git-precommit.py

#!/usr/bin/python

import sys
import subprocess
import re
from distutils.util import strtobool

output = subprocess.check_output(['git', 'branch'])
lines = output.split('\n')
branch_name = ''
prog = re.compile('^\*')

for line in lines:
    if prog.match(line):
        branch_name = line.replace('* ','')

print "Currently on branch %s" % branch_name


print "* Running lint"

try:
    subprocess.check_output(['npm', 'run', 'lint'])
except subprocess.CalledProcessError as e:
    print "lint failed; exiting"
    print e
    exit(1)

print "* lint passed"


print "* Running tests"

try:
    subprocess.check_output(['npm', 'run', 'test-v1'])
except subprocess.CalledProcessError as e:
    print "v1 Tests failed"
    print e
    exit(1)

try:
    subprocess.check_output(['npm', 'run', 'test-v2'])
except subprocess.CalledProcessError as e:
    print "v2 Tests failed"
    print e
    exit(1)

print "* Tests passed"

if branch_name == "master":
    print "If you really want to commit to master, use git commit -n"
    exit(1)

print "* OK to commit"