from __future__ import absolute_import, division, print_function
import os
import six
import py
import attr
import _pytest
import _pytest._code
from _pytest.mark.structures import NodeKeywords, MarkInfo
SEP = "/"
tracebackcutdir = py.path.local(_pytest.__file__).dirpath()
def _splitnode(nodeid):
"""Split a nodeid into constituent 'parts'.
Node IDs are strings, and can be things like:
''
'testing/code'
'testing/code/test_excinfo.py'
'testing/code/test_excinfo.py::TestFormattedExcinfo::()'
Return values are lists e.g.
[]
['testing', 'code']
['testing', 'code', 'test_excinfo.py']
['testing', 'code', 'test_excinfo.py', 'TestFormattedExcinfo', '()']
"""
if nodeid == "":
# If there is no root node at all, return an empty list so the caller's logic can remain sane
return []
parts = nodeid.split(SEP)
# Replace single last element 'test_foo.py::Bar::()' with multiple elements 'test_foo.py', 'Bar', '()'
parts[-1:] = parts[-1].split("::")
return parts
def ischildnode(baseid, nodeid):
"""Return True if the nodeid is a child node of the baseid.
E.g. 'foo/bar::Baz::()' is a child of 'foo', 'foo/bar' and 'foo/bar::Baz', but not of 'foo/blorp'
"""
base_parts = _splitnode(baseid)
node_parts = _splitnode(nodeid)
if len(node_parts) < len(base_parts):
return False
return node_parts[: len(base_parts)] == base_parts
@attr.s
class _CompatProperty(object):
name = attr.ib()
def __get__(self, obj, owner):
if obj is None:
return self
# TODO: reenable in the features branch
# warnings.warn(
# "usage of {owner!r}.{name} is deprecated, please use pytest.{name} instead".format(
# name=self.name, owner=type(owner).__name__),
# PendingDeprecationWarning, stacklevel=2)
return getattr(__import__("pytest"), self.name)
[docs]class Node(object):
""" base class for Collector and Item the test collection tree.
Collector subclasses have children, Items are terminal nodes."""
def __init__(
self, name, parent=None, config=None, session=None, fspath=None, nodeid=None
):
#: a unique name within the scope of the parent node
self.name = name
#: the parent collector node.
self.parent = parent
#: the pytest config object
self.config = config or parent.config
#: the session this node is part of
self.session = session or parent.session
#: filesystem path where this node was collected from (can be None)
self.fspath = fspath or getattr(parent, "fspath", None)
#: keywords/markers collected from all scopes
self.keywords = NodeKeywords(self)
#: the marker objects belonging to this node
self.own_markers = []
#: allow adding of extra keywords to use for matching
self.extra_keyword_matches = set()
# used for storing artificial fixturedefs for direct parametrization
self._name2pseudofixturedef = {}
if nodeid is not None:
self._nodeid = nodeid
else:
assert parent is not None
self._nodeid = self.parent.nodeid + "::" + self.name
@property
def ihook(self):
""" fspath sensitive hook proxy used to call pytest hooks"""
return self.session.gethookproxy(self.fspath)
Module = _CompatProperty("Module")
Class = _CompatProperty("Class")
Instance = _CompatProperty("Instance")
Function = _CompatProperty("Function")
File = _CompatProperty("File")
Item = _CompatProperty("Item")
def _getcustomclass(self, name):
maybe_compatprop = getattr(type(self), name)
if isinstance(maybe_compatprop, _CompatProperty):
return getattr(__import__("pytest"), name)
else:
cls = getattr(self, name)
# TODO: reenable in the features branch
# warnings.warn("use of node.%s is deprecated, "
# "use pytest_pycollect_makeitem(...) to create custom "
# "collection nodes" % name, category=DeprecationWarning)
return cls
def __repr__(self):
return "<%s %r>" % (self.__class__.__name__, getattr(self, "name", None))
[docs] def warn(self, code, message):
""" generate a warning with the given code and message for this
item. """
assert isinstance(code, str)
fslocation = getattr(self, "location", None)
if fslocation is None:
fslocation = getattr(self, "fspath", None)
self.ihook.pytest_logwarning.call_historic(
kwargs=dict(
code=code, message=message, nodeid=self.nodeid, fslocation=fslocation
)
)
# methods for ordering nodes
@property
def nodeid(self):
""" a ::-separated string denoting its collection tree address. """
return self._nodeid
def __hash__(self):
return hash(self.nodeid)
def setup(self):
pass
def teardown(self):
pass
[docs] def listchain(self):
""" return list of all parent collectors up to self,
starting from root of collection tree. """
chain = []
item = self
while item is not None:
chain.append(item)
item = item.parent
chain.reverse()
return chain
[docs] def add_marker(self, marker, append=True):
"""dynamically add a marker object to the node.
:type marker: ``str`` or ``pytest.mark.*`` object
:param marker:
``append=True`` whether to append the marker,
if ``False`` insert at position ``0``.
"""
from _pytest.mark import MarkDecorator, MARK_GEN
if isinstance(marker, six.string_types):
marker = getattr(MARK_GEN, marker)
elif not isinstance(marker, MarkDecorator):
raise ValueError("is not a string or pytest.mark.* Marker")
self.keywords[marker.name] = marker
if append:
self.own_markers.append(marker.mark)
else:
self.own_markers.insert(0, marker.mark)
[docs] def iter_markers(self, name=None):
"""
:param name: if given, filter the results by the name attribute
iterate over all markers of the node
"""
return (x[1] for x in self.iter_markers_with_node(name=name))
[docs] def iter_markers_with_node(self, name=None):
"""
:param name: if given, filter the results by the name attribute
iterate over all markers of the node
returns sequence of tuples (node, mark)
"""
for node in reversed(self.listchain()):
for mark in node.own_markers:
if name is None or getattr(mark, "name", None) == name:
yield node, mark
[docs] def get_closest_marker(self, name, default=None):
"""return the first marker matching the name, from closest (for example function) to farther level (for example
module level).
