#19541: Fixed unit test

Author: Stanislav Idolov

app/code/Magento/Cron/Test/Unit/Observer/ProcessCronQueueObserverTest.php

@@ -354,7 +354,8 @@ public function testDispatchExceptionTooLate()
      */
     public function testDispatchExceptionNoCallback()
     {
-        $exceptionMessage = 'No callbacks found';
+        $jobName = 'test_job1';
+        $exceptionMessage = 'No callbacks found for cron job ' . $jobName;
         $exception = new \Exception(__($exceptionMessage));
 
         $dateScheduledAt = date('Y-m-d H:i:s', $this->time - 86400);
@@ -383,7 +384,7 @@ public function testDispatchExceptionNoCallback()
 
         $this->loggerMock->expects($this->once())->method('critical')->with($exception);
 
-        $jobConfig = ['test_group' => ['test_job1' => ['instance' => 'Some_Class']]];
+        $jobConfig = ['test_group' => [$jobName => ['instance' => 'Some_Class']]];
 
         $this->_config->expects($this->exactly(2))->method('getJobs')->will($this->returnValue($jobConfig));