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4f947c2877
notebook/IPython/testing/iptest.py
Thomas Kluyver 4f947c2877 Make separate function to monkeypatch Xunit.
2012-02-09 20:20:19 +00:00

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# -*- coding: utf-8 -*-
"""IPython Test Suite Runner.
This module provides a main entry point to a user script to test IPython
itself from the command line. There are two ways of running this script:
1. With the syntax `iptest all`. This runs our entire test suite by
calling this script (with different arguments) recursively. This
causes modules and package to be tested in different processes, using nose
or trial where appropriate.
2. With the regular nose syntax, like `iptest -vvs IPython`. In this form
the script simply calls nose, but with special command line flags and
plugins loaded.
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2009-2011 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
# Stdlib
import os
import os.path as path
import signal
import sys
import subprocess
import tempfile
import time
import warnings
# Note: monkeypatch!
# We need to monkeypatch a small problem in nose itself first, before importing
# it for actual use. This should get into nose upstream, but its release cycle
# is slow and we need it for our parametric tests to work correctly.
from IPython.testing import nosepatch
# Now, proceed to import nose itself
import nose.plugins.builtin
from nose.plugins.xunit import Xunit
from nose import SkipTest
from nose.core import TestProgram
# Our own imports
from IPython.utils.importstring import import_item
from IPython.utils.path import get_ipython_module_path
from IPython.utils.process import find_cmd, pycmd2argv
from IPython.utils.sysinfo import sys_info
from IPython.testing import globalipapp
from IPython.testing.plugin.ipdoctest import IPythonDoctest
from IPython.external.decorators import KnownFailure, knownfailureif
pjoin = path.join
#-----------------------------------------------------------------------------
# Globals
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Warnings control
#-----------------------------------------------------------------------------
# Twisted generates annoying warnings with Python 2.6, as will do other code
# that imports 'sets' as of today
warnings.filterwarnings('ignore', 'the sets module is deprecated',
DeprecationWarning )
# This one also comes from Twisted
warnings.filterwarnings('ignore', 'the sha module is deprecated',
DeprecationWarning)
# Wx on Fedora11 spits these out
warnings.filterwarnings('ignore', 'wxPython/wxWidgets release number mismatch',
UserWarning)
# ------------------------------------------------------------------------------
# Monkeypatch Xunit to count known failures as skipped.
# ------------------------------------------------------------------------------
def monkeypatch_xunit():
try:
knownfailureif(True)(lambda: None)()
except Exception as e:
KnownFailureTest = type(e)
def addError(self, test, err, capt=None):
if issubclass(err[0], KnownFailureTest):
err = (SkipTest,) + err[1:]
return self.orig_addError(test, err, capt)
Xunit.orig_addError = Xunit.addError
Xunit.addError = addError
#-----------------------------------------------------------------------------
# Logic for skipping doctests
#-----------------------------------------------------------------------------
def extract_version(mod):
return mod.__version__
def test_for(item, min_version=None, callback=extract_version):
"""Test to see if item is importable, and optionally check against a minimum
version.
If min_version is given, the default behavior is to check against the
`__version__` attribute of the item, but specifying `callback` allows you to
extract the value you are interested in. e.g::
In [1]: import sys
In [2]: from IPython.testing.iptest import test_for
In [3]: test_for('sys', (2,6), callback=lambda sys: sys.version_info)
Out[3]: True
"""
try:
check = import_item(item)
except (ImportError, RuntimeError):
