7d86827b5e
don't use autouse fixtures for now because it would cause a proliferation and overhead for the execution of every test. Rather introduce a node.addfinalizer(fin) to attach a finalizer to the respective node and call it from node.setup() functions if the setup phase succeeded (i.e. there is no setup function or it finished successfully)
1860 lines
69 KiB
Python
1860 lines
69 KiB
Python
""" Python test discovery, setup and run of test functions. """
|
|
import py
|
|
import inspect
|
|
import sys
|
|
import pytest
|
|
from _pytest.main import getfslineno
|
|
from _pytest.mark import MarkDecorator, MarkInfo
|
|
from _pytest.monkeypatch import monkeypatch
|
|
from py._code.code import TerminalRepr
|
|
|
|
import _pytest
|
|
cutdir = py.path.local(_pytest.__file__).dirpath()
|
|
|
|
NoneType = type(None)
|
|
|
|
callable = py.builtin.callable
|
|
|
|
def getimfunc(func):
|
|
try:
|
|
return func.__func__
|
|
except AttributeError:
|
|
try:
|
|
return func.im_func
|
|
except AttributeError:
|
|
return func
|
|
|
|
|
|
class FixtureFunctionMarker:
|
|
def __init__(self, scope, params, autouse=False):
|
|
self.scope = scope
|
|
self.params = params
|
|
self.autouse = autouse
|
|
|
|
def __call__(self, function):
|
|
if inspect.isclass(function):
|
|
raise ValueError("class fixtures not supported (may be in the future)")
|
|
function._pytestfixturefunction = self
|
|
return function
|
|
|
|
|
|
def fixture(scope="function", params=None, autouse=False):
|
|
""" (return a) decorator to mark a fixture factory function.
|
|
|
|
This decorator can be used (with or or without parameters) to define
|
|
a fixture function. The name of the fixture function can later be
|
|
referenced to cause its invocation ahead of running tests: test
|
|
modules or classes can use the pytest.mark.usefixtures(fixturename)
|
|
marker. Test functions can directly use fixture names as input
|
|
arguments in which case the fixture instance returned from the fixture
|
|
function will be injected.
|
|
|
|
:arg scope: the scope for which this fixture is shared, one of
|
|
"function" (default), "class", "module", "session".
|
|
|
|
:arg params: an optional list of parameters which will cause multiple
|
|
invocations of the fixture function and all of the tests
|
|
using it.
|
|
|
|
:arg autouse: if True, the fixture func is activated for all tests that
|
|
can see it. If False (the default) then an explicit
|
|
reference is needed to activate the fixture.
|
|
"""
|
|
if callable(scope) and params is None and autouse == False:
|
|
# direct decoration
|
|
return FixtureFunctionMarker("function", params, autouse)(scope)
|
|
else:
|
|
return FixtureFunctionMarker(scope, params, autouse=autouse)
|
|
|
|
defaultfuncargprefixmarker = fixture()
|
|
|
|
def pyobj_property(name):
|
|
def get(self):
|
|
node = self.getparent(getattr(pytest, name))
|
|
if node is not None:
|
|
return node.obj
|
|
doc = "python %s object this node was collected from (can be None)." % (
|
|
name.lower(),)
|
|
return property(get, None, None, doc)
|
|
|
|
|
|
def pytest_addoption(parser):
|
|
group = parser.getgroup("general")
|
|
group.addoption('--fixtures', '--funcargs',
|
|
action="store_true", dest="showfixtures", default=False,
|
|
help="show available fixtures, sorted by plugin appearance")
|
|
parser.addini("usefixtures", type="args", default=[],
|
|
help="list of default fixtures to be used with this project")
|
|
parser.addini("python_files", type="args",
|
|
default=('test_*.py', '*_test.py'),
|
|
help="glob-style file patterns for Python test module discovery")
|
|
parser.addini("python_classes", type="args", default=("Test",),
|
|
help="prefixes for Python test class discovery")
|
|
parser.addini("python_functions", type="args", default=("test",),
|
|
help="prefixes for Python test function and method discovery")
|
|
|
|
def pytest_cmdline_main(config):
|
|
if config.option.showfixtures:
|
|
showfixtures(config)
|
|
return 0
|
|
|
|
|
|
def pytest_generate_tests(metafunc):
|
|
try:
|
|
markers = metafunc.function.parametrize
|
|
except AttributeError:
|
|
return
|
|
for marker in markers:
|
|
metafunc.parametrize(*marker.args, **marker.kwargs)
|
|
|
|
def pytest_configure(config):
|
|
config.addinivalue_line("markers",
|
|
"parametrize(argnames, argvalues): call a test function multiple "
|
|
"times passing in multiple different argument value sets. Example: "
|
|
"@parametrize('arg1', [1,2]) would lead to two calls of the decorated "
|
|
"test function, one with arg1=1 and another with arg1=2."
|
|
" see http://pytest.org/latest/parametrize.html for more info and "
|
|
"examples."
|
|
)
|
|
config.addinivalue_line("markers",
|
|
"usefixtures(fixturename1, fixturename2, ...): mark tests as needing "
|
|
"all of the specified fixtures. see http://pytest.org/latest/fixture.html#usefixtures "
|
|
)
|
|
|
|
def pytest_sessionstart(session):
|
|
session._fixturemanager = FixtureManager(session)
|
|
|
|
@pytest.mark.trylast
|
|
def pytest_namespace():
|
|
raises.Exception = pytest.fail.Exception
|
|
return {
|
|
'fixture': fixture,
|
|
'raises' : raises,
|
|
'collect': {
|
|
'Module': Module, 'Class': Class, 'Instance': Instance,
|
|
'Function': Function, 'Generator': Generator,
|
|
'_fillfuncargs': fillfixtures}
|
|
}
|
|
|
|
@fixture()
|
|
def pytestconfig(request):
|
|
""" the pytest config object with access to command line opts."""
|
|
return request.config
|
|
|
|
|
|
def pytest_pyfunc_call(__multicall__, pyfuncitem):
|
|
if not __multicall__.execute():
|
|
testfunction = pyfuncitem.obj
|
|
if pyfuncitem._isyieldedfunction():
|
|
testfunction(*pyfuncitem._args)
|
|
else:
|
|
funcargs = pyfuncitem.funcargs
|
|
testargs = {}
|
|
for arg in pyfuncitem._fixtureinfo.argnames:
|
|
testargs[arg] = funcargs[arg]
|
|
testfunction(**testargs)
|
|
|
|
def pytest_collect_file(path, parent):
|
|
ext = path.ext
|
|
pb = path.purebasename
|
|
if ext == ".py":
|
|
if not parent.session.isinitpath(path):
|
|
for pat in parent.config.getini('python_files'):
|
|
if path.fnmatch(pat):
|
|
break
|
|
else:
|
|
return
|
|
ihook = parent.session.gethookproxy(path)
|
|
return ihook.pytest_pycollect_makemodule(path=path, parent=parent)
|
|
|
|
def pytest_pycollect_makemodule(path, parent):
|
|
return Module(path, parent)
|
|
|
|
def pytest_pycollect_makeitem(__multicall__, collector, name, obj):
|
|
res = __multicall__.execute()
|
|
if res is not None:
|
|
return res
|
|
if inspect.isclass(obj):
|
|
#if hasattr(collector.obj, 'unittest'):
|
|
# return # we assume it's a mixin class for a TestCase derived one
|
|
if collector.classnamefilter(name):
|
|
Class = collector._getcustomclass("Class")
|
|
return Class(name, parent=collector)
|
|
elif collector.funcnamefilter(name) and hasattr(obj, '__call__') and \
|
|
getfixturemarker(obj) is None:
|
|
if is_generator(obj):
|
|
return Generator(name, parent=collector)
|
|
else:
|
|
return list(collector._genfunctions(name, obj))
|
|
|
|
def is_generator(func):
|
|
try:
|
|
return py.code.getrawcode(func).co_flags & 32 # generator function
|
|
except AttributeError: # builtin functions have no bytecode
|
|
# assume them to not be generators
|
|
return False
|
|
|
|
class PyobjContext(object):
|
|
module = pyobj_property("Module")
|
|
cls = pyobj_property("Class")
|
|
instance = pyobj_property("Instance")
|
|
|
|
class PyobjMixin(PyobjContext):
|
|
def obj():
|
|
def fget(self):
|
|
try:
|
|
return self._obj
|
|
except AttributeError:
|
|
self._obj = obj = self._getobj()
|
|
return obj
|
|
def fset(self, value):
|
|
self._obj = value
|
|
return property(fget, fset, None, "underlying python object")
|
|
obj = obj()
|
|
|
|
def _getobj(self):
|
|
return getattr(self.parent.obj, self.name)
|
|
|
|
def getmodpath(self, stopatmodule=True, includemodule=False):
|
|
""" return python path relative to the containing module. """
|
|
chain = self.listchain()
|
|
chain.reverse()
|
|
parts = []
|
|
for node in chain:
|
|
if isinstance(node, Instance):
|
|
continue
|
|
name = node.name
|
|
if isinstance(node, Module):
|
|
assert name.endswith(".py")
|
|
name = name[:-3]
|
|
if stopatmodule:
|
|
if includemodule:
|
|
parts.append(name)
|
|
break
|
|
parts.append(name)
|
|
parts.reverse()
|
|
s = ".".join(parts)
|
|
return s.replace(".[", "[")
|
|
|
|
def _getfslineno(self):
|
|
return getfslineno(self.obj)
|
|
|
|
def reportinfo(self):
