test_ok1/py/test/config.py

292 lines
9.8 KiB
Python

from __future__ import generators
import py
from conftesthandle import Conftest
from py.__.test.defaultconftest import adddefaultoptions
optparse = py.compat.optparse
# XXX move to Config class
basetemp = None
def ensuretemp(string, dir=1):
""" return temporary directory path with
the given string as the trailing part.
"""
global basetemp
if basetemp is None:
basetemp = py.path.local.make_numbered_dir(prefix='pytest-')
return basetemp.ensure(string, dir=dir)
class CmdOptions(object):
""" pure container instance for holding cmdline options
as attributes.
"""
def __repr__(self):
return "<CmdOptions %r>" %(self.__dict__,)
class Config(object):
""" central bus for dealing with configuration/initialization data. """
Option = optparse.Option
_initialized = False
def __init__(self):
self.option = CmdOptions()
self._parser = optparse.OptionParser(
usage="usage: %prog [options] [query] [filenames of tests]")
self._conftest = Conftest()
def parse(self, args):
""" parse cmdline arguments into this config object.
Note that this can only be called once per testing process.
"""
assert not self._initialized, (
"can only parse cmdline args at most once per Config object")
self._initialized = True
adddefaultoptions(self)
self._conftest.setinitial(args)
args = [str(x) for x in args]
cmdlineoption, args = self._parser.parse_args(args)
self.option.__dict__.update(vars(cmdlineoption))
if not args:
args.append(py.std.os.getcwd())
self.topdir = gettopdir(args)
self.args = args
# config objects are usually pickled across system
# barriers but they contain filesystem paths.
# upon getstate/setstate we take care to do everything
# relative to our "topdir".
def __getstate__(self):
return self._makerepr()
def __setstate__(self, repr):
self._repr = repr
def _initafterpickle(self, topdir):
self.__init__()
self._initialized = True
self.topdir = py.path.local(topdir)
self._mergerepr(self._repr)
del self._repr
def _makerepr(self):
l = []
for path in self.args:
path = py.path.local(path)
l.append(path.relto(self.topdir))
return l, self.option
def _mergerepr(self, repr):
# before any conftests are loaded we
# need to set the per-process singleton
# (also seens py.test.config) to have consistent
# option handling
global config_per_process
config_per_process = self
args, cmdlineopts = repr
self.args = [self.topdir.join(x) for x in args]
self.option = cmdlineopts
self._conftest.setinitial(self.args)
def getfsnode(self, path):
path = py.path.local(path)
assert path.check(), "%s: path does not exist" %(path,)
# we want our possibly custom collection tree to start at pkgroot
pkgpath = path.pypkgpath()
if pkgpath is None:
pkgpath = path.check(file=1) and path.dirpath() or path
Dir = self._conftest.rget("Directory", pkgpath)
col = Dir(pkgpath, config=self)
names = path.relto(col.fspath).split(path.sep)
return col._getitembynames(names)
def getvalue_pathlist(self, name, path=None):
""" return a matching value, which needs to be sequence
of filenames that will be returned as a list of Path
objects (they can be relative to the location
where they were found).
"""
try:
return getattr(self.option, name)
except AttributeError:
try:
mod, relroots = self._conftest.rget_with_confmod(name, path)
except KeyError:
return None
modpath = py.path.local(mod.__file__).dirpath()
return [modpath.join(x, abs=True) for x in relroots]
def addoptions(self, groupname, *specs):
""" add a named group of options to the current testing session.
This function gets invoked during testing session initialization.
"""
for spec in specs:
for shortopt in spec._short_opts:
if not shortopt.isupper():
raise ValueError(
"custom options must be capital letter "
"got %r" %(spec,)
)
return self._addoptions(groupname, *specs)
def _addoptions(self, groupname, *specs):
optgroup = optparse.OptionGroup(self._parser, groupname)
optgroup.add_options(specs)
self._parser.add_option_group(optgroup)
for opt in specs:
if hasattr(opt, 'default') and opt.dest:
if not hasattr(self.option, opt.dest):
setattr(self.option, opt.dest, opt.default)
return self.option
def getvalue(self, name, path=None):
""" return 'name' value looked up from the 'options'
and then from the first conftest file found up
the path (including the path itself).
if path is None, lookup the value in the initial
conftest modules found during command line parsing.
