Add handleErrorThrowsException option (to help with testing)

CRM/Core/Payment/MJWTrait.php

@@ -36,6 +36,11 @@ trait CRM_Core_Payment_MJWTrait {
    */
   private $paymentProcessorSubscriptionID;
 
+  /**
+   * @var bool Throw an exception in handleError.
+   */
+  public $handleErrorThrowsException = FALSE;
+
   /**
    * Get the billing email address
    *
@@ -354,6 +359,10 @@ trait CRM_Core_Payment_MJWTrait {
     $message = $errorCode . $errorMessage;
 
     Civi::log()->error($this->getPaymentTypeLabel() . ' Payment Error: ' . $message);
+    if ($this->handleErrorThrowsException) {
+      // We're in a test environment. Throw exception.
+      throw new \Exception('Exception thrown to avoid statusBounce because handleErrorThrowsException is set.' . $message);
+    }
 
     if ($bounceURL) {
       CRM_Core_Error::statusBounce($message, $bounceURL, $this->getPaymentTypeLabel());
@@ -370,6 +379,13 @@ trait CRM_Core_Payment_MJWTrait {
     return $this->_paymentProcessor['name'];
   }
 
+  /**
+   * Allow (phpunit test code) to configure handleError to throw an exception,
+   * thereby avoiding a statusBounce which is hard to deal with in tests.
+   */
+  public function setHandleErrorThrowsException(bool $value) {
+    $this->handleErrorThrowsException = $value;
+  }
   /**
    * Set the payment processor Transaction ID
    *

docs/releasenotes.md

@@ -17,6 +17,7 @@ Releases use the following numbering system:
 * IPN data can be array, object or string.
 * Clear cancel_date when setting a contribution back to pending.
 * Support CiviCRM multi-domain (add default domain to API calls).
+* Add `handleErrorThrowsException` option to MJWTrait (to help with testing).
 
 ## Release 0.9.12