|
|
# XXX caching?
|
|
obj = self.obj
|
|
if hasattr(obj, 'compat_co_firstlineno'):
|
|
# nose compatibility
|
|
fspath = sys.modules[obj.__module__].__file__
|
|
if fspath.endswith(".pyc"):
|
|
fspath = fspath[:-1]
|
|
lineno = obj.compat_co_firstlineno
|
|
modpath = obj.__module__
|
|
else:
|
|
fspath, lineno = getfslineno(obj)
|
|
modpath = self.getmodpath()
|
|
assert isinstance(lineno, int)
|
|
return fspath, lineno, modpath
|
|
|
|
class PyCollector(PyobjMixin, pytest.Collector):
|
|
|
|
def funcnamefilter(self, name):
|
|
for prefix in self.config.getini("python_functions"):
|
|
if name.startswith(prefix):
|
|
return True
|
|
|
|
def classnamefilter(self, name):
|
|
for prefix in self.config.getini("python_classes"):
|
|
if name.startswith(prefix):
|
|
return True
|
|
|
|
def collect(self):
|
|
# NB. we avoid random getattrs and peek in the __dict__ instead
|
|
# (XXX originally introduced from a PyPy need, still true?)
|
|
dicts = [getattr(self.obj, '__dict__', {})]
|
|
for basecls in inspect.getmro(self.obj.__class__):
|
|
dicts.append(basecls.__dict__)
|
|
seen = {}
|
|
l = []
|
|
for dic in dicts:
|
|
for name, obj in dic.items():
|
|
if name in seen:
|
|
continue
|
|
seen[name] = True
|
|
res = self.makeitem(name, obj)
|
|
if res is None:
|
|
continue
|
|
if not isinstance(res, list):
|
|
res = [res]
|
|
l.extend(res)
|
|
l.sort(key=lambda item: item.reportinfo()[:2])
|
|
return l
|
|
|
|
def makeitem(self, name, obj):
|
|
#assert self.ihook.fspath == self.fspath, self
|
|
return self.ihook.pytest_pycollect_makeitem(
|
|
collector=self, name=name, obj=obj)
|
|
|
|
def _genfunctions(self, name, funcobj):
|
|
module = self.getparent(Module).obj
|
|
clscol = self.getparent(Class)
|
|
cls = clscol and clscol.obj or None
|
|
transfer_markers(funcobj, cls, module)
|
|
fm = self.session._fixturemanager
|
|
fixtureinfo = fm.getfixtureinfo(self, funcobj, cls)
|
|
metafunc = Metafunc(funcobj, fixtureinfo, self.config,
|
|
cls=cls, module=module)
|
|
gentesthook = self.config.hook.pytest_generate_tests
|
|
extra = [module]
|
|
if cls is not None:
|
|
extra.append(cls())
|
|
plugins = self.getplugins() + extra
|
|
gentesthook.pcall(plugins, metafunc=metafunc)
|
|
Function = self._getcustomclass("Function")
|
|
if not metafunc._calls:
|
|
yield Function(name, parent=self)
|
|
else:
|
|
for callspec in metafunc._calls:
|
|
subname = "%s[%s]" %(name, callspec.id)
|
|
yield Function(name=subname, parent=self,
|
|
callspec=callspec, callobj=funcobj,
|
|
keywords={callspec.id:True})
|
|
|
|
|
|
class FuncFixtureInfo:
|
|
def __init__(self, argnames, names_closure, name2fixturedefs):
|
|
self.argnames = argnames
|
|
self.names_closure = names_closure
|
|
self.name2fixturedefs = name2fixturedefs
|
|
|
|
def transfer_markers(funcobj, cls, mod):
|
|
# XXX this should rather be code in the mark plugin or the mark
|
|
# plugin should merge with the python plugin.
|
|
for holder in (cls, mod):
|
|
try:
|
|
pytestmark = holder.pytestmark
|
|
except AttributeError:
|
|
continue
|
|
if isinstance(pytestmark, list):
|
|
for mark in pytestmark:
|
|
mark(funcobj)
|
|
else:
|
|
pytestmark(funcobj)
|
|
|
|
class Module(pytest.File, PyCollector):
|
|
""" Collector for test classes and functions. """
|
|
def _getobj(self):
|
|
return self._memoizedcall('_obj', self._importtestmodule)
|
|
|
|
def collect(self):
|
|
self.session._fixturemanager.parsefactories(self)
|
|
return super(Module, self).collect()
|
|
|
|
def _importtestmodule(self):
|
|
# we assume we are only called once per module
|
|
try:
|
|
mod = self.fspath.pyimport(ensuresyspath=True)
|
|
except SyntaxError:
|
|
excinfo = py.code.ExceptionInfo()
|
|
raise self.CollectError(excinfo.getrepr(style="short"))
|
|
except self.fspath.ImportMismatchError:
|
|
e = sys.exc_info()[1]
|
|
raise self.CollectError(
|
|
"import file mismatch:\n"
|
|
"imported module %r has this __file__ attribute:\n"
|
|
" %s\n"
|
|
"which is not the same as the test file we want to collect:\n"
|
|
" %s\n"
|
|
"HINT: remove __pycache__ / .pyc files and/or use a "
|
|
"unique basename for your test file modules"
|
|
% e.args
|
|
)
|
|
#print "imported test module", mod
|
|
self.config.pluginmanager.consider_module(mod)
|
|
return mod
|
|
|
|
def setup(self):
|
|
setup_module = xunitsetup(self.obj, "setUpModule")
|
|
if setup_module is None:
|
|
setup_module = xunitsetup(self.obj, "setup_module")
|
|
if setup_module is not None:
|
|
#XXX: nose compat hack, move to nose plugin
|
|
# if it takes a positional arg, its probably a pytest style one
|
|
# so we pass the current module object
|
|
if inspect.getargspec(setup_module)[0]:
|
|
setup_module(self.obj)
|
|
else:
|
|
setup_module()
|
|
fin = getattr(self.obj, 'tearDownModule', None)
|
|
if fin is None:
|
|
fin = getattr(self.obj, 'teardown_module', None)
|
|
if fin is not None:
|
|
#XXX: nose compat hack, move to nose plugin
|
|
# if it takes a positional arg, its probably a py.test style one
|
|
# so we pass the current module object
|
|
if inspect.getargspec(fin)[0]:
|
|
finalizer = lambda: fin(self.obj)
|
|
else:
|
|
finalizer = fin
|
|
self.addfinalizer(finalizer)
|
|
|
|
|
|
class Class(PyCollector):
|
|
""" Collector for test methods. """
|
|
def collect(self):
|
|
if hasinit(self.obj):
|
|
pytest.skip("class %s.%s with __init__ won't get collected" % (
|
|
self.obj.__module__,
|
|
self.obj.__name__,
|
|
))
|
|
return [self._getcustomclass("Instance")(name="()", parent=self)]
|
|
|
|
def setup(self):
|
|
setup_class = xunitsetup(self.obj, 'setup_class')
|
|
if setup_class is not None:
|
|
setup_class = getattr(setup_class, 'im_func', setup_class)
|
|
setup_class = getattr(setup_class, '__func__', setup_class)
|
|
setup_class(self.obj)
|
|
|
|
fin_class = getattr(self.obj, 'teardown_class', None)
|
|
if fin_class is not None:
|
|
fin_class = getattr(fin_class, 'im_func', fin_class)
|
|
fin_class = getattr(fin_class, '__func__', fin_class)
|
|
self.addfinalizer(lambda: fin_class(self.obj))
|
|
|
|
class Instance(PyCollector):
|
|
def _getobj(self):
|
|
obj = self.parent.obj()
|
|
return obj
|
|
|
|
def collect(self):
|
|
self.session._fixturemanager.parsefactories(self)
|
|
return super(Instance, self).collect()
|
|
|
|
def newinstance(self):
|
|
self.obj = self._getobj()
|
|
return self.obj
|
|
|
|
class FunctionMixin(PyobjMixin):
|
|
""" mixin for the code common to Function and Generator.
