Autobisect
==========
[](https://community-tc.services.mozilla.com/api/github/v1/repository/MozillaSecurity/autobisect/master/latest)
[](https://github.com/psf/black)
[](https://codecov.io/gh/MozillaSecurity/autobisect)
Autobisect is a python module that automates bisection of Mozilla Firefox and SpiderMonkey bugs.
Installation
------------
```bash
git clone git@github.com:MozillaSecurity/autobisect.git
cd autobisect
poetry install
```
Usage
-----
Firefox bug bisection supports the following arguments:
```
python -m autobisect firefox --help
usage: __main__.py firefox [-h] [--log-level LOG_LEVEL] [--start START] [--end END] [--timeout TIMEOUT] [--repeat REPEAT] [--config CONFIG] [--find-fix] [--os {Android,Darwin,Linux,Windows}]
[--cpu {AMD64,ARM64,aarch64,arm,arm64,i686,x64,x86,x86_64}] [--central | --release | --beta | --esr-stable | --esr-next | --try | --autoland] [-d] [-a] [-t] [--fuzzing]
[--fuzzilli] [--coverage] [--valgrind] [--no-opt] [--launch-timeout LAUNCH_TIMEOUT] [-p PREFS] [--xvfb] [--ignore [IGNORE [IGNORE ...]]]
testcase
positional arguments:
testcase Path to testcase
optional arguments:
-h, --help show this help message and exit
--log-level LOG_LEVEL
Configure console logging. Options: DEBUG, INFO, WARN, ERROR, CRIT (default: INFO)
Boundary Arguments:
Accepts revision or build date in YYYY-MM-DD format)
--start START Start build id (default: earliest available build)
--end END End build id (default: latest available build)
Bisection Arguments:
--timeout TIMEOUT Maximum iteration time in seconds (default: 60)
--repeat REPEAT Number of times to evaluate testcase (per build)
--config CONFIG Path to optional config file
--find-fix Identify fix date
Target Arguments:
--os {Android,Darwin,Linux,Windows}
Specify the target system. (default: Linux)
--cpu {AMD64,ARM64,aarch64,arm,arm64,i686,x64,x86,x86_64}
Specify the target CPU. (default: x86_64)
Branch Arguments:
--central Download from mozilla-central (default)
--release Download from mozilla-release
--beta Download from mozilla-beta
--esr-stable Download from esr-stable
--esr-next Download from esr-next
--try Download from try
--autoland Download from autoland
Build Arguments:
-d, --debug Get debug builds w/ symbols (default=optimized).
-a, --asan Download AddressSanitizer builds.
-t, --tsan Download ThreadSanitizer builds.
--fuzzing Download --enable-fuzzing builds.
--fuzzilli Download --enable-js-fuzzilli builds.
--coverage Download --coverage builds.
--valgrind Download Valgrind builds.
--no-opt Download non-optimized builds.
Launcher Arguments:
--launch-timeout LAUNCH_TIMEOUT
Number of seconds to wait before LaunchError is raised (default: 300)
-p PREFS, --prefs PREFS
Optional prefs.js file to use
--xvfb Use Xvfb (Linux only)
Reporter Arguments:
--ignore [IGNORE [IGNORE ...]]
Space separated list of issue types to ignore. Valid options: log-limit memory timeout (default: log-limit memory timeout)
```
Simple Bisection
----------------
```
python -m autobisect firefox trigger.html --prefs prefs.js --asan --end 2017-11-14
```
By default, Autobisect will cache downloaded builds (up to 30GBs) to reduce bisection time. This behavior can be modified by supplying a custom configuration file in the following format:
```
[autobisect]
storage-path: /home/ubuntu/cached
persist: true
; size in MBs
persist-limit: 30000
```
Development
-----------
Autobisect includes a pre-commit hook for [black](https://github.com/psf/black) and [flake8](https://flake8.pycqa.org/en/latest/). To install the pre-commit hook, run the following.
```bash
pre-commit install
```
Furthermore, all tests should be executed via tox.
```bash
poetry run tox
```
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