# xTimer hang test
  
  This is a runtime test for the RIOT xtimer implementation it prints text
  `Testing... (<percentage>)` (approximately) every `TEST_INTERVAL_MS` ms
  (milliseconds) for an overall test duration of `TEST_TIME_S` seconds.
  
  The test will print `[SUCCESS]` on completion, if it stops or hangs before,
  the test has failed.
  
  Please note (again), this is a runtime test to check if xtimer runs into a
  deadlock, it is not about clock stability nor accuracy of timing intervals.