731 lines
27 KiB
Python
731 lines
27 KiB
Python
""" command line options, ini-file and conftest.py processing. """
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import py
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import sys, os
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from _pytest.core import PluginManager
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import pytest
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from _pytest._argcomplete import try_argcomplete, filescompleter
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# enable after some grace period for plugin writers
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TYPE_WARN = False
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if TYPE_WARN:
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import warnings
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def pytest_cmdline_parse(pluginmanager, args):
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config = Config(pluginmanager)
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config.parse(args)
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return config
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def pytest_unconfigure(config):
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while 1:
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try:
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fin = config._cleanup.pop()
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except IndexError:
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break
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fin()
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class Parser:
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""" Parser for command line arguments and ini-file values. """
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def __init__(self, usage=None, processopt=None):
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self._anonymous = OptionGroup("custom options", parser=self)
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self._groups = []
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self._processopt = processopt
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self._usage = usage
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self._inidict = {}
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self._ininames = []
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self.hints = []
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def processoption(self, option):
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if self._processopt:
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if option.dest:
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self._processopt(option)
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def getgroup(self, name, description="", after=None):
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""" get (or create) a named option Group.
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:name: name of the option group.
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:description: long description for --help output.
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:after: name of other group, used for ordering --help output.
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The returned group object has an ``addoption`` method with the same
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signature as :py:func:`parser.addoption
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<_pytest.config.Parser.addoption>` but will be shown in the
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respective group in the output of ``pytest. --help``.
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"""
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for group in self._groups:
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if group.name == name:
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return group
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group = OptionGroup(name, description, parser=self)
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i = 0
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for i, grp in enumerate(self._groups):
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if grp.name == after:
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break
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self._groups.insert(i+1, group)
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return group
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def addoption(self, *opts, **attrs):
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""" register a command line option.
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:opts: option names, can be short or long options.
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:attrs: same attributes which the ``add_option()`` function of the
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`optparse library
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<http://docs.python.org/library/optparse.html#module-optparse>`_
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accepts.
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After command line parsing options are available on the pytest config
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object via ``config.option.NAME`` where ``NAME`` is usually set
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by passing a ``dest`` attribute, for example
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``addoption("--long", dest="NAME", ...)``.
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"""
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self._anonymous.addoption(*opts, **attrs)
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def parse(self, args):
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self.optparser = optparser = MyOptionParser(self)
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groups = self._groups + [self._anonymous]
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for group in groups:
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if group.options:
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desc = group.description or group.name
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arggroup = optparser.add_argument_group(desc)
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for option in group.options:
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n = option.names()
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a = option.attrs()
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arggroup.add_argument(*n, **a)
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# bash like autocompletion for dirs (appending '/')
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optparser.add_argument(FILE_OR_DIR, nargs='*'
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).completer=filescompleter
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try_argcomplete(self.optparser)
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return self.optparser.parse_args([str(x) for x in args])
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def parse_setoption(self, args, option):
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parsedoption = self.parse(args)
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for name, value in parsedoption.__dict__.items():
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setattr(option, name, value)
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return getattr(parsedoption, FILE_OR_DIR)
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def addini(self, name, help, type=None, default=None):
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""" register an ini-file option.
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:name: name of the ini-variable
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:type: type of the variable, can be ``pathlist``, ``args`` or ``linelist``.
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:default: default value if no ini-file option exists but is queried.
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The value of ini-variables can be retrieved via a call to
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:py:func:`config.getini(name) <_pytest.config.Config.getini>`.
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"""
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assert type in (None, "pathlist", "args", "linelist")
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self._inidict[name] = (help, type, default)
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self._ininames.append(name)
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class ArgumentError(Exception):
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"""
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Raised if an Argument instance is created with invalid or
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inconsistent arguments.
