public function testHookCron() {
$mockFunction = $this->mockMethod;
- $hook = $this->$mockFunction('stdClass', array('civicrm_cron'));
+ $hook = $this->getMockBuilder(stdClass::class)
+ ->setMethods(['civicrm_cron'])
+ ->getMock();
$hook->expects($this->once())
->method('civicrm_cron')
->with($this->isInstanceOf('CRM_Core_JobManager'));