|
|
"""
|
|
|
|
def setup(self):
|
|
""" perform setup for this test function. """
|
|
if hasattr(self, '_preservedparent'):
|
|
obj = self._preservedparent
|
|
elif isinstance(self.parent, Instance):
|
|
obj = self.parent.newinstance()
|
|
self.obj = self._getobj()
|
|
else:
|
|
obj = self.parent.obj
|
|
if inspect.ismethod(self.obj):
|
|
setup_name = 'setup_method'
|
|
teardown_name = 'teardown_method'
|
|
else:
|
|
setup_name = 'setup_function'
|
|
teardown_name = 'teardown_function'
|
|
setup_func_or_method = xunitsetup(obj, setup_name)
|
|
if setup_func_or_method is not None:
|
|
setup_func_or_method(self.obj)
|
|
fin = getattr(obj, teardown_name, None)
|
|
if fin is not None:
|
|
self.addfinalizer(lambda: fin(self.obj))
|
|
|
|
def _prunetraceback(self, excinfo):
|
|
if hasattr(self, '_obj') and not self.config.option.fulltrace:
|
|
code = py.code.Code(self.obj)
|
|
path, firstlineno = code.path, code.firstlineno
|
|
traceback = excinfo.traceback
|
|
ntraceback = traceback.cut(path=path, firstlineno=firstlineno)
|
|
if ntraceback == traceback:
|
|
ntraceback = ntraceback.cut(path=path)
|
|
if ntraceback == traceback:
|
|
ntraceback = ntraceback.cut(excludepath=cutdir)
|
|
excinfo.traceback = ntraceback.filter()
|
|
|
|
def _repr_failure_py(self, excinfo, style="long"):
|
|
if excinfo.errisinstance(pytest.fail.Exception):
|
|
if not excinfo.value.pytrace:
|
|
return str(excinfo.value)
|
|
return super(FunctionMixin, self)._repr_failure_py(excinfo,
|
|
style=style)
|
|
|
|
def repr_failure(self, excinfo, outerr=None):
|
|
assert outerr is None, "XXX outerr usage is deprecated"
|
|
return self._repr_failure_py(excinfo,
|
|
style=self.config.option.tbstyle)
|
|
|
|
|
|
class Generator(FunctionMixin, PyCollector):
|
|
def collect(self):
|
|
# test generators are seen as collectors but they also
|
|
# invoke setup/teardown on popular request
|
|
# (induced by the common "test_*" naming shared with normal tests)
|
|
self.session._setupstate.prepare(self)
|
|
# see FunctionMixin.setup and test_setupstate_is_preserved_134
|
|
self._preservedparent = self.parent.obj
|
|
l = []
|
|
seen = {}
|
|
for i, x in enumerate(self.obj()):
|
|
name, call, args = self.getcallargs(x)
|
|
if not callable(call):
|
|
raise TypeError("%r yielded non callable test %r" %(self.obj, call,))
|
|
if name is None:
|
|
name = "[%d]" % i
|
|
else:
|
|
name = "['%s']" % name
|
|
if name in seen:
|
|
raise ValueError("%r generated tests with non-unique name %r" %(self, name))
|
|
seen[name] = True
|
|
l.append(self.Function(name, self, args=args, callobj=call))
|
|
return l
|
|
|
|
def getcallargs(self, obj):
|
|
if not isinstance(obj, (tuple, list)):
|
|
obj = (obj,)
|
|
# explict naming
|
|
if isinstance(obj[0], py.builtin._basestring):
|
|
name = obj[0]
|
|
obj = obj[1:]
|
|
else:
|
|
name = None
|
|
call, args = obj[0], obj[1:]
|
|
return name, call, args
|
|
|
|
|
|
def hasinit(obj):
|
|
init = getattr(obj, '__init__', None)
|
|
if init:
|
|
if init != object.__init__:
|
|
return True
|
|
|
|
|
|
|
|
def fillfixtures(function):
|
|
""" fill missing funcargs for a test function. """
|
|
if 1 or getattr(function, "_args", None) is None: # not a yielded function
|
|
try:
|
|
request = function._request
|
|
except AttributeError:
|
|
# XXX this special code path is only expected to execute
|
|
# with the oejskit plugin. It uses classes with funcargs
|
|
# and we thus have to work a bit to allow this.
|
|
fm = function.session._fixturemanager
|
|
fi = fm.getfixtureinfo(function.parent, function.obj, None)
|
|
function._fixtureinfo = fi
|
|
request = function._request = FixtureRequest(function)
|
|
request._fillfixtures()
|
|
# prune out funcargs for jstests
|
|
newfuncargs = {}
|
|
for name in fi.argnames:
|
|
newfuncargs[name] = function.funcargs[name]
|
|
function.funcargs = newfuncargs
|
|
else:
|
|
request._fillfixtures()
|
|
|
|
|
|
_notexists = object()
|
|
|
|
class CallSpec2(object):
|
|
def __init__(self, metafunc):
|
|
self.metafunc = metafunc
|
|
self.funcargs = {}
|
|
self._idlist = []
|
|
self.params = {}
|
|
self._globalid = _notexists
|
|
self._globalid_args = set()
|
|
self._globalparam = _notexists
|
|
self._arg2scopenum = {} # used for sorting parametrized resources
|
|
self.keywords = {}
|
|
|
|
def copy(self, metafunc):
|
|
cs = CallSpec2(self.metafunc)
|
|
cs.funcargs.update(self.funcargs)
|
|
cs.params.update(self.params)
|
|
cs.keywords.update(self.keywords)
|
|
cs._arg2scopenum.update(self._arg2scopenum)
|
|
cs._idlist = list(self._idlist)
|
|
cs._globalid = self._globalid
|
|
cs._globalid_args = self._globalid_args
|
|
cs._globalparam = self._globalparam
|
|
return cs
|
|
|
|
def _checkargnotcontained(self, arg):
|
|
if arg in self.params or arg in self.funcargs:
|
|
raise ValueError("duplicate %r" %(arg,))
|
|
|
|
def getparam(self, name):
|
|
try:
|
|
return self.params[name]
|
|
except KeyError:
|
|
if self._globalparam is _notexists:
|
|
raise ValueError(name)
|
|
return self._globalparam
|
|
|
|
@property
|
|
def id(self):
|
|
return "-".join(map(str, filter(None, self._idlist)))
|
|
|
|
def setmulti(self, valtype, argnames, valset, id, keywords, scopenum=0):
|
|
for arg,val in zip(argnames, valset):
|
|
self._checkargnotcontained(arg)
|
|
getattr(self, valtype)[arg] = val
|
|
# we want self.params to be always set because of
|
|
# parametrize_sorted() which groups tests by params/scope
|
|
if valtype == "funcargs":
|
|
self.params[arg] = id
|
|
self._arg2scopenum[arg] = scopenum
|
|
if val is _notexists:
|
|
self._emptyparamspecified = True
|
|
self._idlist.append(id)
|
|
self.keywords.update(keywords)
|
|
|
|
def setall(self, funcargs, id, param):
|
|
for x in funcargs:
|
|
self._checkargnotcontained(x)
|
|
self.funcargs.update(funcargs)
|
|
if id is not _notexists:
|
|
self._idlist.append(id)
|
|
if param is not _notexists:
|
|
assert self._globalparam is _notexists
|
|
self._globalparam = param
|
|
|
|
|
|
class FuncargnamesCompatAttr:
|
|
""" helper class so that Metafunc, Function and FixtureRequest
|
|
don't need to each define the "funcargnames" compatibility attribute.
|
|
"""
|
|
@property
|
|
def funcargnames(self):
|
|
""" alias attribute for ``fixturenames`` for pre-2.3 compatibility"""
|
|
return self.fixturenames
|
|
|
|
class Metafunc(FuncargnamesCompatAttr):
|
|
def __init__(self, function, fixtureinfo, config, cls=None, module=None):
|
|
self.config = config
|
|
self.module = module
|
|
self.function = function
|
|
self.fixturenames = fixtureinfo.names_closure
|
|
self._arg2fixturedefs = fixtureinfo.name2fixturedefs
|
|
self.cls = cls
|
|
self.module = module
|
|
self._calls = []
|
|
self._ids = py.builtin.set()
|
|
|
|
def parametrize(self, argnames, argvalues, indirect=False, ids=None,
|
|
scope=None):
|
|
""" Add new invocations to the underlying test function using the list
|
|
of argvalues for the given argnames. Parametrization is performed
|
|
during the collection phase. If you need to setup expensive resources
|
|
see about setting indirect=True to do it rather at test setup time.
|
|
|
|
:arg argnames: a comma-separated string denoting one or more argument
|
|
names, or a list/tuple of argument strings.
|
|
|
|
:arg argvalues: The list of argvalues determines how often a
|
|
test is invoked with different argument values. If only one
|
|
argname was specified argvalues is a list of simple values. If N
|
|
argnames were specified, argvalues must be a list of N-tuples,
|
|
where each tuple-element specifies a value for its respective
|
|
argname.
|
|
|
|
:arg indirect: if True each argvalue corresponding to an argname will
|
|
be passed as request.param to its respective argname fixture
|
|
function so that it can perform more expensive setups during the
|
|
setup phase of a test rather than at collection time.
|
|
|
|
:arg ids: list of string ids each corresponding to the argvalues so
|
|
that they are part of the test id. If no ids are provided they will
|
|
be generated automatically from the argvalues.
|
|
|
|
:arg scope: if specified it denotes the scope of the parameters.
|
|
The scope is used for grouping tests by parameter instances.
|
|
It will also override any fixture-function defined scope, allowing
|
|
to set a dynamic scope using test context or configuration.
|
|
"""
|
|
|
|
# individual parametrized argument sets can be wrapped in a
|
|
# marker in which case we unwrap the values and apply the mark
|
|
# at Function init
|
|
newkeywords = {}
|
|
unwrapped_argvalues = []
|
|
for i, argval in enumerate(argvalues):
|
|
if isinstance(argval, MarkDecorator):
|
|
newmark = MarkDecorator(argval.markname,
|
|
argval.args[:-1], argval.kwargs)
|
|
newkeywords[i] = {newmark.markname: newmark}
|
|
argval = argval.args[-1]
|
|
unwrapped_argvalues.append(argval)
|
|
argvalues = unwrapped_argvalues
|
|
|
|
if not isinstance(argnames, (tuple, list)):
|
|
argnames = [x.strip() for x in argnames.split(",") if x.strip()]
|
|
if len(argnames) == 1:
|
|
argvalues = [(val,) for val in argvalues]
|
|
if not argvalues:
|
|
argvalues = [(_notexists,) * len(argnames)]
|
|
|
|
if scope is None:
|
|
scope = "subfunction"
|
|
scopenum = scopes.index(scope)
|
|
if not indirect:
|
|
#XXX should we also check for the opposite case?
