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# -*- coding: utf-8 -*-
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"""IPython Test Suite Runner.
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This module provides a main entry point to a user script to test IPython
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itself from the command line. There are two ways of running this script:
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1. With the syntax `iptest all`. This runs our entire test suite by
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calling this script (with different arguments) recursively. This
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causes modules and package to be tested in different processes, using nose
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or trial where appropriate.
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2. With the regular nose syntax, like `iptest -vvs IPython`. In this form
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the script simply calls nose, but with special command line flags and
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plugins loaded.
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"""
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# Copyright (c) IPython Development Team.
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# Distributed under the terms of the Modified BSD License.
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import glob
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from io import BytesIO
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import os
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import os.path as path
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import sys
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from threading import Thread, Lock, Event
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import warnings
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import nose.plugins.builtin
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from nose.plugins.xunit import Xunit
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from nose import SkipTest
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from nose.core import TestProgram
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from nose.plugins import Plugin
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from nose.util import safe_str
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from IPython import version_info
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from IPython.utils.py3compat import bytes_to_str
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from IPython.utils.importstring import import_item
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from IPython.testing.plugin.ipdoctest import IPythonDoctest
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from IPython.external.decorators import KnownFailure, knownfailureif
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pjoin = path.join
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# Enable printing all warnings raise by IPython's modules
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warnings.filterwarnings('ignore', message='.*Matplotlib is building the font cache.*', category=UserWarning, module='.*')
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warnings.filterwarnings('error', message='.*', category=ResourceWarning, module='.*')
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warnings.filterwarnings('error', message=".*{'config': True}.*", category=DeprecationWarning, module='IPy.*')
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warnings.filterwarnings('default', message='.*', category=Warning, module='IPy.*')
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if version_info < (6,):
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# nose.tools renames all things from `camelCase` to `snake_case` which raise an
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# warning with the runner they also import from standard import library. (as of Dec 2015)
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# Ignore, let's revisit that in a couple of years for IPython 6.
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warnings.filterwarnings('ignore', message='.*Please use assertEqual instead', category=Warning, module='IPython.*')
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# ------------------------------------------------------------------------------
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# Monkeypatch Xunit to count known failures as skipped.
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# ------------------------------------------------------------------------------
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def monkeypatch_xunit():
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try:
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knownfailureif(True)(lambda: None)()
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except Exception as e:
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KnownFailureTest = type(e)
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def addError(self, test, err, capt=None):
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if issubclass(err[0], KnownFailureTest):
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err = (SkipTest,) + err[1:]
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return self.orig_addError(test, err, capt)
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Xunit.orig_addError = Xunit.addError
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Xunit.addError = addError
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#-----------------------------------------------------------------------------
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# Check which dependencies are installed and greater than minimum version.
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#-----------------------------------------------------------------------------
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def extract_version(mod):
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return mod.__version__
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def test_for(item, min_version=None, callback=extract_version):
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"""Test to see if item is importable, and optionally check against a minimum
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version.
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If min_version is given, the default behavior is to check against the
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`__version__` attribute of the item, but specifying `callback` allows you to
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extract the value you are interested in. e.g::
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In [1]: import sys
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In [2]: from IPython.testing.iptest import test_for
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In [3]: test_for('sys', (2,6), callback=lambda sys: sys.version_info)
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Out[3]: True
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"""
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try:
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check = import_item(item)
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except (ImportError, RuntimeError):
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# GTK reports Runtime error if it can't be initialized even if it's
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# importable.
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return False
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else:
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if min_version:
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if callback:
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# extra processing step to get version to compare
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check = callback(check)
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return check >= min_version
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else:
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return True
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# Global dict where we can store information on what we have and what we don't
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# have available at test run time
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have = {'matplotlib': test_for('matplotlib'),
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'pygments': test_for('pygments'),
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'sqlite3': test_for('sqlite3')}
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#-----------------------------------------------------------------------------
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# Test suite definitions
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#-----------------------------------------------------------------------------
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test_group_names = ['core',
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'extensions', 'lib', 'terminal', 'testing', 'utils',
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]
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class TestSection(object):
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def __init__(self, name, includes):
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self.name = name
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self.includes = includes
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self.excludes = []
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self.dependencies = []
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self.enabled = True
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def exclude(self, module):
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if not module.startswith('IPython'):
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module = self.includes[0] + "." + module
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self.excludes.append(module.replace('.', os.sep))
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def requires(self, *packages):
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self.dependencies.extend(packages)
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@property
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def will_run(self):
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return self.enabled and all(have[p] for p in self.dependencies)
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# Name -> (include, exclude, dependencies_met)
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test_sections = {n:TestSection(n, ['IPython.%s' % n]) for n in test_group_names}
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# Exclusions and dependencies
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# ---------------------------
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# core:
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sec = test_sections['core']
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if not have['sqlite3']:
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sec.exclude('tests.test_history')
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sec.exclude('history')
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if not have['matplotlib']:
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sec.exclude('pylabtools'),
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sec.exclude('tests.test_pylabtools')
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# lib:
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sec = test_sections['lib']
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sec.exclude('kernel')
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if not have['pygments']:
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sec.exclude('tests.test_lexers')
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# We do this unconditionally, so that the test suite doesn't import
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# gtk, changing the default encoding and masking some unicode bugs.