"""
try:
return getattr(self.option, name)
except AttributeError:
return self._conftest.rget(name, path)
def initreporter(self, bus):
if self.option.collectonly:
from py.__.test.report.collectonly import Reporter
else:
from py.__.test.report.terminal import Reporter
rep = Reporter(self, bus=bus)
return rep
def initsession(self):
""" return an initialized session object. """
cls = self._getsessionclass()
session = cls(self)
session.fixoptions()
session.reporter = self.initreporter(session.bus)
return session
def _getsessionclass(self):
""" return Session class determined from cmdline options
and looked up in initial config modules.
"""
if self.option.session is not None:
return self._conftest.rget(self.option.session)
else:
name = self._getsessionname()
try:
return self._conftest.rget(name)
except KeyError:
pass
importpath = globals()[name]
mod = __import__(importpath, None, None, '__doc__')
return getattr(mod, name)
def _getsessionname(self):
""" return default session name as determined from options. """
if self.option.collectonly:
name = 'Session'
elif self.option.looponfailing:
name = 'LooponfailingSession'
elif self.option.numprocesses or self.option.dist or self.option.executable:
name = 'DSession'
else:
name = 'Session'
return name
def _reparse(self, args):
""" this is used from tests that want to re-invoke parse(). """
#assert args # XXX should not be empty
global config_per_process
oldconfig = py.test.config
try:
config_per_process = py.test.config = Config()
config_per_process.parse(args)
return config_per_process
finally:
config_per_process = py.test.config = oldconfig
def _getcapture(self, path=None):
if self.option.nocapture:
iocapture = "no"
else:
iocapture = self.getvalue("conf_iocapture", path=path)
if iocapture == "fd":
return py.io.StdCaptureFD()
elif iocapture == "sys":
return py.io.StdCapture()
elif iocapture == "no":
return py.io.StdCapture(out=False, err=False, in_=False)
else:
raise ValueError("unknown io capturing: " + iocapture)
def gettracedir(self):
""" return a tracedirectory or None, depending on --tracedir. """
if self.option.tracedir is not None:
return py.path.local(self.option.tracedir)
def maketrace(self, name, flush=True):
""" return a tracedirectory or None, depending on --tracedir. """
tracedir = self.gettracedir()
if tracedir is None:
return NullTracer()
tracedir.ensure(dir=1)
return Tracer(tracedir.join(name), flush=flush)
class Tracer(object):
file = None
def __init__(self, path, flush=True):
self.file = path.open(mode='w')
self.flush = flush
def __call__(self, *args):
time = round(py.std.time.time(), 3)
print >>self.file, time, " ".join(map(str, args))
if self.flush:
self.file.flush()
def close(self):
self.file.close()
class NullTracer:
def __call__(self, *args):
pass
def close(self):
pass
# this is the one per-process instance of py.test configuration
config_per_process = Config()
# default import paths for sessions
Session = 'py.__.test.session'
LooponfailingSession = 'py.__.test.looponfail.remote'
DSession = 'py.__.test.dsession.dsession'
#
# helpers
#
def checkmarshal(name, value):
try:
py.std.marshal.dumps(value)
except ValueError:
raise ValueError("%s=%r is not marshallable" %(name, value))
def gettopdir(args):
""" return the top directory for the given paths.
if the common base dir resides in a python package
parent directory of the root package is returned.
"""
args = [py.path.local(arg) for arg in args]
p = reduce(py.path.local.common, args)
assert p, "cannot determine common basedir of %s" %(args,)
pkgdir = p.pypkgpath()
if pkgdir is None:
if p.check(file=1):
p = p.dirpath()
return p
else:
return pkgdir.dirpath()