# GTK reports Runtime error if it can't be initialized even if it's
# importable.
return False
else:
if min_version:
if callback:
# extra processing step to get version to compare
check = callback(check)
return check >= min_version
else:
return True
# Global dict where we can store information on what we have and what we don't
# have available at test run time
have = {}
have['curses'] = test_for('_curses')
have['matplotlib'] = test_for('matplotlib')
have['pexpect'] = test_for('IPython.external.pexpect')
have['pymongo'] = test_for('pymongo')
have['wx'] = test_for('wx')
have['wx.aui'] = test_for('wx.aui')
have['qt'] = test_for('IPython.external.qt')
have['sqlite3'] = test_for('sqlite3')
have['tornado'] = test_for('tornado.version_info', (2,1,0), callback=None)
if os.name == 'nt':
min_zmq = (2,1,7)
else:
min_zmq = (2,1,4)
def version_tuple(mod):
"turn '2.1.9' into (2,1,9), and '2.1dev' into (2,1,999)"
# turn 'dev' into 999, because Python3 rejects str-int comparisons
vs = mod.__version__.replace('dev', '.999')
tup = tuple([int(v) for v in vs.split('.') ])
return tup
have['zmq'] = test_for('zmq', min_zmq, version_tuple)
#-----------------------------------------------------------------------------
# Functions and classes
#-----------------------------------------------------------------------------
def report():
"""Return a string with a summary report of test-related variables."""
out = [ sys_info(), '\n']
avail = []
not_avail = []
for k, is_avail in have.items():
if is_avail:
avail.append(k)
else:
not_avail.append(k)
if avail:
out.append('\nTools and libraries available at test time:\n')
avail.sort()
out.append(' ' + ' '.join(avail)+'\n')
if not_avail:
out.append('\nTools and libraries NOT available at test time:\n')
not_avail.sort()
out.append(' ' + ' '.join(not_avail)+'\n')
return ''.join(out)
def make_exclude():
"""Make patterns of modules and packages to exclude from testing.
For the IPythonDoctest plugin, we need to exclude certain patterns that
cause testing problems. We should strive to minimize the number of
skipped modules, since this means untested code.
These modules and packages will NOT get scanned by nose at all for tests.
"""
# Simple utility to make IPython paths more readably, we need a lot of
# these below
ipjoin = lambda *paths: pjoin('IPython', *paths)
exclusions = [ipjoin('external'),
pjoin('IPython_doctest_plugin'),
ipjoin('quarantine'),
ipjoin('deathrow'),
ipjoin('testing', 'attic'),
# This guy is probably attic material
ipjoin('testing', 'mkdoctests'),
# Testing inputhook will need a lot of thought, to figure out
# how to have tests that don't lock up with the gui event
# loops in the picture
ipjoin('lib', 'inputhook'),
# Config files aren't really importable stand-alone
ipjoin('config', 'default'),
ipjoin('config', 'profile'),
]
if not have['sqlite3']:
exclusions.append(ipjoin('core', 'tests', 'test_history'))
exclusions.append(ipjoin('core', 'history'))
if not have['wx']:
exclusions.append(ipjoin('lib', 'inputhookwx'))
# We do this unconditionally, so that the test suite doesn't import
# gtk, changing the default encoding and masking some unicode bugs.
exclusions.append(ipjoin('lib', 'inputhookgtk'))
# These have to be skipped on win32 because the use echo, rm, cd, etc.
# See ticket https://github.com/ipython/ipython/issues/87
if sys.platform == 'win32':
exclusions.append(ipjoin('testing', 'plugin', 'test_exampleip'))
exclusions.append(ipjoin('testing', 'plugin', 'dtexample'))
if not have['pexpect']:
exclusions.extend([ipjoin('scripts', 'irunner'),
ipjoin('lib', 'irunner'),
ipjoin('lib', 'tests', 'test_irunner'),
ipjoin('frontend', 'terminal', 'console'),
])
if not have['zmq']:
exclusions.append(ipjoin('zmq'))
exclusions.append(ipjoin('frontend', 'qt'))
exclusions.append(ipjoin('frontend', 'html'))
exclusions.append(ipjoin('frontend', 'consoleapp.py'))
exclusions.append(ipjoin('frontend', 'terminal', 'console'))
exclusions.append(ipjoin('parallel'))
elif not have['qt']:
exclusions.append(ipjoin('frontend', 'qt'))
if not have['pymongo']:
exclusions.append(ipjoin('parallel', 'controller', 'mongodb'))
exclusions.append(ipjoin('parallel', 'tests', 'test_mongodb'))
if not have['matplotlib']:
exclusions.extend([ipjoin('core', 'pylabtools'),
ipjoin('core', 'tests', 'test_pylabtools')])
if not have['tornado']:
exclusions.append(ipjoin('frontend', 'html'))
# This is needed for the reg-exp to match on win32 in the ipdoctest plugin.
if sys.platform == 'win32':
exclusions = [s.replace('\\','\\\\') for s in exclusions]
return exclusions
class IPTester(object):
"""Call that calls iptest or trial in a subprocess.