|
|
for arg in argnames:
|
|
if arg not in self.fixturenames:
|
|
raise ValueError("%r uses no fixture %r" %(
|
|
self.function, arg))
|
|
valtype = indirect and "params" or "funcargs"
|
|
if ids and len(ids) != len(argvalues):
|
|
raise ValueError('%d tests specified with %d ids' %(
|
|
len(argvalues), len(ids)))
|
|
if not ids:
|
|
ids = idmaker(argnames, argvalues)
|
|
newcalls = []
|
|
for callspec in self._calls or [CallSpec2(self)]:
|
|
for i, valset in enumerate(argvalues):
|
|
assert len(valset) == len(argnames)
|
|
newcallspec = callspec.copy(self)
|
|
newcallspec.setmulti(valtype, argnames, valset, ids[i],
|
|
newkeywords.get(i, {}), scopenum)
|
|
newcalls.append(newcallspec)
|
|
self._calls = newcalls
|
|
|
|
def addcall(self, funcargs=None, id=_notexists, param=_notexists):
|
|
""" (deprecated, use parametrize) Add a new call to the underlying
|
|
test function during the collection phase of a test run. Note that
|
|
request.addcall() is called during the test collection phase prior and
|
|
independently to actual test execution. You should only use addcall()
|
|
if you need to specify multiple arguments of a test function.
|
|
|
|
:arg funcargs: argument keyword dictionary used when invoking
|
|
the test function.
|
|
|
|
:arg id: used for reporting and identification purposes. If you
|
|
don't supply an `id` an automatic unique id will be generated.
|
|
|
|
:arg param: a parameter which will be exposed to a later fixture function
|
|
invocation through the ``request.param`` attribute.
|
|
"""
|
|
assert funcargs is None or isinstance(funcargs, dict)
|
|
if funcargs is not None:
|
|
for name in funcargs:
|
|
if name not in self.fixturenames:
|
|
pytest.fail("funcarg %r not used in this function." % name)
|
|
else:
|
|
funcargs = {}
|
|
if id is None:
|
|
raise ValueError("id=None not allowed")
|
|
if id is _notexists:
|
|
id = len(self._calls)
|
|
id = str(id)
|
|
if id in self._ids:
|
|
raise ValueError("duplicate id %r" % id)
|
|
self._ids.add(id)
|
|
|
|
cs = CallSpec2(self)
|
|
cs.setall(funcargs, id, param)
|
|
self._calls.append(cs)
|
|
|
|
def idmaker(argnames, argvalues):
|
|
idlist = []
|
|
for valindex, valset in enumerate(argvalues):
|
|
this_id = []
|
|
for nameindex, val in enumerate(valset):
|
|
if not isinstance(val, (float, int, str, bool, NoneType)):
|
|
this_id.append(str(argnames[nameindex])+str(valindex))
|
|
else:
|
|
this_id.append(str(val))
|
|
idlist.append("-".join(this_id))
|
|
return idlist
|
|
|
|
def showfixtures(config):
|
|
from _pytest.main import wrap_session
|
|
return wrap_session(config, _showfixtures_main)
|
|
|
|
def _showfixtures_main(config, session):
|
|
session.perform_collect()
|
|
curdir = py.path.local()
|
|
if session.items:
|
|
nodeid = session.items[0].nodeid
|
|
else:
|
|
part = session._initialparts[0]
|
|
nodeid = "::".join(map(str, [curdir.bestrelpath(part[0])] + part[1:]))
|
|
nodeid.replace(session.fspath.sep, "/")
|
|
|
|
tw = py.io.TerminalWriter()
|
|
verbose = config.getvalue("verbose")
|
|
|
|
fm = session._fixturemanager
|
|
|
|
available = []
|
|
for argname in fm._arg2fixturedefs:
|
|
fixturedefs = fm.getfixturedefs(argname, nodeid)
|
|
assert fixturedefs is not None
|
|
if not fixturedefs:
|
|
continue
|
|
fixturedef = fixturedefs[-1]
|
|
loc = getlocation(fixturedef.func, curdir)
|
|
available.append((len(fixturedef.baseid),
|
|
fixturedef.func.__module__,
|
|
curdir.bestrelpath(loc),
|
|
fixturedef.argname, fixturedef))
|
|
|
|
available.sort()
|
|
currentmodule = None
|
|
for baseid, module, bestrel, argname, fixturedef in available:
|
|
if currentmodule != module:
|
|
if not module.startswith("_pytest."):
|
|
tw.line()
|
|
tw.sep("-", "fixtures defined from %s" %(module,))
|
|
currentmodule = module
|
|
if verbose <= 0 and argname[0] == "_":
|
|
continue
|
|
if verbose > 0:
|
|
funcargspec = "%s -- %s" %(argname, bestrel,)
|
|
else:
|
|
funcargspec = argname
|
|
tw.line(funcargspec, green=True)
|
|
loc = getlocation(fixturedef.func, curdir)
|
|
doc = fixturedef.func.__doc__ or ""
|
|
if doc:
|
|
for line in doc.split("\n"):
|
|
tw.line(" " + line.strip())
|
|
else:
|
|
tw.line(" %s: no docstring available" %(loc,),
|
|
red=True)
|
|
|
|
def getlocation(function, curdir):
|
|
import inspect
|
|
fn = py.path.local(inspect.getfile(function))
|
|
lineno = py.builtin._getcode(function).co_firstlineno
|
|
if fn.relto(curdir):
|
|
fn = fn.relto(curdir)
|
|
return "%s:%d" %(fn, lineno+1)
|
|
|
|
# builtin pytest.raises helper
|
|
|
|
def raises(ExpectedException, *args, **kwargs):
|
|
""" assert that a code block/function call raises @ExpectedException
|
|
and raise a failure exception otherwise.
|
|
|
|
This helper produces a ``py.code.ExceptionInfo()`` object.
|
|
|
|
If using Python 2.5 or above, you may use this function as a
|
|
context manager::
|
|
|
|
>>> with raises(ZeroDivisionError):
|
|
... 1/0
|
|
|
|
Or you can specify a callable by passing a to-be-called lambda::
|
|
|
|
>>> raises(ZeroDivisionError, lambda: 1/0)
|
|
<ExceptionInfo ...>
|
|
|
|
or you can specify an arbitrary callable with arguments::
|
|
|
|
>>> def f(x): return 1/x
|
|
...
|
|
>>> raises(ZeroDivisionError, f, 0)
|
|
<ExceptionInfo ...>
|
|
>>> raises(ZeroDivisionError, f, x=0)
|
|
<ExceptionInfo ...>
|
|
|
|
A third possibility is to use a string to be executed::
|
|
|
|
>>> raises(ZeroDivisionError, "f(0)")
|
|
<ExceptionInfo ...>
|
|
"""
|
|
__tracebackhide__ = True
|
|
if ExpectedException is AssertionError:
|
|
# we want to catch a AssertionError
|
|
# replace our subclass with the builtin one
|
|
# see https://bitbucket.org/hpk42/pytest/issue/176/pytestraises
|
|
from _pytest.assertion.util import BuiltinAssertionError as ExpectedException
|
|
|
|
if not args:
|
|
return RaisesContext(ExpectedException)
|
|
elif isinstance(args[0], str):
|
|
code, = args
|
|
assert isinstance(code, str)
|
|
frame = sys._getframe(1)
|
|
loc = frame.f_locals.copy()
|
|
loc.update(kwargs)
|
|
#print "raises frame scope: %r" % frame.f_locals
|
|
try:
|
|
code = py.code.Source(code).compile()
|
|
py.builtin.exec_(code, frame.f_globals, loc)
|
|
# XXX didn'T mean f_globals == f_locals something special?
|
|
# this is destroyed here ...
|
|
except ExpectedException:
|
|
return py.code.ExceptionInfo()
|
|
else:
|
|
func = args[0]
|
|
try:
|
|
func(*args[1:], **kwargs)
|
|
except ExpectedException:
|
|
return py.code.ExceptionInfo()
|
|
k = ", ".join(["%s=%r" % x for x in kwargs.items()])
|
|
if k:
|
|
k = ', ' + k
|
|
expr = '%s(%r%s)' %(getattr(func, '__name__', func), args, k)
|
|
pytest.fail("DID NOT RAISE")
|
|
|
|
class RaisesContext(object):
|
|
def __init__(self, ExpectedException):
|
|
self.ExpectedException = ExpectedException
|
|
self.excinfo = None
|
|
|
|
def __enter__(self):
|
|
self.excinfo = object.__new__(py.code.ExceptionInfo)
|
|
return self.excinfo
|
|
|
|
def __exit__(self, *tp):
|
|
__tracebackhide__ = True
|
|
if tp[0] is None:
|
|
pytest.fail("DID NOT RAISE")
|
|
self.excinfo.__init__(tp)
|
|
return issubclass(self.excinfo.type, self.ExpectedException)
|
|
|
|
#
|
|
# the basic py.test Function item
|
|
#
|
|
_dummy = object()
|
|
class Function(FunctionMixin, pytest.Item, FuncargnamesCompatAttr):
|
|
""" a Function Item is responsible for setting up and executing a
|
|
Python test function.