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"""
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def __init__(self, msg, option):
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self.msg = msg
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self.option_id = str(option)
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def __str__(self):
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if self.option_id:
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return "option %s: %s" % (self.option_id, self.msg)
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else:
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return self.msg
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class Argument:
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"""class that mimics the necessary behaviour of py.std.optparse.Option """
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_typ_map = {
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'int': int,
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'string': str,
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}
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def __init__(self, *names, **attrs):
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"""store parms in private vars for use in add_argument"""
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self._attrs = attrs
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self._short_opts = []
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self._long_opts = []
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self.dest = attrs.get('dest')
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if TYPE_WARN:
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try:
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help = attrs['help']
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if '%default' in help:
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warnings.warn(
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'py.test now uses argparse. "%default" should be'
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' changed to "%(default)s" ',
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FutureWarning,
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stacklevel=3)
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except KeyError:
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pass
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try:
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typ = attrs['type']
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except KeyError:
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pass
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else:
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# this might raise a keyerror as well, don't want to catch that
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if isinstance(typ, str):
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if typ == 'choice':
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if TYPE_WARN:
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warnings.warn(
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'type argument to addoption() is a string %r.'
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' For parsearg this is optional and when supplied '
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' should be a type.'
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' (options: %s)' % (typ, names),
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FutureWarning,
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stacklevel=3)
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# argparse expects a type here take it from
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# the type of the first element
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attrs['type'] = type(attrs['choices'][0])
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else:
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if TYPE_WARN:
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warnings.warn(
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'type argument to addoption() is a string %r.'
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' For parsearg this should be a type.'
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' (options: %s)' % (typ, names),
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FutureWarning,
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stacklevel=3)
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attrs['type'] = Argument._typ_map[typ]
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# used in test_parseopt -> test_parse_defaultgetter
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self.type = attrs['type']
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else:
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self.type = typ
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try:
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# attribute existence is tested in Config._processopt
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self.default = attrs['default']
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except KeyError:
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pass
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self._set_opt_strings(names)
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if not self.dest:
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if self._long_opts:
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self.dest = self._long_opts[0][2:].replace('-', '_')
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else:
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try:
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self.dest = self._short_opts[0][1:]
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except IndexError:
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raise ArgumentError(
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'need a long or short option', self)
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def names(self):
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return self._short_opts + self._long_opts
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def attrs(self):
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# update any attributes set by processopt
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attrs = 'default dest help'.split()
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if self.dest:
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attrs.append(self.dest)
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for attr in attrs:
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try:
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self._attrs[attr] = getattr(self, attr)
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except AttributeError:
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pass
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if self._attrs.get('help'):
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a = self._attrs['help']
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a = a.replace('%default', '%(default)s')
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#a = a.replace('%prog', '%(prog)s')
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self._attrs['help'] = a
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return self._attrs
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def _set_opt_strings(self, opts):
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"""directly from optparse
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might not be necessary as this is passed to argparse later on"""
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for opt in opts:
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if len(opt) < 2:
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raise ArgumentError(
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"invalid option string %r: "
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"must be at least two characters long" % opt, self)
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elif len(opt) == 2:
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if not (opt[0] == "-" and opt[1] != "-"):
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raise ArgumentError(
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"invalid short option string %r: "
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"must be of the form -x, (x any non-dash char)" % opt,
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self)
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self._short_opts.append(opt)
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else:
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if not (opt[0:2] == "--" and opt[2] != "-"):
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raise ArgumentError(
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"invalid long option string %r: "
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"must start with --, followed by non-dash" % opt,
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self)
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self._long_opts.append(opt)
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def __repr__(self):
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retval = 'Argument('
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if self._short_opts:
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retval += '_short_opts: ' + repr(self._short_opts) + ', '
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if self._long_opts:
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retval += '_long_opts: ' + repr(self._long_opts) + ', '
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retval += 'dest: ' + repr(self.dest) + ', '
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if hasattr(self, 'type'):
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retval += 'type: ' + repr(self.type) + ', '
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if hasattr(self, 'default'):
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retval += 'default: ' + repr(self.default) + ', '
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if retval[-2:] == ', ': # always long enough to test ("Argument(" )
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retval = retval[:-2]
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retval += ')'
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return retval
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class OptionGroup:
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def __init__(self, name, description="", parser=None):
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self.name = name
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self.description = description
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self.options = []
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self.parser = parser
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def addoption(self, *optnames, **attrs):
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""" add an option to this group.