:param default: fallback return value of no marker was found
:param name: name to filter by
"""
return next(self.iter_markers(name=name), default)
[docs] def get_marker(self, name):
""" get a marker object from this node or None if
the node doesn't have a marker with that name.
.. deprecated:: 3.6
This function has been deprecated in favor of
:meth:`Node.get_closest_marker <_pytest.nodes.Node.get_closest_marker>` and
:meth:`Node.iter_markers <_pytest.nodes.Node.iter_markers>`, see :ref:`update marker code`
for more details.
"""
markers = list(self.iter_markers(name=name))
if markers:
return MarkInfo(markers)
def listnames(self):
return [x.name for x in self.listchain()]
[docs] def addfinalizer(self, fin):
""" register a function to be called when this node is finalized.
This method can only be called when this node is active
in a setup chain, for example during self.setup().
"""
self.session._setupstate.addfinalizer(fin, self)
[docs] def getparent(self, cls):
""" get the next parent node (including ourself)
which is an instance of the given class"""
current = self
while current and not isinstance(current, cls):
current = current.parent
return current
def _prunetraceback(self, excinfo):
pass
def _repr_failure_py(self, excinfo, style=None):
fm = self.session._fixturemanager
if excinfo.errisinstance(fm.FixtureLookupError):
return excinfo.value.formatrepr()
tbfilter = True
if self.config.option.fulltrace:
style = "long"
else:
tb = _pytest._code.Traceback([excinfo.traceback[-1]])
self._prunetraceback(excinfo)
if len(excinfo.traceback) == 0:
excinfo.traceback = tb
tbfilter = False # prunetraceback already does it
if style == "auto":
style = "long"
# XXX should excinfo.getrepr record all data and toterminal() process it?
if style is None:
if self.config.option.tbstyle == "short":
style = "short"
else:
style = "long"
if self.config.option.verbose > 1:
truncate_locals = False
else:
truncate_locals = True
try:
os.getcwd()
abspath = False
except OSError:
abspath = True
return excinfo.getrepr(
funcargs=True,
abspath=abspath,
showlocals=self.config.option.showlocals,
style=style,
tbfilter=tbfilter,
truncate_locals=truncate_locals,
)
repr_failure = _repr_failure_py
[docs]class Collector(Node):
""" Collector instances create children through collect()
and thus iteratively build a tree.
"""
[docs] class CollectError(Exception):
""" an error during collection, contains a custom message. """
[docs] def collect(self):
""" returns a list of children (items and collectors)
for this collection node.
"""
raise NotImplementedError("abstract")
[docs] def repr_failure(self, excinfo):
""" represent a collection failure. """
if excinfo.errisinstance(self.CollectError):
exc = excinfo.value
return str(exc.args[0])
return self._repr_failure_py(excinfo, style="short")
def _prunetraceback(self, excinfo):
if hasattr(self, "fspath"):
traceback = excinfo.traceback
ntraceback = traceback.cut(path=self.fspath)
if ntraceback == traceback:
ntraceback = ntraceback.cut(excludepath=tracebackcutdir)
excinfo.traceback = ntraceback.filter()
def _check_initialpaths_for_relpath(session, fspath):
for initial_path in session._initialpaths:
if fspath.common(initial_path) == initial_path:
return fspath.relto(initial_path.dirname)
[docs]class FSCollector(Collector):
def __init__(self, fspath, parent=None, config=None, session=None, nodeid=None):
fspath = py.path.local(fspath) # xxx only for test_resultlog.py?
name = fspath.basename
if parent is not None:
rel = fspath.relto(parent.fspath)
if rel:
name = rel
name = name.replace(os.sep, SEP)
self.fspath = fspath
session = session or parent.session
if nodeid is None:
nodeid = self.fspath.relto(session.config.rootdir)
if not nodeid:
nodeid = _check_initialpaths_for_relpath(session, fspath)
if nodeid and os.sep != SEP:
nodeid = nodeid.replace(os.sep, SEP)
super(FSCollector, self).__init__(
name, parent, config, session, nodeid=nodeid, fspath=fspath
)
class File(FSCollector):
""" base class for collecting tests from a file. """
[docs]class Item(Node):
""" a basic test invocation item. Note that for a single function
there might be multiple test invocation items.
"""
nextitem = None
def __init__(self, name, parent=None, config=None, session=None, nodeid=None):
super(Item, self).__init__(name, parent, config, session, nodeid=nodeid)
self._report_sections = []
#: user properties is a list of tuples (name, value) that holds user
#: defined properties for this test.
self.user_properties = []
[docs] def add_report_section(self, when, key, content):
"""
Adds a new report section, similar to what's done internally to add stdout and
stderr captured output::
item.add_report_section("call", "stdout", "report section contents")
:param str when:
One of the possible capture states, ``"setup"``, ``"call"``, ``"teardown"``.
:param str key:
Name of the section, can be customized at will. Pytest uses ``"stdout"`` and
``"stderr"`` internally.
:param str content:
The full contents as a string.
"""
if content:
self._report_sections.append((when, key, content))
def reportinfo(self):
return self.fspath, None, ""
@property
def location(self):
try:
return self._location
except AttributeError:
location = self.reportinfo()
# bestrelpath is a quite slow function
cache = self.config.__dict__.setdefault("_bestrelpathcache", {})
try:
fspath = cache[location[0]]
except KeyError:
fspath = self.session.fspath.bestrelpath(location[0])
cache[location[0]] = fspath
location = (fspath, location[1], str(location[2]))
self._location = location
return location