|
|
"""
|
|
_genid = None
|
|
def __init__(self, name, parent, args=None, config=None,
|
|
callspec=None, callobj=_dummy, keywords=None, session=None):
|
|
super(Function, self).__init__(name, parent, config=config,
|
|
session=session)
|
|
self._args = args
|
|
if callobj is not _dummy:
|
|
self.obj = callobj
|
|
|
|
for name, val in (py.builtin._getfuncdict(self.obj) or {}).items():
|
|
self.keywords[name] = val
|
|
if callspec:
|
|
for name, val in callspec.keywords.items():
|
|
self.keywords[name] = val
|
|
if keywords:
|
|
for name, val in keywords.items():
|
|
self.keywords[name] = val
|
|
|
|
fm = self.session._fixturemanager
|
|
isyield = self._isyieldedfunction()
|
|
self._fixtureinfo = fi = fm.getfixtureinfo(self.parent, self.obj,
|
|
self.cls,
|
|
funcargs=not isyield)
|
|
self.fixturenames = fi.names_closure
|
|
if callspec is not None:
|
|
self.callspec = callspec
|
|
self._initrequest()
|
|
|
|
def _initrequest(self):
|
|
if self._isyieldedfunction():
|
|
assert not hasattr(self, "callspec"), (
|
|
"yielded functions (deprecated) cannot have funcargs")
|
|
self.funcargs = {}
|
|
else:
|
|
if hasattr(self, "callspec"):
|
|
callspec = self.callspec
|
|
self.funcargs = callspec.funcargs.copy()
|
|
self._genid = callspec.id
|
|
if hasattr(callspec, "param"):
|
|
self.param = callspec.param
|
|
else:
|
|
self.funcargs = {}
|
|
self._request = FixtureRequest(self)
|
|
|
|
@property
|
|
def function(self):
|
|
"underlying python 'function' object"
|
|
return getattr(self.obj, 'im_func', self.obj)
|
|
|
|
def _getobj(self):
|
|
name = self.name
|
|
i = name.find("[") # parametrization
|
|
if i != -1:
|
|
name = name[:i]
|
|
return getattr(self.parent.obj, name)
|
|
|
|
@property
|
|
def _pyfuncitem(self):
|
|
"(compatonly) for code expecting pytest-2.2 style request objects"
|
|
return self
|
|
|
|
def _isyieldedfunction(self):
|
|
return getattr(self, "_args", None) is not None
|
|
|
|
def runtest(self):
|
|
""" execute the underlying test function. """
|
|
self.ihook.pytest_pyfunc_call(pyfuncitem=self)
|
|
|
|
def setup(self):
|
|
# check if parametrization happend with an empty list
|
|
try:
|
|
empty = self.callspec._emptyparamspecified
|
|
except AttributeError:
|
|
pass
|
|
else:
|
|
fs, lineno = self._getfslineno()
|
|
pytest.skip("got empty parameter set, function %s at %s:%d" %(
|
|
self.function.__name__, fs, lineno))
|
|
super(Function, self).setup()
|
|
fillfixtures(self)
|
|
|
|
def __eq__(self, other):
|
|
try:
|
|
return (self.name == other.name and
|
|
self._args == other._args and
|
|
self.parent == other.parent and
|
|
self.obj == other.obj and
|
|
getattr(self, '_genid', None) ==
|
|
getattr(other, '_genid', None)
|
|
)
|
|
except AttributeError:
|
|
pass
|
|
return False
|
|
|
|
def __ne__(self, other):
|
|
return not self == other
|
|
|
|
def __hash__(self):
|
|
return hash((self.parent, self.name))
|
|
|
|
scope2props = dict(session=())
|
|
scope2props["module"] = ("fspath", "module")
|
|
scope2props["class"] = scope2props["module"] + ("cls",)
|
|
scope2props["instance"] = scope2props["class"] + ("instance", )
|
|
scope2props["function"] = scope2props["instance"] + ("function", "keywords")
|
|
|
|
def scopeproperty(name=None, doc=None):
|
|
def decoratescope(func):
|
|
scopename = name or func.__name__
|
|
def provide(self):
|
|
if func.__name__ in scope2props[self.scope]:
|
|
return func(self)
|
|
raise AttributeError("%s not available in %s-scoped context" % (
|
|
scopename, self.scope))
|
|
return property(provide, None, None, func.__doc__)
|
|
return decoratescope
|
|
|
|
|
|
class FixtureRequest(FuncargnamesCompatAttr):
|
|
""" A request for a fixture from a test or fixture function.
|
|
|
|
A request object gives access to the requesting test context
|
|
and has an optional ``param`` attribute in case
|
|
the fixture is parametrized indirectly.
|
|
"""
|
|
|
|
def __init__(self, pyfuncitem):
|
|
self._pyfuncitem = pyfuncitem
|
|
if hasattr(pyfuncitem, '_requestparam'):
|
|
self.param = pyfuncitem._requestparam
|
|
#: fixture for which this request is being performed
|
|
self.fixturename = None
|
|
#: Scope string, one of "function", "cls", "module", "session"
|
|
self.scope = "function"
|
|
self.getparent = pyfuncitem.getparent
|
|
self._funcargs = self._pyfuncitem.funcargs.copy()
|
|
self._fixtureinfo = fi = pyfuncitem._fixtureinfo
|
|
self._arg2fixturedefs = fi.name2fixturedefs
|
|
self._arg2index = {}
|
|
self.fixturenames = self._fixtureinfo.names_closure
|
|
self._fixturemanager = pyfuncitem.session._fixturemanager
|
|
self._parentid = pyfuncitem.parent.nodeid
|
|
self._fixturestack = []
|
|
|
|
@property
|
|
def node(self):
|
|
""" underlying collection node (depends on current request scope)"""
|
|
return self._getscopeitem(self.scope)
|
|
|
|
def _getnextfixturedef(self, argname):
|
|
fixturedefs = self._arg2fixturedefs.get(argname, None)
|
|
if fixturedefs is None:
|
|
# we arrive here because of a getfuncargvalue(argname) usage which
|
|
# was naturally not knowable at parsing/collection time
|
|
fixturedefs = self._fixturemanager.getfixturedefs(
|
|
argname, self._parentid)
|
|
self._arg2fixturedefs[argname] = fixturedefs
|
|
# fixturedefs is immutable so we maintain a decreasing index
|
|
index = self._arg2index.get(argname, 0) - 1
|
|
if fixturedefs is None or (-index > len(fixturedefs)):
|
|
raise FixtureLookupError(argname, self)
|
|
self._arg2index[argname] = index
|
|
return fixturedefs[index]
|
|
|
|
@property
|
|
def config(self):
|
|
""" the pytest config object associated with this request. """
|
|
return self._pyfuncitem.config
|
|
|
|
|
|
@scopeproperty()
|
|
def function(self):
|
|
""" test function object if the request has a per-function scope. """
|
|
return self._pyfuncitem.obj
|
|
|
|
@scopeproperty("class")
|
|
def cls(self):
|
|
""" class (can be None) where the test function was collected. """
|
|
clscol = self._pyfuncitem.getparent(pytest.Class)
|
|
if clscol:
|
|
return clscol.obj
|
|
|
|
@property
|
|
def instance(self):
|
|
""" instance (can be None) on which test function was collected. """
|
|
# unittest support hack, see _pytest.unittest.TestCaseFunction
|
|
try:
|
|
return self._pyfuncitem._testcase
|
|
except AttributeError:
|
|
return py.builtin._getimself(self.function)
|
|
|
|
@scopeproperty()
|
|
def module(self):
|
|
""" python module object where the test function was collected. """
|
|
return self._pyfuncitem.getparent(pytest.Module).obj
|
|
|
|
@scopeproperty()
|
|
def fspath(self):
|
|
""" the file system path of the test module which collected this test. """
|
|
return self._pyfuncitem.fspath
|
|
|
|
@property
|
|
def keywords(self):
|
|
""" keywords/markers dictionary for the underlying node. """
|
|
return self.node.keywords
|
|
|
|
@property
|
|
def session(self):
|
|
""" pytest session object. """
|
|
return self._pyfuncitem.session
|
|
|
|
def addfinalizer(self, finalizer):
|
|
"""add finalizer/teardown function to be called after the
|
|
last test within the requesting test context finished
|
|
execution. """
|
|
# XXX usually this method is shadowed by fixturedef specific ones
|
|
self._addfinalizer(finalizer, scope=self.scope)
|
|
|
|
def _addfinalizer(self, finalizer, scope):
|
|
if scope != "function" and hasattr(self, "param"):
|
|
# parametrized resources are sorted by param
|
|
# so we rather store finalizers per (argname, param)
|
|
colitem = (self.fixturename, self.param)
|
|
else:
|
|
colitem = self._getscopeitem(scope)
|
|
self._pyfuncitem.session._setupstate.addfinalizer(
|
|
finalizer=finalizer, colitem=colitem)
|
|
|
|
def applymarker(self, marker):
|
|
""" Apply a marker to a single test function invocation.
|
|
This method is useful if you don't want to have a keyword/marker
|
|
on all function invocations.
|
|
|
|
:arg marker: a :py:class:`_pytest.mark.MarkDecorator` object
|
|
created by a call to ``py.test.mark.NAME(...)``.
