fb-bisect-test.py

#!/usr/bin/env python
import sys
import os
import shutil
import argparse

if len(sys.argv) == 1:
	program = os.path.basename(sys.argv[0])
	print("Sample usage:")
	print("$ git bisect start HEAD HEAD~10")
	print("$ " + program + " -b firefox-nightly tests/content/console/4658/issue4658.js")
	print("$ git bisect reset")
	print("")
	print("Pass -h for information on options.")
	sys.exit()

parser = argparse.ArgumentParser()
parser.add_argument('path', help="path to .js file")
parser.add_argument('-b', dest='binary', help="path to Firefox binary", default='firefox')
parser.add_argument('-u', dest='url', help="URL to firebug.html")
parser.add_argument('-x', dest='fbtestxpi', help="path to FBTest XPI")

args = parser.parse_args()
filename = args.path

if not filename.endswith('.js'):
	print("error: filename has to end with .js")
	sys.exit()

filename = os.path.realpath(filename)

def norm(path):
	return path.replace('/', os.sep)

sep = norm('/firebug/tests/content/')
ind = filename.rfind(sep)
if ind == -1:
	print("error: .js file must point to a test")
	sys.exit()

fbtestxpi = args.fbtestxpi
if fbtestxpi:
	fbtestxpi = os.path.realpath(fbtestxpi)
	if not os.access(fbtestxpi, os.R_OK):
		print("error: FBTest XPI does not exist")
		sys.exit()

firebugdir = filename[0:ind + len(norm('/firebug/'))]
basedir = filename[0:ind + len(sep)]

# set up a temporary profile
shutil.rmtree(basedir + 'temp-profile', ignore_errors=True)
os.mkdir(basedir + 'temp-profile')
os.mkdir(basedir + norm('temp-profile/extensions'))
with open(basedir + norm('temp-profile/extensions/firebug@software.joehewitt.com'), 'w') as f:
	f.write(firebugdir + norm('extension/'))
if fbtestxpi:
	shutil.copyfile(fbtestxpi, basedir + norm('temp-profile/extensions/fbtest@mozilla.com.xpi'))
else:
	with open(basedir + norm('temp-profile/extensions/fbtest@mozilla.com'), 'w') as f:
		f.write(firebugdir + norm('tests/FBTest/'))
with open(basedir + norm('temp-profile/prefs.js'), 'w') as f:
	f.write('user_pref("browser.shell.checkDefaultBrowser", false);\n')
	f.write('user_pref("browser.dom.window.dump.enabled", true);\n')
	f.write('user_pref("browser.startup.homepage_override.mstone", "ignore");\n')
	f.write('user_pref("browser.rights.3.shown", true);\n')
	f.write('user_pref("app.update.enabled", false);\n')
	f.write('user_pref("toolkit.telemetry.prompted", 2);\n')
	f.write('user_pref("toolkit.telemetry.rejected", true);\n')
	f.write('user_pref("extensions.autoDisableScopes", 14);\n')
	f.write('user_pref("extensions.firebug.showFirstRunPage", false);\n')

fxpath = args.binary
url = args.url or 'file://' + basedir + 'firebug.html'
testpath = filename[len(basedir):]

# cd into the toplevel directory so that git bisect works
os.chdir(firebugdir)

cmd = 'git bisect run sh -c "{} -no-remote -profile {}temp-profile -runFBTests \'{}#{}\' -quitAfterRun | grep PASS"'.format(fxpath, basedir, url, testpath)
os.system(cmd)

shutil.rmtree(basedir + 'temp-profile')