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# -*- coding: utf-8 -*-
""" version info, help messages, tracing configuration. """
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import os
import sys
from argparse import Action
import py
import pytest
from _pytest.config import PrintHelp
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 module name or entry point (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",
dest="override_ini",
action="append",
help='override ini option with "option=value" style, e.g. `-o xfail_strict=True -o cache_dir=cache`.',
)
@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 showversion(config):
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")
def pytest_cmdline_main(config):
if config.option.version:
showversion(config)
return 0
elif config.option.help:
config._do_configure()
showhelp(config)
config._ensure_unconfigure()
return 0
def showhelp(config):
import textwrap
reporter = config.pluginmanager.get_plugin("terminalreporter")
tw = reporter._tw
tw.write(config._parser.optparser.format_help())
tw.line()
tw.line(
"[pytest] ini-options in the first pytest.ini|tox.ini|setup.cfg file found:"
)
tw.line()
columns = tw.fullwidth # costly call
indent_len = 24 # based on argparse's max_help_position=24
indent = " " * indent_len
for name in config._parser._ininames:
help, type, default = config._parser._inidict[name]
if type is None:
type = "string"
spec = "%s (%s):" % (name, type)
tw.write(" %s" % spec)
spec_len = len(spec)
if spec_len > (indent_len - 3):
# Display help starting at a new line.
tw.line()
helplines = textwrap.wrap(
help,
columns,
initial_indent=indent,
subsequent_indent=indent,
break_on_hyphens=False,
)
for line in helplines:
tw.line(line)
else:
# Display help starting after the spec, following lines indented.
tw.write(" " * (indent_len - spec_len - 2))
wrapped = textwrap.wrap(help, columns - indent_len, break_on_hyphens=False)
tw.line(wrapped[0])
for line in wrapped[1:]:
tw.line(indent + line)
tw.line()
tw.line("environment variables:")
vars = [
("PYTEST_ADDOPTS", "extra command line options"),
("PYTEST_PLUGINS", "comma-separated plugins to load during startup"),
("PYTEST_DISABLE_PLUGIN_AUTOLOAD", "set to disable plugin auto-loading"),
("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; fixtures with leading '_' are only shown "
"with the '-v' option"
)
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
|