|
|
"""
|
|
try:
|
|
self.node.keywords[marker.markname] = marker
|
|
except AttributeError:
|
|
raise ValueError(marker)
|
|
|
|
def raiseerror(self, msg):
|
|
""" raise a FixtureLookupError with the given message. """
|
|
raise self._fixturemanager.FixtureLookupError(None, self, msg)
|
|
|
|
def _fillfixtures(self):
|
|
item = self._pyfuncitem
|
|
fixturenames = getattr(item, "fixturenames", self.fixturenames)
|
|
for argname in fixturenames:
|
|
if argname not in item.funcargs:
|
|
item.funcargs[argname] = self.getfuncargvalue(argname)
|
|
|
|
def cached_setup(self, setup, teardown=None, scope="module", extrakey=None):
|
|
""" (deprecated) Return a testing resource managed by ``setup`` &
|
|
``teardown`` calls. ``scope`` and ``extrakey`` determine when the
|
|
``teardown`` function will be called so that subsequent calls to
|
|
``setup`` would recreate the resource. With pytest-2.3 you often
|
|
do not need ``cached_setup()`` as you can directly declare a scope
|
|
on a fixture function and register a finalizer through
|
|
``request.addfinalizer()``.
|
|
|
|
:arg teardown: function receiving a previously setup resource.
|
|
:arg setup: a no-argument function creating a resource.
|
|
:arg scope: a string value out of ``function``, ``class``, ``module``
|
|
or ``session`` indicating the caching lifecycle of the resource.
|
|
:arg extrakey: added to internal caching key of (funcargname, scope).
|
|
"""
|
|
if not hasattr(self.config, '_setupcache'):
|
|
self.config._setupcache = {} # XXX weakref?
|
|
cachekey = (self.fixturename, self._getscopeitem(scope), extrakey)
|
|
cache = self.config._setupcache
|
|
try:
|
|
val = cache[cachekey]
|
|
except KeyError:
|
|
__tracebackhide__ = True
|
|
if scopemismatch(self.scope, scope):
|
|
raise ScopeMismatchError("You tried to access a %r scoped "
|
|
"resource with a %r scoped request object" %(
|
|
(scope, self.scope)))
|
|
__tracebackhide__ = False
|
|
val = setup()
|
|
cache[cachekey] = val
|
|
if teardown is not None:
|
|
def finalizer():
|
|
del cache[cachekey]
|
|
teardown(val)
|
|
self._addfinalizer(finalizer, scope=scope)
|
|
return val
|
|
|
|
def getfuncargvalue(self, argname):
|
|
""" Dynamically retrieve a named fixture function argument.
|
|
|
|
As of pytest-2.3, it is easier and usually better to access other
|
|
fixture values by stating it as an input argument in the fixture
|
|
function. If you only can decide about using another fixture at test
|
|
setup time, you may use this function to retrieve it inside a fixture
|
|
function body.
|
|
"""
|
|
try:
|
|
return self._funcargs[argname]
|
|
except KeyError:
|
|
pass
|
|
try:
|
|
fixturedef = self._getnextfixturedef(argname)
|
|
except FixtureLookupError:
|
|
if argname == "request":
|
|
return self
|
|
raise
|
|
self._fixturestack.append(fixturedef)
|
|
try:
|
|
result = self._getfuncargvalue(fixturedef)
|
|
self._funcargs[argname] = result
|
|
return result
|
|
finally:
|
|
self._fixturestack.pop()
|
|
|
|
def _getfuncargvalue(self, fixturedef):
|
|
try:
|
|
return fixturedef.cached_result # set by fixturedef.execute()
|
|
except AttributeError:
|
|
pass
|
|
|
|
# prepare request fixturename and param attributes before
|
|
# calling into fixture function
|
|
argname = fixturedef.argname
|
|
node = self._pyfuncitem
|
|
mp = monkeypatch()
|
|
mp.setattr(self, 'fixturename', argname)
|
|
try:
|
|
param = node.callspec.getparam(argname)
|
|
except (AttributeError, ValueError):
|
|
pass
|
|
else:
|
|
mp.setattr(self, 'param', param, raising=False)
|
|
|
|
# if a parametrize invocation set a scope it will override
|
|
# the static scope defined with the fixture function
|
|
scope = fixturedef.scope
|
|
try:
|
|
paramscopenum = node.callspec._arg2scopenum[argname]
|
|
except (KeyError, AttributeError):
|
|
pass
|
|
else:
|
|
if paramscopenum != scopenum_subfunction:
|
|
scope = scopes[paramscopenum]
|
|
|
|
# check if a higher-level scoped fixture accesses a lower level one
|
|
if scope is not None:
|
|
__tracebackhide__ = True
|
|
if scopemismatch(self.scope, scope):
|
|
# try to report something helpful
|
|
lines = self._factorytraceback()
|
|
raise ScopeMismatchError("You tried to access the %r scoped "
|
|
"funcarg %r with a %r scoped request object, "
|
|
"involved factories\n%s" %(
|
|
(scope, argname, self.scope, "\n".join(lines))))
|
|
__tracebackhide__ = False
|
|
mp.setattr(self, "scope", scope)
|
|
|
|
# route request.addfinalizer to fixturedef
|
|
mp.setattr(self, "addfinalizer", fixturedef.addfinalizer)
|
|
|
|
try:
|
|
# perform the fixture call
|
|
val = fixturedef.execute(request=self)
|
|
finally:
|
|
# if the fixture function failed it might still have
|
|
# registered finalizers so we can register
|
|
|
|
# prepare finalization according to scope
|
|
# (XXX analyse exact finalizing mechanics / cleanup)
|
|
self.session._setupstate.addfinalizer(fixturedef.finish,
|
|
self.node)
|
|
self._fixturemanager.addargfinalizer(fixturedef.finish, argname)
|
|
for subargname in fixturedef.argnames: # XXX all deps?
|
|
self._fixturemanager.addargfinalizer(fixturedef.finish,
|
|
subargname)
|
|
mp.undo()
|
|
return val
|
|
|
|
def _factorytraceback(self):
|
|
lines = []
|
|
for fixturedef in self._fixturestack:
|
|
factory = fixturedef.func
|
|
fs, lineno = getfslineno(factory)
|
|
p = self._pyfuncitem.session.fspath.bestrelpath(fs)
|
|
args = inspect.formatargspec(*inspect.getargspec(factory))
|
|
lines.append("%s:%d: def %s%s" %(
|
|
p, lineno, factory.__name__, args))
|
|
return lines
|
|
|
|
def _getscopeitem(self, scope):
|
|
if scope == "function":
|
|
return self._pyfuncitem
|
|
elif scope == "session":
|
|
return self.session
|
|
elif scope == "class":
|
|
x = self._pyfuncitem.getparent(pytest.Class)
|
|
if x is not None:
|
|
return x
|
|
# fallback to function
|
|
return self._pyfuncitem
|
|
if scope == "module":
|
|
return self._pyfuncitem.getparent(pytest.Module)
|
|
raise ValueError("unknown finalization scope %r" %(scope,))
|
|
|
|
def __repr__(self):
|
|
return "<FixtureRequest for %r>" %(self.node)
|
|
|
|
class ScopeMismatchError(Exception):
|
|
""" A fixture function tries to use a different fixture function which
|
|
which has a lower scope (e.g. a Session one calls a function one)
|
|
"""
|
|
|
|
scopes = "session module class function subfunction".split()
|
|
scopenum_subfunction = scopes.index("subfunction")
|
|
def scopemismatch(currentscope, newscope):
|
|
return scopes.index(newscope) > scopes.index(currentscope)
|
|
|
|
class FixtureLookupError(LookupError):
|
|
""" could not return a requested Fixture (missing or invalid). """
|
|
def __init__(self, argname, request, msg=None):
|
|
self.argname = argname
|
|
self.request = request
|
|
self.fixturestack = list(request._fixturestack)
|
|
self.msg = msg
|
|
|
|
def formatrepr(self):
|
|
tblines = []
|
|
addline = tblines.append
|
|
stack = [self.request._pyfuncitem.obj]
|
|
stack.extend(map(lambda x: x.func, self.fixturestack))
|
|
msg = self.msg
|
|
if msg is not None:
|
|
stack = stack[:-1] # the last fixture raise an error, let's present
|
|
# it at the requesting side
|
|
for function in stack:
|
|
fspath, lineno = getfslineno(function)
|
|
lines, _ = inspect.getsourcelines(function)
|
|
addline("file %s, line %s" % (fspath, lineno+1))
|
|
for i, line in enumerate(lines):
|
|
line = line.rstrip()
|
|
addline(" " + line)
|
|
if line.lstrip().startswith('def'):
|
|
break
|
|
|
|
if msg is None:
|
|
fm = self.request._fixturemanager
|
|
nodeid = self.request._parentid
|
|
available = []
|
|
for name, fixturedef in fm._arg2fixturedefs.items():
|
|
faclist = list(fm._matchfactories(fixturedef, self.request._parentid))
|
|
if faclist:
|
|
available.append(name)
|
|
msg = "fixture %r not found" % (self.argname,)
|
|
msg += "\n available fixtures: %s" %(", ".join(available),)
|
|
msg += "\n use 'py.test --fixtures [testpath]' for help on them."
|
|
|
|
return FixtureLookupErrorRepr(fspath, lineno, tblines, msg, self.argname)
|
|
|
|
class FixtureLookupErrorRepr(TerminalRepr):
|
|
def __init__(self, filename, firstlineno, tblines, errorstring, argname):
|
|
self.tblines = tblines
|
|
self.errorstring = errorstring
|
|
self.filename = filename
|
|
self.firstlineno = firstlineno
|
|
self.argname = argname
|
|
|
|
def toterminal(self, tw):
|
|
#tw.line("FixtureLookupError: %s" %(self.argname), red=True)
|
|
for tbline in self.tblines:
|
|
tw.line(tbline.rstrip())
|
|
for line in self.errorstring.split("\n"):
|
|
tw.line(" " + line.strip(), red=True)
|
|
tw.line()
|
|
tw.line("%s:%d" % (self.filename, self.firstlineno+1))
|
|
|
|
class FixtureManager:
|
|
"""
|
|
pytest fixtures definitions and information is stored and managed
|
|
from this class.
