYPALToken-' . strval(rand());
$http = new Braintree_HttpClientApi(Braintree_Configuration::$global);
$secondNonce = $http->nonceForPayPalAccount(array('paypal_account' => array('consent_code' => 'PAYPAL_CONSENT_CODE', 'token' => $secondToken)));
$secondPaypalAccount = Braintree_PaymentMethod::create(array('customerId' => $customer->id, 'paymentMethodNonce' => $secondNonce));
$this->assertTrue($secondPaypalAccount->success);
$updateResult = Braintree_PayPalAccount::update($firstToken, array('token' => $secondToken));
$this->assertFalse($updateResult->success);
$errors = $updateResult->errors->forKey('paypalAccount')->errors;
$this->assertEquals(Braintree_Error_Codes::PAYPAL_ACCOUNT_TOKEN_IS_IN_USE, $errors[0]->code);
}