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if a shortened version of a long option is specified it will
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be suppressed in the help. addoption('--twowords', '--two-words')
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results in help showing '--two-words' only, but --twowords gets
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accepted **and** the automatic destination is in args.twowords
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"""
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option = Argument(*optnames, **attrs)
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self._addoption_instance(option, shortupper=False)
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def _addoption(self, *optnames, **attrs):
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option = Argument(*optnames, **attrs)
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self._addoption_instance(option, shortupper=True)
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def _addoption_instance(self, option, shortupper=False):
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if not shortupper:
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for opt in option._short_opts:
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if opt[0] == '-' and opt[1].islower():
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raise ValueError("lowercase shortoptions reserved")
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if self.parser:
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self.parser.processoption(option)
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self.options.append(option)
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class MyOptionParser(py.std.argparse.ArgumentParser):
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def __init__(self, parser):
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self._parser = parser
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py.std.argparse.ArgumentParser.__init__(self, usage=parser._usage,
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add_help=False, formatter_class=DropShorterLongHelpFormatter)
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def format_epilog(self, formatter):
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hints = self._parser.hints
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if hints:
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s = "\n".join(["hint: " + x for x in hints]) + "\n"
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s = "\n" + s + "\n"
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return s
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return ""
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def parse_args(self, args=None, namespace=None):
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"""allow splitting of positional arguments"""
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args, argv = self.parse_known_args(args, namespace)
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if argv:
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for arg in argv:
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if arg and arg[0] == '-':
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msg = py.std.argparse._('unrecognized arguments: %s')
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self.error(msg % ' '.join(argv))
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getattr(args, FILE_OR_DIR).extend(argv)
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return args
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class DropShorterLongHelpFormatter(py.std.argparse.HelpFormatter):
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"""shorten help for long options that differ only in extra hyphens
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- collapse **long** options that are the same except for extra hyphens
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- special action attribute map_long_option allows surpressing additional
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long options
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- shortcut if there are only two options and one of them is a short one
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- cache result on action object as this is called at least 2 times
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"""
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def _format_action_invocation(self, action):
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orgstr = py.std.argparse.HelpFormatter._format_action_invocation(self, action)
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if orgstr and orgstr[0] != '-': # only optional arguments
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return orgstr
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res = getattr(action, '_formatted_action_invocation', None)
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if res:
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return res
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options = orgstr.split(', ')
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if len(options) == 2 and (len(options[0]) == 2 or len(options[1]) == 2):
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# a shortcut for '-h, --help' or '--abc', '-a'
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action._formatted_action_invocation = orgstr
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return orgstr
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return_list = []
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option_map = getattr(action, 'map_long_option', {})
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if option_map is None:
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option_map = {}
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short_long = {}
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for option in options:
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if len(option) == 2 or option[2] == ' ':
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continue
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if not option.startswith('--'):
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raise ArgumentError('long optional argument without "--": [%s]'
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% (option), self)
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xxoption = option[2:]
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if xxoption.split()[0] not in option_map:
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shortened = xxoption.replace('-', '')
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if shortened not in short_long or \
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len(short_long[shortened]) < len(xxoption):
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short_long[shortened] = xxoption
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# now short_long has been filled out to the longest with dashes
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# **and** we keep the right option ordering from add_argument
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for option in options: #
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if len(option) == 2 or option[2] == ' ':
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return_list.append(option)
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if option[2:] == short_long.get(option.replace('-', '')):
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return_list.append(option)
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action._formatted_action_invocation = ', '.join(return_list)
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return action._formatted_action_invocation
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class Conftest(object):
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""" the single place for accessing values and interacting
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towards conftest modules from py.test objects.
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"""
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def __init__(self, onimport=None, confcutdir=None):
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self._path2confmods = {}
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self._onimport = onimport
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self._conftestpath2mod = {}
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self._confcutdir = confcutdir
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def setinitial(self, args):
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""" try to find a first anchor path for looking up global values
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from conftests. This function is usually called _before_
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argument parsing. conftest files may add command line options
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and we thus have no completely safe way of determining
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which parts of the arguments are actually related to options
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and which are file system paths. We just try here to get
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bootstrapped ...
