670 lines
22 KiB
Python
670 lines
22 KiB
Python
import os
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import warnings
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from functools import lru_cache
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from typing import Callable
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from typing import Dict
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from typing import Iterable
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from typing import Iterator
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from typing import List
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from typing import Optional
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from typing import Sequence
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from typing import Set
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from typing import Tuple
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from typing import TypeVar
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from typing import Union
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import py
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import _pytest._code
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from _pytest._code import getfslineno
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from _pytest._code.code import ExceptionInfo
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from _pytest._code.code import TerminalRepr
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from _pytest.compat import cached_property
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from _pytest.compat import overload
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from _pytest.compat import TYPE_CHECKING
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from _pytest.config import Config
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from _pytest.config import ConftestImportFailure
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from _pytest.config import PytestPluginManager
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from _pytest.deprecated import NODE_USE_FROM_PARENT
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from _pytest.fixtures import FixtureDef
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from _pytest.fixtures import FixtureLookupError
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from _pytest.mark.structures import Mark
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from _pytest.mark.structures import MarkDecorator
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from _pytest.mark.structures import NodeKeywords
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from _pytest.outcomes import fail
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from _pytest.pathlib import Path
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from _pytest.store import Store
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if TYPE_CHECKING:
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from typing import Type
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# Imported here due to circular import.
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from _pytest.main import Session
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from _pytest.warning_types import PytestWarning
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from _pytest._code.code import _TracebackStyle
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SEP = "/"
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tracebackcutdir = py.path.local(_pytest.__file__).dirpath()
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@lru_cache(maxsize=None)
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def _splitnode(nodeid: str) -> Tuple[str, ...]:
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"""Split a nodeid into constituent 'parts'.
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Node IDs are strings, and can be things like:
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''
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'testing/code'
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'testing/code/test_excinfo.py'
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'testing/code/test_excinfo.py::TestFormattedExcinfo'
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Return values are lists e.g.
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[]
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['testing', 'code']
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['testing', 'code', 'test_excinfo.py']
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['testing', 'code', 'test_excinfo.py', 'TestFormattedExcinfo']
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"""
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if nodeid == "":
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# If there is no root node at all, return an empty list so the caller's logic can remain sane
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return ()
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parts = nodeid.split(SEP)
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# Replace single last element 'test_foo.py::Bar' with multiple elements 'test_foo.py', 'Bar'
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parts[-1:] = parts[-1].split("::")
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# Convert parts into a tuple to avoid possible errors with caching of a mutable type
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return tuple(parts)
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def ischildnode(baseid: str, nodeid: str) -> bool:
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"""Return True if the nodeid is a child node of the baseid.
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E.g. 'foo/bar::Baz' is a child of 'foo', 'foo/bar' and 'foo/bar::Baz', but not of 'foo/blorp'
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"""
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base_parts = _splitnode(baseid)
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node_parts = _splitnode(nodeid)
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if len(node_parts) < len(base_parts):
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return False
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return node_parts[: len(base_parts)] == base_parts
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_NodeType = TypeVar("_NodeType", bound="Node")
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class NodeMeta(type):
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def __call__(self, *k, **kw):
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warnings.warn(NODE_USE_FROM_PARENT.format(name=self.__name__), stacklevel=2)
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return super().__call__(*k, **kw)
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def _create(self, *k, **kw):
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return super().__call__(*k, **kw)
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class Node(metaclass=NodeMeta):
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""" base class for Collector and Item the test collection tree.
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Collector subclasses have children, Items are terminal nodes."""
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# Use __slots__ to make attribute access faster.
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# Note that __dict__ is still available.
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__slots__ = (
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"name",
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"parent",
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"config",
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"session",
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"fspath",
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"_nodeid",
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"_store",
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"__dict__",
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)
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def __init__(
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self,
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name: str,
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parent: "Optional[Node]" = None,
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config: Optional[Config] = None,
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session: "Optional[Session]" = None,
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fspath: Optional[py.path.local] = None,
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nodeid: Optional[str] = None,
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) -> None:
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#: a unique name within the scope of the parent node
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self.name = name
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#: the parent collector node.
