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