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"""
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current = py.path.local()
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opt = '--confcutdir'
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for i in range(len(args)):
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opt1 = str(args[i])
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if opt1.startswith(opt):
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if opt1 == opt:
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if len(args) > i:
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p = current.join(args[i+1], abs=True)
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elif opt1.startswith(opt + "="):
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p = current.join(opt1[len(opt)+1:], abs=1)
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self._confcutdir = p
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break
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foundanchor = False
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for arg in args:
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if hasattr(arg, 'startswith') and arg.startswith("--"):
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continue
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anchor = current.join(arg, abs=1)
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if exists(anchor): # we found some file object
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self._try_load_conftest(anchor)
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foundanchor = True
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if not foundanchor:
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self._try_load_conftest(current)
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|
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def _try_load_conftest(self, anchor):
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self._path2confmods[None] = self.getconftestmodules(anchor)
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# let's also consider test* subdirs
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if anchor.check(dir=1):
|
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for x in anchor.listdir("test*"):
|
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if x.check(dir=1):
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self.getconftestmodules(x)
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|
|
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def getconftestmodules(self, path):
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try:
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clist = self._path2confmods[path]
|
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except KeyError:
|
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if path is None:
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raise ValueError("missing default conftest.")
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clist = []
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for parent in path.parts():
|
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if self._confcutdir and self._confcutdir.relto(parent):
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continue
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conftestpath = parent.join("conftest.py")
|
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if conftestpath.check(file=1):
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clist.append(self.importconftest(conftestpath))
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self._path2confmods[path] = clist
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return clist
|
|
|
|
def rget(self, name, path=None):
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mod, value = self.rget_with_confmod(name, path)
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return value
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|
|
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def rget_with_confmod(self, name, path=None):
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modules = self.getconftestmodules(path)
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|
modules.reverse()
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|
for mod in modules:
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try:
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|
return mod, getattr(mod, name)
|
|
except AttributeError:
|
|
continue
|
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raise KeyError(name)
|
|
|
|
def importconftest(self, conftestpath):
|
|
assert conftestpath.check(), conftestpath
|
|
try:
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return self._conftestpath2mod[conftestpath]
|
|
except KeyError:
|
|
pkgpath = conftestpath.pypkgpath()
|
|
if pkgpath is None:
|
|
_ensure_removed_sysmodule(conftestpath.purebasename)
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|
self._conftestpath2mod[conftestpath] = mod = conftestpath.pyimport()
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dirpath = conftestpath.dirpath()
|
|
if dirpath in self._path2confmods:
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for path, mods in self._path2confmods.items():
|
|
if path and path.relto(dirpath) or path == dirpath:
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assert mod not in mods
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mods.append(mod)
|
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self._postimport(mod)
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return mod
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|
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def _postimport(self, mod):
|
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if self._onimport:
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self._onimport(mod)
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return mod
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|
|
|
def _ensure_removed_sysmodule(modname):
|
|
try:
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del sys.modules[modname]
|
|
except KeyError:
|
|
pass
|
|
|
|
class CmdOptions(object):
|
|
""" holds cmdline options as attributes."""
|
|
def __init__(self, **kwargs):
|
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self.__dict__.update(kwargs)
|
|
def __repr__(self):
|
|
return "<CmdOptions %r>" %(self.__dict__,)
|
|
|
|
FILE_OR_DIR = 'file_or_dir'
|
|
class Config(object):
|
|
""" access to configuration values, pluginmanager and plugin hooks. """
|
|
|
|
def __init__(self, pluginmanager):
|
|
#: access to command line option as attributes.