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self.parent = parent
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#: the pytest config object
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if config:
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self.config = config # type: Config
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else:
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if not parent:
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raise TypeError("config or parent must be provided")
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self.config = parent.config
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#: the session this node is part of
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if session:
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self.session = session
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else:
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if not parent:
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raise TypeError("session or parent must be provided")
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self.session = parent.session
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#: filesystem path where this node was collected from (can be None)
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self.fspath = fspath or getattr(parent, "fspath", None)
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#: keywords/markers collected from all scopes
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self.keywords = NodeKeywords(self)
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#: the marker objects belonging to this node
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self.own_markers = [] # type: List[Mark]
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#: allow adding of extra keywords to use for matching
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self.extra_keyword_matches = set() # type: Set[str]
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# used for storing artificial fixturedefs for direct parametrization
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self._name2pseudofixturedef = {} # type: Dict[str, FixtureDef]
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if nodeid is not None:
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assert "::()" not in nodeid
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self._nodeid = nodeid
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else:
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if not self.parent:
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raise TypeError("nodeid or parent must be provided")
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self._nodeid = self.parent.nodeid
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if self.name != "()":
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self._nodeid += "::" + self.name
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# A place where plugins can store information on the node for their
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# own use. Currently only intended for internal plugins.
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self._store = Store()
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@classmethod
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def from_parent(cls, parent: "Node", **kw):
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"""
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Public Constructor for Nodes
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This indirection got introduced in order to enable removing
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the fragile logic from the node constructors.
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Subclasses can use ``super().from_parent(...)`` when overriding the construction
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:param parent: the parent node of this test Node
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"""
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if "config" in kw:
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raise TypeError("config is not a valid argument for from_parent")
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if "session" in kw:
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raise TypeError("session is not a valid argument for from_parent")
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return cls._create(parent=parent, **kw)
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@property
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def ihook(self):
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""" fspath sensitive hook proxy used to call pytest hooks"""
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return self.session.gethookproxy(self.fspath)
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def __repr__(self) -> str:
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return "<{} {}>".format(self.__class__.__name__, getattr(self, "name", None))
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def warn(self, warning: "PytestWarning") -> None:
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"""Issue a warning for this item.
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Warnings will be displayed after the test session, unless explicitly suppressed
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:param Warning warning: the warning instance to issue. Must be a subclass of PytestWarning.
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:raise ValueError: if ``warning`` instance is not a subclass of PytestWarning.
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Example usage:
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.. code-block:: python
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node.warn(PytestWarning("some message"))
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"""
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from _pytest.warning_types import PytestWarning
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if not isinstance(warning, PytestWarning):
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raise ValueError(
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"warning must be an instance of PytestWarning or subclass, got {!r}".format(
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warning
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)
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)
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path, lineno = get_fslocation_from_item(self)
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assert lineno is not None
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warnings.warn_explicit(
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warning, category=None, filename=str(path), lineno=lineno + 1,
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)
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# methods for ordering nodes
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@property
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def nodeid(self) -> str:
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""" a ::-separated string denoting its collection tree address. """
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return self._nodeid
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def __hash__(self) -> int:
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return hash(self._nodeid)
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def setup(self) -> None:
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pass
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def teardown(self) -> None:
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pass
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def listchain(self) -> List["Node"]:
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""" return list of all parent collectors up to self,
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starting from root of collection tree. """
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chain = []
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item = self # type: Optional[Node]
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while item is not None:
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chain.append(item)
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item = item.parent
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chain.reverse()
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return chain
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def add_marker(
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self, marker: Union[str, MarkDecorator], append: bool = True
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) -> None:
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"""dynamically add a marker object to the node.
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:type marker: ``str`` or ``pytest.mark.*`` object
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:param marker:
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``append=True`` whether to append the marker,
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if ``False`` insert at position ``0``.
