185 lines
6.5 KiB
Python
185 lines
6.5 KiB
Python
""" version info, help messages, tracing configuration. """
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from __future__ import absolute_import, division, print_function
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import py
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import pytest
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from _pytest.config import PrintHelp
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import os
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import sys
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from argparse import Action
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class HelpAction(Action):
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"""This is an argparse Action that will raise an exception in
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order to skip the rest of the argument parsing when --help is passed.
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This prevents argparse from quitting due to missing required arguments
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when any are defined, for example by ``pytest_addoption``.
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This is similar to the way that the builtin argparse --help option is
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implemented by raising SystemExit.
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"""
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def __init__(self,
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option_strings,
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dest=None,
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default=False,
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help=None):
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super(HelpAction, self).__init__(
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option_strings=option_strings,
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dest=dest,
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const=True,
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default=default,
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nargs=0,
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help=help)
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def __call__(self, parser, namespace, values, option_string=None):
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setattr(namespace, self.dest, self.const)
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# We should only skip the rest of the parsing after preparse is done
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if getattr(parser._parser, 'after_preparse', False):
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raise PrintHelp
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def pytest_addoption(parser):
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group = parser.getgroup('debugconfig')
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group.addoption('--version', action="store_true",
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help="display pytest lib version and import information.")
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group._addoption("-h", "--help", action=HelpAction, dest="help",
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help="show help message and configuration info")
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group._addoption('-p', action="append", dest="plugins", default=[],
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metavar="name",
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help="early-load given plugin (multi-allowed). "
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"To avoid loading of plugins, use the `no:` prefix, e.g. "
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"`no:doctest`.")
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group.addoption('--traceconfig', '--trace-config',
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action="store_true", default=False,
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help="trace considerations of conftest.py files."),
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group.addoption('--debug',
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action="store_true", dest="debug", default=False,
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help="store internal tracing debug information in 'pytestdebug.log'.")
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group._addoption(
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'-o', '--override-ini', nargs='*', dest="override_ini",
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action="append",
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help="override config option with option=value style, e.g. `-o xfail_strict=True`.")
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@pytest.hookimpl(hookwrapper=True)
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def pytest_cmdline_parse():
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outcome = yield
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config = outcome.get_result()
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if config.option.debug:
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path = os.path.abspath("pytestdebug.log")
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debugfile = open(path, 'w')
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debugfile.write("versions pytest-%s, py-%s, "
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"python-%s\ncwd=%s\nargs=%s\n\n" % (
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pytest.__version__, py.__version__,
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".".join(map(str, sys.version_info)),
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os.getcwd(), config._origargs))
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config.trace.root.setwriter(debugfile.write)
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undo_tracing = config.pluginmanager.enable_tracing()
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sys.stderr.write("writing pytestdebug information to %s\n" % path)
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def unset_tracing():
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debugfile.close()
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sys.stderr.write("wrote pytestdebug information to %s\n" %
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debugfile.name)
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config.trace.root.setwriter(None)
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undo_tracing()
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config.add_cleanup(unset_tracing)
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def pytest_cmdline_main(config):
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if config.option.version:
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p = py.path.local(pytest.__file__)
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sys.stderr.write("This is pytest version %s, imported from %s\n" %
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(pytest.__version__, p))
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plugininfo = getpluginversioninfo(config)
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if plugininfo:
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for line in plugininfo:
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sys.stderr.write(line + "\n")
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return 0
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elif config.option.help:
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config._do_configure()
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showhelp(config)
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config._ensure_unconfigure()
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return 0
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def showhelp(config):
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reporter = config.pluginmanager.get_plugin('terminalreporter')
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tw = reporter._tw
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tw.write(config._parser.optparser.format_help())
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tw.line()
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tw.line()
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tw.line("[pytest] ini-options in the first "
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"pytest.ini|tox.ini|setup.cfg file found:")
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tw.line()
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for name in config._parser._ininames:
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help, type, default = config._parser._inidict[name]
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if type is None:
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type = "string"
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spec = "%s (%s)" % (name, type)
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line = " %-24s %s" % (spec, help)
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tw.line(line[:tw.fullwidth])
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tw.line()
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tw.line("environment variables:")
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vars = [
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("PYTEST_ADDOPTS", "extra command line options"),
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("PYTEST_PLUGINS", "comma-separated plugins to load during startup"),
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("PYTEST_DEBUG", "set to enable debug tracing of pytest's internals")
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]
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for name, help in vars:
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tw.line(" %-24s %s" % (name, help))
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tw.line()
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tw.line()
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tw.line("to see available markers type: pytest --markers")
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tw.line("to see available fixtures type: pytest --fixtures")
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tw.line("(shown according to specified file_or_dir or current dir "
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"if not specified)")
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for warningreport in reporter.stats.get('warnings', []):
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tw.line("warning : " + warningreport.message, red=True)
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return
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conftest_options = [
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('pytest_plugins', 'list of plugin names to load'),
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]
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def getpluginversioninfo(config):
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lines = []
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plugininfo = config.pluginmanager.list_plugin_distinfo()
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if plugininfo:
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lines.append("setuptools registered plugins:")
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for plugin, dist in plugininfo:
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loc = getattr(plugin, '__file__', repr(plugin))
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content = "%s-%s at %s" % (dist.project_name, dist.version, loc)
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lines.append(" " + content)
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return lines
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def pytest_report_header(config):
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lines = []
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if config.option.debug or config.option.traceconfig:
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lines.append("using: pytest-%s pylib-%s" %
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(pytest.__version__, py.__version__))
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verinfo = getpluginversioninfo(config)
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if verinfo:
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lines.extend(verinfo)
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if config.option.traceconfig:
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lines.append("active plugins:")
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items = config.pluginmanager.list_name_plugin()
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for name, plugin in items:
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if hasattr(plugin, '__file__'):
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r = plugin.__file__
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else:
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r = repr(plugin)
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lines.append(" %-20s: %s" % (name, r))
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return lines
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