Is there any good way to test android app push?

as mentioned in the question, is there any method or tool to test google"s fcm app push in the test environment that can detect the push of a large number of devices

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b39713-2c1ab.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b39713-2c1ab.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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