"""
#: string, name of test runner that will be called
runner = None
#: list, parameters for test runner
params = None
#: list, arguments of system call to be made to call test runner
call_args = None
#: list, process ids of subprocesses we start (for cleanup)
pids = None
#: str, coverage xml output file
coverage_xml = None
def __init__(self, runner='iptest', params=None):
"""Create new test runner."""
p = os.path
if runner == 'iptest':
iptest_app = get_ipython_module_path('IPython.testing.iptest')
self.runner = pycmd2argv(iptest_app) + sys.argv[1:]
else:
raise Exception('Not a valid test runner: %s' % repr(runner))
if params is None:
params = []
if isinstance(params, str):
params = [params]
self.params = params
# Assemble call
self.call_args = self.runner+self.params
# Find the section we're testing (IPython.foo)
for sect in self.params:
if sect.startswith('IPython'): break
else:
raise ValueError("Section not found", self.params)
if '--with-xunit' in self.call_args:
self.call_args.append('--xunit-file=%s' % path.abspath(sect+'.xunit.xml'))
if '--with-xml-coverage' in self.call_args:
self.coverage_xml = path.abspath(sect+".coverage.xml")
self.call_args.remove('--with-xml-coverage')
self.call_args = ["coverage", "run", "--source="+sect] + self.call_args[1:]
# Store pids of anything we start to clean up on deletion, if possible
# (on posix only, since win32 has no os.kill)
self.pids = []
if sys.platform == 'win32':
def _run_cmd(self):
# On Windows, use os.system instead of subprocess.call, because I
# was having problems with subprocess and I just don't know enough
# about win32 to debug this reliably. Os.system may be the 'old
# fashioned' way to do it, but it works just fine. If someone
# later can clean this up that's fine, as long as the tests run
# reliably in win32.
# What types of problems are you having. They may be related to
# running Python in unboffered mode. BG.
return os.system(' '.join(self.call_args))
else:
def _run_cmd(self):
# print >> sys.stderr, '*** CMD:', ' '.join(self.call_args) # dbg
subp = subprocess.Popen(self.call_args)
self.pids.append(subp.pid)
# If this fails, the pid will be left in self.pids and cleaned up
# later, but if the wait call succeeds, then we can clear the
# stored pid.
retcode = subp.wait()
self.pids.pop()
return retcode
def run(self):
"""Run the stored commands"""
try:
retcode = self._run_cmd()
except:
import traceback
traceback.print_exc()
return 1 # signal failure
if self.coverage_xml:
subprocess.call(["coverage", "xml", "-o", self.coverage_xml])
return retcode
def __del__(self):
"""Cleanup on exit by killing any leftover processes."""
if not hasattr(os, 'kill'):
return
for pid in self.pids:
try:
print 'Cleaning stale PID:', pid
os.kill(pid, signal.SIGKILL)
except OSError:
# This is just a best effort, if we fail or the process was
# really gone, ignore it.
pass
def make_runners():
"""Define the top-level packages that need to be tested.
"""
# Packages to be tested via nose, that only depend on the stdlib
nose_pkg_names = ['config', 'core', 'extensions', 'frontend', 'lib',
'scripts', 'testing', 'utils', 'nbformat' ]
if have['zmq']:
nose_pkg_names.append('parallel')
# For debugging this code, only load quick stuff
#nose_pkg_names = ['core', 'extensions'] # dbg
# Make fully qualified package names prepending 'IPython.' to our name lists
nose_packages = ['IPython.%s' % m for m in nose_pkg_names ]
# Make runners
runners = [ (v, IPTester('iptest', params=v)) for v in nose_packages ]
return runners
def run_iptest():
"""Run the IPython test suite using nose.