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sec.exclude('inputhookgtk')
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# We also do this unconditionally, because wx can interfere with Unix signals.
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# There are currently no tests for it anyway.
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sec.exclude('inputhookwx')
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# Testing inputhook will need a lot of thought, to figure out
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# how to have tests that don't lock up with the gui event
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# loops in the picture
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sec.exclude('inputhook')
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# testing:
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sec = test_sections['testing']
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# These have to be skipped on win32 because they use echo, rm, cd, etc.
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# See ticket https://github.com/ipython/ipython/issues/87
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if sys.platform == 'win32':
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sec.exclude('plugin.test_exampleip')
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sec.exclude('plugin.dtexample')
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# don't run jupyter_console tests found via shim
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test_sections['terminal'].exclude('console')
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# extensions:
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sec = test_sections['extensions']
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# This is deprecated in favour of rpy2
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sec.exclude('rmagic')
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# autoreload does some strange stuff, so move it to its own test section
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sec.exclude('autoreload')
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sec.exclude('tests.test_autoreload')
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test_sections['autoreload'] = TestSection('autoreload',
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['IPython.extensions.autoreload', 'IPython.extensions.tests.test_autoreload'])
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test_group_names.append('autoreload')
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#-----------------------------------------------------------------------------
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# Functions and classes
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#-----------------------------------------------------------------------------
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def check_exclusions_exist():
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from IPython.paths import get_ipython_package_dir
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from warnings import warn
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parent = os.path.dirname(get_ipython_package_dir())
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for sec in test_sections:
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for pattern in sec.exclusions:
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fullpath = pjoin(parent, pattern)
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if not os.path.exists(fullpath) and not glob.glob(fullpath + '.*'):
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warn("Excluding nonexistent file: %r" % pattern)
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class ExclusionPlugin(Plugin):
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"""A nose plugin to effect our exclusions of files and directories.
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"""
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name = 'exclusions'
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score = 3000 # Should come before any other plugins
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def __init__(self, exclude_patterns=None):
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"""
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Parameters
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----------
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exclude_patterns : sequence of strings, optional
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Filenames containing these patterns (as raw strings, not as regular
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expressions) are excluded from the tests.
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"""
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self.exclude_patterns = exclude_patterns or []
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super(ExclusionPlugin, self).__init__()
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def options(self, parser, env=os.environ):
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Plugin.options(self, parser, env)
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def configure(self, options, config):
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Plugin.configure(self, options, config)
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# Override nose trying to disable plugin.
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self.enabled = True
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def wantFile(self, filename):
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"""Return whether the given filename should be scanned for tests.
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"""
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if any(pat in filename for pat in self.exclude_patterns):
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return False
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return None
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def wantDirectory(self, directory):
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"""Return whether the given directory should be scanned for tests.
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"""
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if any(pat in directory for pat in self.exclude_patterns):
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return False
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return None
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class StreamCapturer(Thread):
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daemon = True # Don't hang if main thread crashes
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started = False
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def __init__(self, echo=False):
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super(StreamCapturer, self).__init__()
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self.echo = echo
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self.streams = []
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self.buffer = BytesIO()
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self.readfd, self.writefd = os.pipe()
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self.buffer_lock = Lock()
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self.stop = Event()
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def run(self):
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self.started = True
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while not self.stop.is_set():
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chunk = os.read(self.readfd, 1024)
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with self.buffer_lock:
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self.buffer.write(chunk)
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if self.echo:
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sys.stdout.write(bytes_to_str(chunk))
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os.close(self.readfd)
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os.close(self.writefd)
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def reset_buffer(self):
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with self.buffer_lock:
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self.buffer.truncate(0)
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self.buffer.seek(0)
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def get_buffer(self):
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with self.buffer_lock:
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return self.buffer.getvalue()
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def ensure_started(self):
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if not self.started:
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self.start()
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def halt(self):
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"""Safely stop the thread."""
