Fix install/uninstall

tests/phpunit/CRM/Cdntaxreceipts/HookTest.php

 <?php
 
-use Civi\Test\HeadlessInterface;
-
 /**
- * Tips:
- *  - With HookInterface, you may implement CiviCRM hooks directly in the test class.
- *    Simply create corresponding functions (e.g. "hook_civicrm_post(...)" or similar).
- *  - With TransactionalInterface, any data changes made by setUp() or test****() functions will
- *    rollback automatically -- as long as you don't manipulate schema or truncate tables.
- *    If this test needs to manipulate schema or truncate tables, then either:
- *       a. Do all that using setupHeadless() and Civi\Test.
- *       b. Disable TransactionalInterface, and handle all setup/teardown yourself.
- *
  * @group headless
  */
-class CRM_Cdntaxreceipts_HookTest extends \CiviUnitTestCase implements HeadlessInterface {
-
-  public function setUpHeadless() {
-    // Civi\Test has many helpers, like install(), uninstall(), sql(), and sqlFile().
-    // See: https://docs.civicrm.org/dev/en/latest/testing/phpunit/#civitest
-    return \Civi\Test::headless()
-      ->installMe(__DIR__)
-      ->apply();
-  }
+class CRM_Cdntaxreceipts_HookTest extends CRM_Cdntaxreceipts_Base {
 
   /**
    * Test eligibleAmount