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nosy - my commandline continuous integration tool from the Textura days
#!/usr/bin/env python
# nosy: commandline continuous integration for test driven development
#
# Copyright (C) 2008 Michael Steder <steder@gmail.com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
"""
Nosy - Script to monitor changes to *.py files and rerun tests
NOTE: Credit for the idea goes to Jeff Wrinkler. Today there are other versions of
this on PyPI (one called nosy and another called nosyd) but I didn't like the
config file required in both cases.
What makes this version different, and better IMHO, is that Nosy simply
acts as a passthrough to the underlying commandline test runner. You
don't have to learn how to use a new test tool and create a config file
you just replace the normal commandline with nosy and get on with your life.
So if you normally run nosetests like this::
$ nosetests --nocapture --with-coverage --cover-package=<mypackage> mypackage
You can simply run nosy instead of nosetests like this to have your tests
rerun whenever the code changes::
$ nosy --nocapture --with-coverage --cover-package=<mypackage> mypackage
Nosy currenly walks the working directory for *.py
files and only re-runs when *.py files change.
TODO:
- integrate building documentation
- run syntax checker (pyflakes / pylint)
- rename and publish on pypi?
"""
__version__ = 1.0
import fnmatch
import os
import subprocess
import stat
import sys
import time
TEST_RUNNER = "nosetests"
PATTERNS = ["*.py",]
def checksum_directory(directory):
"""
Walk directory structure and return simple checksum based on
file size and modified time.
"""
file_checksums = []
for dirpath, dirnames, filenames in os.walk(directory,
topdown=False,
onerror=None,
followlinks=False):
source_names = [name for pattern in PATTERNS
for name in filenames if fnmatch.fnmatch(name, pattern)]
for source_name in source_names:
source_path = os.path.join(dirpath, source_name)
try:
stats = os.stat(source_path)
except OSError:
# ignore temp files and files we don't
# have perms to access
continue
file_checksums.append(
stats[stat.ST_SIZE] + stats[stat.ST_MTIME])
return sum(file_checksums)
def main():
args = " ".join(sys.argv[1:])
command = "%s %s"%(TEST_RUNNER, args)
latest_checksum = checksum_directory(os.curdir)
print "Nosy starting with: %s"%(command)
print command
subprocess.call(command.split())
try:
while (True):
checksum = checksum_directory(os.curdir)
if checksum != latest_checksum:
print "Nosy detected a change and is rerunning tests with: %s"%(command)
latest_checksum = checksum
subprocess.call(command.split())
time.sleep(1)
except KeyboardInterrupt:
print "Exiting Nosy..."
if __name__=="__main__":
main()
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