For latest document, please refer to MDN https://developer.mozilla.org/en-US/Firefox_OS/Platform/Automated_testing/MTBF_tests

MTBF (Mean time between failures) is defined generally for mobile device stability testing (http://en.wikipedia.org/wiki/Mean_time_between_failures)

MTBF Driver is for performing long-term testing (over 100 hours) on Firefox OS devices automatically. It uses marionette as test runner and gaia ui test as base library, emulate user's behavior randomly while no crash and hang is permitted.

OSX or Linux-like operating system

After cloning repository, please execute setup.py and install all dependancies. Python virtual environment is recommended.

You can find command sample in shell/mtbf.sh MTBF_TIME=10h MTBF_CONF=conf/local.json mtbf --address=localhost:2828 --testvars=testvars.json tests/test_dummy_case.py

System variable:

MTBF_TIME=100h
Specify duration of test, for example, 10h = 10 hours,
500S = 500 seconds, 120m = 120 minutes. mixing is ok.
-- 

MTBF_CONF
Give a file path with general runnning parameters.
You can find a couple of examples in conf folder.

Options in config file

{
  "memory_report": false,
  "logcat": true,
  "overall_status": true,
  "b2g_status": true,
  "get_event": true,
  "rootdir": "tests/mtbf",
  "workspace": "/tmp/workspace",
  "manifest_prefix": "mtbf",
  "archive": "output",
  "runlist": "runlist/all.list",
  "level": 4
}

• memory report: Enable get_about_memory script during test run
• logcat: Trigger logcat periodically
• overall_status: Get android system info
• b2g_status: Get b2g specific system info
• get_event:
• rootdir: Indicate search path of test case bank
• workspace: A temporary directory to store running artifacts
• manifest_prefix: Not used in production
• archive: Not used in production
• runlist: Specify test cases to be randomly executed
• level: Robust magnitude, every round test runner will insert a dummy test case. level equals to number of active test cases inserted.

For example, 3 means in each round, 2 real test cases and 1 dummy test case scheduled. Level 0 means no test cases executed but dummy.
Level 5 is to disable dummy and run test in best effort.