|
|
#: (deprecated), use :py:func:`getoption() <_pytest.config.Config.getoption>` instead
|
|
self.option = CmdOptions()
|
|
_a = FILE_OR_DIR
|
|
self._parser = Parser(
|
|
usage="%%(prog)s [options] [%s] [%s] [...]" % (_a, _a),
|
|
processopt=self._processopt,
|
|
)
|
|
#: a pluginmanager instance
|
|
self.pluginmanager = pluginmanager
|
|
self.trace = self.pluginmanager.trace.root.get("config")
|
|
self._conftest = Conftest(onimport=self._onimportconftest)
|
|
self.hook = self.pluginmanager.hook
|
|
self._inicache = {}
|
|
self._opt2dest = {}
|
|
self._cleanup = []
|
|
|
|
@classmethod
|
|
def fromdictargs(cls, option_dict, args):
|
|
""" constructor useable for subprocesses. """
|
|
from _pytest.core import get_plugin_manager
|
|
pluginmanager = get_plugin_manager()
|
|
config = cls(pluginmanager)
|
|
# XXX slightly crude way to initialize capturing
|
|
import _pytest.capture
|
|
_pytest.capture.pytest_cmdline_parse(config.pluginmanager, args)
|
|
config._preparse(args, addopts=False)
|
|
config.option.__dict__.update(option_dict)
|
|
for x in config.option.plugins:
|
|
config.pluginmanager.consider_pluginarg(x)
|
|
return config
|
|
|
|
def _onimportconftest(self, conftestmodule):
|
|
self.trace("loaded conftestmodule %r" %(conftestmodule,))
|
|
self.pluginmanager.consider_conftest(conftestmodule)
|
|
|
|
def _processopt(self, opt):
|
|
for name in opt._short_opts + opt._long_opts:
|
|
self._opt2dest[name] = opt.dest
|
|
|
|
if hasattr(opt, 'default') and opt.dest:
|
|
if not hasattr(self.option, opt.dest):
|
|
setattr(self.option, opt.dest, opt.default)
|
|
|
|
def _getmatchingplugins(self, fspath):
|
|
allconftests = self._conftest._conftestpath2mod.values()
|
|
plugins = [x for x in self.pluginmanager.getplugins()
|
|
if x not in allconftests]
|
|
plugins += self._conftest.getconftestmodules(fspath)
|
|
return plugins
|
|
|
|
def _setinitialconftest(self, args):
|
|
# capture output during conftest init (#issue93)
|
|
# XXX introduce load_conftest hook to avoid needing to know
|
|
# about capturing plugin here
|
|
capman = self.pluginmanager.getplugin("capturemanager")
|
|
capman.resumecapture()
|
|
try:
|
|
try:
|
|
self._conftest.setinitial(args)
|
|
finally:
|
|
out, err = capman.suspendcapture() # logging might have got it
|
|
except:
|
|
sys.stdout.write(out)
|
|
sys.stderr.write(err)
|
|
raise
|
|
|
|
def _initini(self, args):
|
|
self.inicfg = getcfg(args, ["pytest.ini", "tox.ini", "setup.cfg"])
|
|
self._parser.addini('addopts', 'extra command line options', 'args')
|
|
self._parser.addini('minversion', 'minimally required pytest version')
|
|
|
|
def _preparse(self, args, addopts=True):
|
|
self._initini(args)
|
|
if addopts:
|
|
args[:] = self.getini("addopts") + args
|
|
self._checkversion()
|
|
self.pluginmanager.consider_preparse(args)
|
|
self.pluginmanager.consider_setuptools_entrypoints()
|
|
self.pluginmanager.consider_env()
|
|
self._setinitialconftest(args)
|
|
self.pluginmanager.do_addoption(self._parser)
|
|
if addopts:
|
|
self.hook.pytest_cmdline_preparse(config=self, args=args)
|
|
|
|
def _checkversion(self):
|
|
minver = self.inicfg.get('minversion', None)
|
|
if minver:
|
|
ver = minver.split(".")
|
|
myver = pytest.__version__.split(".")
|
|
if myver < ver:
|
|
raise pytest.UsageError(
|
|
"%s:%d: requires pytest-%s, actual pytest-%s'" %(
|
|
self.inicfg.config.path, self.inicfg.lineof('minversion'),
|
|
minver, pytest.__version__))
|
|
|
|
def parse(self, args):