This function is called when this script is **not** called with the form
`iptest all`. It simply calls nose with appropriate command line flags
and accepts all of the standard nose arguments.
"""
# Apply our monkeypatch to Xunit
if not hasattr(Xunit, 'orig_addError'):
monkeypatch_xunit()
warnings.filterwarnings('ignore',
'This will be removed soon. Use IPython.testing.util instead')
argv = sys.argv + [ '--detailed-errors', # extra info in tracebacks
# Loading ipdoctest causes problems with Twisted, but
# our test suite runner now separates things and runs
# all Twisted tests with trial.
'--with-ipdoctest',
'--ipdoctest-tests','--ipdoctest-extension=txt',
# We add --exe because of setuptools' imbecility (it
# blindly does chmod +x on ALL files). Nose does the
# right thing and it tries to avoid executables,
# setuptools unfortunately forces our hand here. This
# has been discussed on the distutils list and the
# setuptools devs refuse to fix this problem!
'--exe',
]
if nose.__version__ >= '0.11':
# I don't fully understand why we need this one, but depending on what
# directory the test suite is run from, if we don't give it, 0 tests
# get run. Specifically, if the test suite is run from the source dir
# with an argument (like 'iptest.py IPython.core', 0 tests are run,
# even if the same call done in this directory works fine). It appears
# that if the requested package is in the current dir, nose bails early
# by default. Since it's otherwise harmless, leave it in by default
# for nose >= 0.11, though unfortunately nose 0.10 doesn't support it.
argv.append('--traverse-namespace')
# use our plugin for doctesting. It will remove the standard doctest plugin
# if it finds it enabled
plugins = [IPythonDoctest(make_exclude()), KnownFailure()]
# We need a global ipython running in this process
globalipapp.start_ipython()
# Now nose can run
TestProgram(argv=argv, addplugins=plugins)
def run_iptestall():
"""Run the entire IPython test suite by calling nose and trial.
This function constructs :class:`IPTester` instances for all IPython
modules and package and then runs each of them. This causes the modules
and packages of IPython to be tested each in their own subprocess using
nose or twisted.trial appropriately.
"""
runners = make_runners()
# Run the test runners in a temporary dir so we can nuke it when finished
# to clean up any junk files left over by accident. This also makes it
# robust against being run in non-writeable directories by mistake, as the
# temp dir will always be user-writeable.
curdir = os.getcwdu()
testdir = tempfile.gettempdir()
os.chdir(testdir)
# Run all test runners, tracking execution time
failed = []
t_start = time.time()
try:
for (name, runner) in runners:
print '*'*70
print 'IPython test group:',name
res = runner.run()
if res:
failed.append( (name, runner) )
finally:
os.chdir(curdir)
t_end = time.time()
t_tests = t_end - t_start
nrunners = len(runners)
nfail = len(failed)
# summarize results
print
print '*'*70
print 'Test suite completed for system with the following information:'
print report()
print 'Ran %s test groups in %.3fs' % (nrunners, t_tests)
print
print 'Status:'
if not failed:
print 'OK'
else:
# If anything went wrong, point out what command to rerun manually to
# see the actual errors and individual summary
print 'ERROR - %s out of %s test groups failed.' % (nfail, nrunners)
for name, failed_runner in failed:
print '-'*40
print 'Runner failed:',name
print 'You may wish to rerun this one individually, with:'
print ' '.join(failed_runner.call_args)
print
# Ensure that our exit code indicates failure
sys.exit(1)
def main():
for arg in sys.argv[1:]:
if arg.startswith('IPython'):
# This is in-process
run_iptest()
else:
# This starts subprocesses
run_iptestall()
if __name__ == '__main__':
main()
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