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if not self.started:
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return
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self.stop.set()
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os.write(self.writefd, b'\0') # Ensure we're not locked in a read()
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self.join()
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class SubprocessStreamCapturePlugin(Plugin):
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name='subprocstreams'
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def __init__(self):
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Plugin.__init__(self)
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self.stream_capturer = StreamCapturer()
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self.destination = os.environ.get('IPTEST_SUBPROC_STREAMS', 'capture')
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# This is ugly, but distant parts of the test machinery need to be able
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# to redirect streams, so we make the object globally accessible.
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nose.iptest_stdstreams_fileno = self.get_write_fileno
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def get_write_fileno(self):
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if self.destination == 'capture':
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self.stream_capturer.ensure_started()
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return self.stream_capturer.writefd
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elif self.destination == 'discard':
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return os.open(os.devnull, os.O_WRONLY)
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else:
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return sys.__stdout__.fileno()
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def configure(self, options, config):
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Plugin.configure(self, options, config)
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# Override nose trying to disable plugin.
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if self.destination == 'capture':
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self.enabled = True
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def startTest(self, test):
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# Reset log capture
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self.stream_capturer.reset_buffer()
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def formatFailure(self, test, err):
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# Show output
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ec, ev, tb = err
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captured = self.stream_capturer.get_buffer().decode('utf-8', 'replace')
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if captured.strip():
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ev = safe_str(ev)
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out = [ev, '>> begin captured subprocess output <<',
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captured,
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'>> end captured subprocess output <<']
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return ec, '\n'.join(out), tb
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return err
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formatError = formatFailure
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def finalize(self, result):
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self.stream_capturer.halt()
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def run_iptest():
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"""Run the IPython test suite using nose.
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This function is called when this script is **not** called with the form
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`iptest all`. It simply calls nose with appropriate command line flags
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and accepts all of the standard nose arguments.
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"""
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# Apply our monkeypatch to Xunit
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if '--with-xunit' in sys.argv and not hasattr(Xunit, 'orig_addError'):
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monkeypatch_xunit()
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arg1 = sys.argv[1]
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if arg1 in test_sections:
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section = test_sections[arg1]
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sys.argv[1:2] = section.includes
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elif arg1.startswith('IPython.') and arg1[8:] in test_sections:
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section = test_sections[arg1[8:]]
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sys.argv[1:2] = section.includes
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else:
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section = TestSection(arg1, includes=[arg1])
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argv = sys.argv + [ '--detailed-errors', # extra info in tracebacks
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# We add --exe because of setuptools' imbecility (it
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# blindly does chmod +x on ALL files). Nose does the
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# right thing and it tries to avoid executables,
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# setuptools unfortunately forces our hand here. This
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# has been discussed on the distutils list and the
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# setuptools devs refuse to fix this problem!
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'--exe',
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]
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if '-a' not in argv and '-A' not in argv:
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argv = argv + ['-a', '!crash']
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if nose.__version__ >= '0.11':
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# I don't fully understand why we need this one, but depending on what
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# directory the test suite is run from, if we don't give it, 0 tests
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# get run. Specifically, if the test suite is run from the source dir
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# with an argument (like 'iptest.py IPython.core', 0 tests are run,
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# even if the same call done in this directory works fine). It appears
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# that if the requested package is in the current dir, nose bails early
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# by default. Since it's otherwise harmless, leave it in by default
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# for nose >= 0.11, though unfortunately nose 0.10 doesn't support it.
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argv.append('--traverse-namespace')
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plugins = [ ExclusionPlugin(section.excludes), KnownFailure(),
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SubprocessStreamCapturePlugin() ]
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# we still have some vestigial doctests in core
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if (section.name.startswith(('core', 'IPython.core'))):
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plugins.append(IPythonDoctest())
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argv.extend([
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'--with-ipdoctest',
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'--ipdoctest-tests',
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'--ipdoctest-extension=txt',
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])
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# Use working directory set by parent process (see iptestcontroller)
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if 'IPTEST_WORKING_DIR' in os.environ:
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os.chdir(os.environ['IPTEST_WORKING_DIR'])
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# We need a global ipython running in this process, but the special
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# in-process group spawns its own IPython kernels, so for *that* group we
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# must avoid also opening the global one (otherwise there's a conflict of
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# singletons). Ultimately the solution to this problem is to refactor our
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# assumptions about what needs to be a singleton and what doesn't (app
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# objects should, individual shells shouldn't). But for now, this
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# workaround allows the test suite for the inprocess module to complete.
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|
|
if 'kernel.inprocess' not in section.name:
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from IPython.testing import globalipapp
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globalipapp.start_ipython()
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# Now nose can run
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TestProgram(argv=argv, addplugins=plugins)
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if __name__ == '__main__':
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run_iptest()
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|