|
|
# parse given cmdline arguments into this config object.
|
|
# Note that this can only be called once per testing process.
|
|
assert not hasattr(self, 'args'), (
|
|
"can only parse cmdline args at most once per Config object")
|
|
self._origargs = args
|
|
self._preparse(args)
|
|
self._parser.hints.extend(self.pluginmanager._hints)
|
|
args = self._parser.parse_setoption(args, self.option)
|
|
if not args:
|
|
args.append(py.std.os.getcwd())
|
|
self.args = args
|
|
|
|
def addinivalue_line(self, name, line):
|
|
""" add a line to an ini-file option. The option must have been
|
|
declared but might not yet be set in which case the line becomes the
|
|
the first line in its value. """
|
|
x = self.getini(name)
|
|
assert isinstance(x, list)
|
|
x.append(line) # modifies the cached list inline
|
|
|
|
def getini(self, name):
|
|
""" return configuration value from an :ref:`ini file <inifiles>`. If the
|
|
specified name hasn't been registered through a prior
|
|
:py:func:`parser.addini <pytest.config.Parser.addini>`
|
|
call (usually from a plugin), a ValueError is raised. """
|
|
try:
|
|
return self._inicache[name]
|
|
except KeyError:
|
|
self._inicache[name] = val = self._getini(name)
|
|
return val
|
|
|
|
def _getini(self, name):
|
|
try:
|
|
description, type, default = self._parser._inidict[name]
|
|
except KeyError:
|
|
raise ValueError("unknown configuration value: %r" %(name,))
|
|
try:
|
|
value = self.inicfg[name]
|
|
except KeyError:
|
|
if default is not None:
|
|
return default
|
|
if type is None:
|
|
return ''
|
|
return []
|
|
if type == "pathlist":
|
|
dp = py.path.local(self.inicfg.config.path).dirpath()
|
|
l = []
|
|
for relpath in py.std.shlex.split(value):
|
|
l.append(dp.join(relpath, abs=True))
|
|
return l
|
|
elif type == "args":
|
|
return py.std.shlex.split(value)
|
|
elif type == "linelist":
|
|
return [t for t in map(lambda x: x.strip(), value.split("\n")) if t]
|
|
else:
|
|
assert type is None
|
|
return value
|
|
|
|
def _getconftest_pathlist(self, name, path=None):
|
|
try:
|
|
mod, relroots = self._conftest.rget_with_confmod(name, path)
|
|
except KeyError:
|
|
return None
|
|
modpath = py.path.local(mod.__file__).dirpath()
|
|
l = []
|
|
for relroot in relroots:
|
|
if not isinstance(relroot, py.path.local):
|
|
relroot = relroot.replace("/", py.path.local.sep)
|
|
relroot = modpath.join(relroot, abs=True)
|
|
l.append(relroot)
|
|
return l
|
|
|
|
def _getconftest(self, name, path=None, check=False):
|
|
if check:
|
|
self._checkconftest(name)
|
|
return self._conftest.rget(name, path)
|
|
|
|
def getoption(self, name):
|
|
""" return command line option value.
|
|
|
|
:arg name: name of the option. You may also specify
|
|
the literal ``--OPT`` option instead of the "dest" option name.
|
|
"""
|
|
name = self._opt2dest.get(name, name)
|
|
try:
|
|
return getattr(self.option, name)
|
|
except AttributeError:
|
|
raise ValueError("no option named %r" % (name,))
|
|
|
|
def getvalue(self, name, path=None):
|
|
""" return command line option value.
|
|
|
|
:arg name: name of the command line option
|
|
|
|
(deprecated) if we can't find the option also lookup
|
|
the name in a matching conftest file.
|
|
"""
|
|
try:
|
|
return getattr(self.option, name)
|
|
except AttributeError:
|
|
return self._getconftest(name, path, check=False)
|
|
|
|
def getvalueorskip(self, name, path=None):
|
|
""" (deprecated) return getvalue(name) or call
|
|
py.test.skip if no value exists. """
|
|
__tracebackhide__ = True
|
|
try:
|
|
val = self.getvalue(name, path)
|
|
if val is None:
|
|
raise KeyError(name)
|
|
return val
|
|
except KeyError:
|
|
py.test.skip("no %r value found" %(name,))
|
|
|
|
def exists(path, ignore=EnvironmentError):
|
|
try:
|
|
return path.check()
|
|
except ignore:
|
|
return False
|
|
|
|
def getcfg(args, inibasenames):
|
|
args = [x for x in args if not str(x).startswith("-")]
|
|
if not args:
|
|
args = [py.path.local()]
|
|
for arg in args:
|
|
arg = py.path.local(arg)
|
|
for base in arg.parts(reverse=True):
|
|
for inibasename in inibasenames:
|
|
p = base.join(inibasename)
|
|
if exists(p):
|
|
iniconfig = py.iniconfig.IniConfig(p)
|
|
if 'pytest' in iniconfig.sections:
|
|
return iniconfig['pytest']
|
|
return {}
|
|
|