|
|
|
|
During collection fm.parsefactories() is called multiple times to parse
|
|
fixture function definitions into FixtureDef objects and internal
|
|
data structures.
|
|
|
|
During collection of test functions, metafunc-mechanics instantiate
|
|
a FuncFixtureInfo object which is cached per node/func-name.
|
|
This FuncFixtureInfo object is later retrieved by Function nodes
|
|
which themselves offer a fixturenames attribute.
|
|
|
|
The FuncFixtureInfo object holds information about fixtures and FixtureDefs
|
|
relevant for a particular function. An initial list of fixtures is
|
|
assembled like this:
|
|
|
|
- ini-defined usefixtures
|
|
- autouse-marked fixtures along the collection chain up from the function
|
|
- usefixtures markers at module/class/function level
|
|
- test function funcargs
|
|
|
|
Subsequently the funcfixtureinfo.fixturenames attribute is computed
|
|
as the closure of the fixtures needed to setup the initial fixtures,
|
|
i. e. fixtures needed by fixture functions themselves are appended
|
|
to the fixturenames list.
|
|
|
|
Upon the test-setup phases all fixturenames are instantiated, retrieved
|
|
by a lookup of their FuncFixtureInfo.
|
|
"""
|
|
|
|
_argprefix = "pytest_funcarg__"
|
|
FixtureLookupError = FixtureLookupError
|
|
FixtureLookupErrorRepr = FixtureLookupErrorRepr
|
|
|
|
def __init__(self, session):
|
|
self.session = session
|
|
self.config = session.config
|
|
self._arg2fixturedefs = {}
|
|
self._seenplugins = set()
|
|
self._holderobjseen = set()
|
|
self._arg2finish = {}
|
|
self._nodeid_and_autousenames = [("", self.config.getini("usefixtures"))]
|
|
session.config.pluginmanager.register(self, "funcmanage")
|
|
|
|
self._nodename2fixtureinfo = {}
|
|
|
|
def getfixtureinfo(self, node, func, cls, funcargs=True):
|
|
key = (node, func.__name__)
|
|
try:
|
|
return self._nodename2fixtureinfo[key]
|
|
except KeyError:
|
|
pass
|
|
if funcargs and not hasattr(node, "nofuncargs"):
|
|
if cls is not None:
|
|
startindex = 1
|
|
else:
|
|
startindex = None
|
|
argnames = getfuncargnames(func, startindex)
|
|
else:
|
|
argnames = ()
|
|
usefixtures = getattr(func, "usefixtures", None)
|
|
initialnames = argnames
|
|
if usefixtures is not None:
|
|
initialnames = usefixtures.args + initialnames
|
|
fm = node.session._fixturemanager
|
|
names_closure, arg2fixturedefs = fm.getfixtureclosure(initialnames,
|
|
node)
|
|
fixtureinfo = FuncFixtureInfo(argnames, names_closure,
|
|
arg2fixturedefs)
|
|
self._nodename2fixtureinfo[key] = fixtureinfo
|
|
return fixtureinfo
|
|
|
|
### XXX this hook should be called for historic events like pytest_configure
|
|
### so that we don't have to do the below pytest_configure hook
|
|
def pytest_plugin_registered(self, plugin):
|
|
if plugin in self._seenplugins:
|
|
return
|
|
nodeid = None
|
|
try:
|
|
p = py.path.local(plugin.__file__)
|
|
except AttributeError:
|
|
pass
|
|
else:
|
|
if p.basename.startswith("conftest.py"):
|
|
nodeid = p.dirpath().relto(self.session.fspath)
|
|
if p.sep != "/":
|
|
nodeid = nodeid.replace(p.sep, "/")
|
|
self.parsefactories(plugin, nodeid)
|
|
self._seenplugins.add(plugin)
|
|
|
|
@pytest.mark.tryfirst
|
|
def pytest_configure(self, config):
|
|
plugins = config.pluginmanager.getplugins()
|
|
for plugin in plugins:
|
|
self.pytest_plugin_registered(plugin)
|
|
|
|
def _getautousenames(self, nodeid):
|
|
""" return a tuple of fixture names to be used. """
|
|
autousenames = []
|
|
for baseid, basenames in self._nodeid_and_autousenames:
|
|
if nodeid.startswith(baseid):
|
|
if baseid:
|
|
i = len(baseid)
|
|
nextchar = nodeid[i:i+1]
|
|
if nextchar and nextchar not in ":/":
|
|
continue
|
|
autousenames.extend(basenames)
|
|
# make sure autousenames are sorted by scope, scopenum 0 is session
|
|
autousenames.sort(
|
|
key=lambda x: self._arg2fixturedefs[x][-1].scopenum)
|
|
return autousenames
|
|
|
|
def getfixtureclosure(self, fixturenames, parentnode):
|
|
# collect the closure of all fixtures , starting with the given
|
|
# fixturenames as the initial set. As we have to visit all
|
|
# factory definitions anyway, we also return a arg2fixturedefs
|
|
# mapping so that the caller can reuse it and does not have
|
|
# to re-discover fixturedefs again for each fixturename
|
|
# (discovering matching fixtures for a given name/node is expensive)
|
|
|
|
parentid = parentnode.nodeid
|
|
fixturenames_closure = self._getautousenames(parentid)
|
|
def merge(otherlist):
|
|
for arg in otherlist:
|
|
if arg not in fixturenames_closure:
|
|
fixturenames_closure.append(arg)
|
|
merge(fixturenames)
|
|
arg2fixturedefs = {}
|
|
lastlen = -1
|
|
while lastlen != len(fixturenames_closure):
|
|
lastlen = len(fixturenames_closure)
|
|
for argname in fixturenames_closure:
|
|
if argname in arg2fixturedefs:
|
|
continue
|
|
fixturedefs = self.getfixturedefs(argname, parentid)
|
|
arg2fixturedefs[argname] = fixturedefs
|
|
if fixturedefs is not None:
|
|
for fixturedef in fixturedefs:
|
|
merge(fixturedef.argnames)
|
|
return fixturenames_closure, arg2fixturedefs
|
|
|
|
def pytest_generate_tests(self, metafunc):
|
|
for argname in metafunc.fixturenames:
|
|
faclist = metafunc._arg2fixturedefs[argname]
|
|
if faclist is None:
|
|
continue # will raise FixtureLookupError at setup time
|
|
for fixturedef in faclist:
|
|
if fixturedef.params is not None:
|
|
metafunc.parametrize(argname, fixturedef.params, indirect=True,
|
|
scope=fixturedef.scope)
|
|
|
|
def pytest_collection_modifyitems(self, items):
|
|
# separate parametrized setups
|
|
items[:] = parametrize_sorted(items, set(), {}, 0)
|
|
|
|
def pytest_runtest_teardown(self, item, nextitem):
|
|
# XXX teardown needs to be normalized for parametrized and
|
|
# no-parametrized functions
|
|
try:
|
|
cs1 = item.callspec
|
|
except AttributeError:
|
|
return
|
|
|
|
# determine which fixtures are not needed anymore for the next test
|
|
keylist = []
|
|
for name in cs1.params:
|
|
try:
|
|
if name in nextitem.callspec.params and \
|
|
cs1.params[name] == nextitem.callspec.params[name]:
|
|
continue
|
|
except AttributeError:
|
|
pass
|
|
key = (-cs1._arg2scopenum[name], name, cs1.params[name])
|
|
keylist.append(key)
|
|
|
|
# sort by scope (function scope first, then higher ones)
|
|
keylist.sort()
|
|
for (scopenum, name, param) in keylist:
|
|
item.session._setupstate._callfinalizers((name, param))
|
|
l = self._arg2finish.pop(name, None)
|
|
if l is not None:
|
|
for fin in reversed(l):
|
|
fin()
|
|
|
|
def parsefactories(self, node_or_obj, nodeid=_dummy, unittest=False):
|
|
if nodeid is not _dummy:
|
|
holderobj = node_or_obj
|
|
else:
|
|
holderobj = node_or_obj.obj
|
|
nodeid = node_or_obj.nodeid
|
|
if holderobj in self._holderobjseen:
|
|
return
|
|
self._holderobjseen.add(holderobj)
|
|
autousenames = []
|
|
for name in dir(holderobj):
|
|
obj = getattr(holderobj, name, None)
|
|
if not callable(obj):
|
|
continue
|
|
# fixture functions have a pytest_funcarg__ prefix (pre-2.3 style)
|
|
# or are "@pytest.fixture" marked
|
|
marker = getfixturemarker(obj)
|
|
if marker is None:
|
|
if not name.startswith(self._argprefix):
|
|
continue
|
|
marker = defaultfuncargprefixmarker
|
|
name = name[len(self._argprefix):]
|
|
elif not isinstance(marker, FixtureFunctionMarker):
|
|
# magic globals with __getattr__ might have got us a wrong
|
|
# fixture attribute
|
|
continue
|
|
else:
|
|
assert not name.startswith(self._argprefix)
|
|
fixturedef = FixtureDef(self, nodeid, name, obj,
|
|
marker.scope, marker.params,
|
|
unittest=unittest)
|
|
faclist = self._arg2fixturedefs.setdefault(name, [])
|
|
if not fixturedef.has_location:
|
|
# All fixturedefs with no location are at the front
|
|
# so this inserts the current fixturedef after the
|
|
# existing fixturedefs from external plugins but
|
|
# before the fixturedefs provided in conftests.
|
|
i = len([f for f in faclist if not f.has_location])
|
|
else:
|
|
i = len(faclist) # append
|
|
faclist.insert(i, fixturedef)
|
|
if marker.autouse:
|
|
autousenames.append(name)
|
|
if autousenames:
|
|
self._nodeid_and_autousenames.append((nodeid or '', autousenames))
|
|
|
|
def getfixturedefs(self, argname, nodeid):
|
|
try:
|
|
fixturedefs = self._arg2fixturedefs[argname]
|
|
except KeyError:
|
|
return None
|
|
else:
|
|
return tuple(self._matchfactories(fixturedefs, nodeid))
|
|
|
|
def _matchfactories(self, fixturedefs, nodeid):
|
|
for fixturedef in fixturedefs:
|
|
if nodeid.startswith(fixturedef.baseid):
|
|
yield fixturedef
|
|
|
|
def addargfinalizer(self, finalizer, argname):
|
|
l = self._arg2finish.setdefault(argname, [])
|
|
l.append(finalizer)
|
|
|
|
def removefinalizer(self, finalizer):
|
|
for l in self._arg2finish.values():
|
|
try:
|
|
l.remove(finalizer)
|
|
except ValueError:
|
|
pass
|
|
|
|
def call_fixture_func(fixturefunc, request, kwargs):
|
|
if is_generator(fixturefunc):
|
|
iter = fixturefunc(**kwargs)
|
|
next = getattr(iter, "__next__", None)
|
|
if next is None:
|
|
next = getattr(iter, "next")
|
|
res = next()
|
|
def teardown():
|
|
try:
|
|
next()
|
|
except StopIteration:
|
|
pass
|
|
else:
|
|
fs, lineno = getfslineno(fixturefunc)
|
|
location = "%s:%s" % (fs, lineno+1)
|
|
pytest.fail(
|
|
"fixture function %s has more than one 'yield': \n%s" %
|
|
(fixturefunc.__name__, location), pytrace=False)
|
|
request.addfinalizer(teardown)
|
|
else:
|
|
res = fixturefunc(**kwargs)
|
|
return res
|
|
|
|
class FixtureDef:
|
|
""" A container for a factory definition. """
|
|
def __init__(self, fixturemanager, baseid, argname, func, scope, params,
|
|
unittest=False):
|
|
self._fixturemanager = fixturemanager
|
|
self.baseid = baseid or ''
|
|
self.has_location = baseid is not None
|
|
self.func = func
|
|
self.argname = argname
|
|
self.scope = scope
|
|
self.scopenum = scopes.index(scope or "function")
|
|
self.params = params
|
|
startindex = unittest and 1 or None
|
|
self.argnames = getfuncargnames(func, startindex=startindex)
|
|
self.unittest = unittest
|
|
self._finalizer = []
|
|
|
|
def addfinalizer(self, finalizer):
|
|
self._finalizer.append(finalizer)
|
|
|
|
def finish(self):
|
|
while self._finalizer:
|
|
func = self._finalizer.pop()
|
|
func()
|
|
# check neccesity of next commented call
|
|
self._fixturemanager.removefinalizer(self.finish)
|
|
#print "finished", self
|
|
try:
|
|
del self.cached_result
|
|
except AttributeError:
|
|
pass
|
|
|
|
def execute(self, request):
|
|
kwargs = {}
|
|
for newname in self.argnames:
|
|
kwargs[newname] = request.getfuncargvalue(newname)
|
|
if self.unittest:
|
|
result = self.func(request.instance, **kwargs)
|
|
else:
|
|
fixturefunc = self.func
|
|
# the fixture function needs to be bound to the actual
|
|
# request.instance so that code working with "self" behaves
|
|
# as expected. XXX request.instance should maybe return None
|
|
# instead of raising AttributeError
|
|
try:
|
|
if request.instance is not None:
|
|
fixturefunc = getimfunc(self.func)
|
|
if fixturefunc != self.func:
|
|
fixturefunc = fixturefunc.__get__(request.instance)
|
|
except AttributeError:
|
|
pass
|
|
result = call_fixture_func(fixturefunc, request, kwargs)
|
|
assert not hasattr(self, "cached_result")
|
|
self.cached_result = result
|
|
return result
|
|
|
|
def __repr__(self):
|
|
return ("<FixtureDef name=%r scope=%r baseid=%r module=%r>" %
|
|
(self.argname, self.scope, self.baseid, self.func.__module__))
|
|
|
|
def getfuncargnames(function, startindex=None):
|
|
# XXX merge with main.py's varnames
|
|
#assert not inspect.isclass(function)
|
|
realfunction = function
|
|
while hasattr(realfunction, "__wrapped__"):
|
|
realfunction = realfunction.__wrapped__
|
|
if startindex is None:
|
|
startindex = inspect.ismethod(function) and 1 or 0
|
|
if realfunction != function:
|
|
startindex += len(getattr(function, "patchings", []))
|
|
function = realfunction
|
|
argnames = inspect.getargs(py.code.getrawcode(function))[0]
|
|
defaults = getattr(function, 'func_defaults',
|
|
getattr(function, '__defaults__', None)) or ()
|
|
numdefaults = len(defaults)
|
|
if numdefaults:
|
|
return tuple(argnames[startindex:-numdefaults])
|
|
return tuple(argnames[startindex:])
|
|
|
|
# algorithm for sorting on a per-parametrized resource setup basis
|
|
|
|
def parametrize_sorted(items, ignore, cache, scopenum):
|
|
if scopenum >= 3:
|
|
return items
|
|
|
|
# we pick the first item which has a arg/param combo in the
|
|
# requested scope and sort other items with the same combo
|
|
# into "newitems" which then is a list of all items using this
|
|
# arg/param.
|
|
|
|
similar_items = []
|
|
other_items = []
|
|
slicing_argparam = None
|
|
slicing_index = 0
|
|
for item in items:
|
|
argparamlist = getfuncargparams(item, ignore, scopenum, cache)
|
|
if slicing_argparam is None and argparamlist:
|
|
slicing_argparam = argparamlist[0]
|
|
slicing_index = len(other_items)
|
|
if slicing_argparam in argparamlist:
|
|
similar_items.append(item)
|
|
else:
|
|
other_items.append(item)
|
|
|
|
if (len(similar_items) + slicing_index) > 1:
|
|
newignore = ignore.copy()
|
|
newignore.add(slicing_argparam)
|
|
part2 = parametrize_sorted(
|
|
similar_items + other_items[slicing_index:],
|
|
newignore, cache, scopenum)
|
|
part1 = parametrize_sorted(
|
|
other_items[:slicing_index], newignore,
|
|
cache, scopenum+1)
|
|
return part1 + part2
|
|
else:
|
|
other_items = parametrize_sorted(other_items, ignore, cache, scopenum+1)
|
|
return other_items + similar_items
|
|
|
|
def getfuncargparams(item, ignore, scopenum, cache):
|
|
""" return list of (arg,param) tuple, sorted by broader scope first. """
|
|
assert scopenum < 3 # function
|
|
try:
|
|
cs = item.callspec
|
|
except AttributeError:
|
|
return []
|
|
if scopenum == 0:
|
|
argparams = [x for x in cs.params.items() if x not in ignore
|
|
and cs._arg2scopenum[x[0]] == scopenum]
|
|
elif scopenum == 1: # module
|
|
argparams = []
|
|
for argname, param in cs.params.items():
|
|
if cs._arg2scopenum[argname] == scopenum:
|
|
key = (argname, param, item.fspath)
|
|
if key in ignore:
|
|
continue
|
|
argparams.append(key)
|
|
elif scopenum == 2: # class
|
|
argparams = []
|
|
for argname, param in cs.params.items():
|
|
if cs._arg2scopenum[argname] == scopenum:
|
|
l = cache.setdefault(item.fspath, [])
|
|
try:
|
|
i = l.index(item.cls)
|
|
except ValueError:
|
|
i = len(l)
|
|
l.append(item.cls)
|
|
key = (argname, param, item.fspath, i)
|
|
if key in ignore:
|
|
continue
|
|
argparams.append(key)
|
|
#elif scopenum == 3:
|
|
# argparams = []
|
|
# for argname, param in cs.params.items():
|
|
# if cs._arg2scopenum[argname] == scopenum:
|
|
# key = (argname, param, getfslineno(item.obj))
|
|
# if key in ignore:
|
|
# continue
|
|
# argparams.append(key)
|
|
return argparams
|
|
|
|
|
|
def xunitsetup(obj, name):
|
|
meth = getattr(obj, name, None)
|
|
if getfixturemarker(meth) is None:
|
|
return meth
|
|
|
|
def getfixturemarker(obj):
|
|
""" return fixturemarker or None if it doesn't exist or raised
|
|
exceptions."""
|
|
try:
|
|
return getattr(obj, "_pytestfixturefunction", None)
|
|
except KeyboardInterrupt:
|
|
raise
|
|
except Exception:
|
|
# some objects raise errors like request (from flask import request)
|
|
# we don't expect them to be fixture functions
|
|
return None
|
|
|