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"""
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from _pytest.mark import MARK_GEN
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if isinstance(marker, MarkDecorator):
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marker_ = marker
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elif isinstance(marker, str):
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marker_ = getattr(MARK_GEN, marker)
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else:
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raise ValueError("is not a string or pytest.mark.* Marker")
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self.keywords[marker_.name] = marker_
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if append:
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self.own_markers.append(marker_.mark)
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else:
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self.own_markers.insert(0, marker_.mark)
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def iter_markers(self, name: Optional[str] = None) -> Iterator[Mark]:
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"""
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:param name: if given, filter the results by the name attribute
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iterate over all markers of the node
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"""
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return (x[1] for x in self.iter_markers_with_node(name=name))
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def iter_markers_with_node(
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self, name: Optional[str] = None
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) -> Iterator[Tuple["Node", Mark]]:
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"""
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:param name: if given, filter the results by the name attribute
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iterate over all markers of the node
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returns sequence of tuples (node, mark)
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"""
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for node in reversed(self.listchain()):
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for mark in node.own_markers:
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if name is None or getattr(mark, "name", None) == name:
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yield node, mark
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@overload
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def get_closest_marker(self, name: str) -> Optional[Mark]:
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raise NotImplementedError()
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@overload # noqa: F811
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def get_closest_marker(self, name: str, default: Mark) -> Mark: # noqa: F811
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raise NotImplementedError()
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def get_closest_marker( # noqa: F811
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self, name: str, default: Optional[Mark] = None
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) -> Optional[Mark]:
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"""return the first marker matching the name, from closest (for example function) to farther level (for example
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module level).
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:param default: fallback return value of no marker was found
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:param name: name to filter by
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"""
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return next(self.iter_markers(name=name), default)
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def listextrakeywords(self) -> Set[str]:
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""" Return a set of all extra keywords in self and any parents."""
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extra_keywords = set() # type: Set[str]
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for item in self.listchain():
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extra_keywords.update(item.extra_keyword_matches)
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return extra_keywords
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def listnames(self) -> List[str]:
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return [x.name for x in self.listchain()]
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def addfinalizer(self, fin: Callable[[], object]) -> None:
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""" register a function to be called when this node is finalized.
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This method can only be called when this node is active
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in a setup chain, for example during self.setup().
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"""
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self.session._setupstate.addfinalizer(fin, self)
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def getparent(self, cls: "Type[_NodeType]") -> Optional[_NodeType]:
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""" get the next parent node (including ourself)
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which is an instance of the given class"""
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current = self # type: Optional[Node]
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while current and not isinstance(current, cls):
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current = current.parent
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assert current is None or isinstance(current, cls)
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return current
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def _prunetraceback(self, excinfo):
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pass
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def _repr_failure_py(
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self,
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excinfo: ExceptionInfo[BaseException],
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style: "Optional[_TracebackStyle]" = None,
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) -> TerminalRepr:
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if isinstance(excinfo.value, ConftestImportFailure):
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excinfo = ExceptionInfo(excinfo.value.excinfo)
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if isinstance(excinfo.value, fail.Exception):
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if not excinfo.value.pytrace:
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style = "value"
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if isinstance(excinfo.value, FixtureLookupError):
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return excinfo.value.formatrepr()
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if self.config.getoption("fulltrace", False):
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style = "long"
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else:
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tb = _pytest._code.Traceback([excinfo.traceback[-1]])
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self._prunetraceback(excinfo)
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if len(excinfo.traceback) == 0:
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excinfo.traceback = tb
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if style == "auto":
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style = "long"
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# XXX should excinfo.getrepr record all data and toterminal() process it?
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if style is None:
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if self.config.getoption("tbstyle", "auto") == "short":
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style = "short"
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else:
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style = "long"
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if self.config.getoption("verbose", 0) > 1:
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truncate_locals = False
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else:
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truncate_locals = True
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# excinfo.getrepr() formats paths relative to the CWD if `abspath` is False.
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# It is possible for a fixture/test to change the CWD while this code runs, which
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# would then result in the user seeing confusing paths in the failure message.
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# To fix this, if the CWD changed, always display the full absolute path.
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# It will be better to just always display paths relative to invocation_dir, but
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# this requires a lot of plumbing (#6428).
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try:
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abspath = Path(os.getcwd()) != Path(str(self.config.invocation_dir))
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except OSError:
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abspath = True
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return excinfo.getrepr(
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funcargs=True,
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abspath=abspath,
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showlocals=self.config.getoption("showlocals", False),
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style=style,
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tbfilter=False, # pruned already, or in --fulltrace mode.
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truncate_locals=truncate_locals,
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)
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def repr_failure(
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self,
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excinfo: ExceptionInfo[BaseException],
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style: "Optional[_TracebackStyle]" = None,
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) -> Union[str, TerminalRepr]:
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"""
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Return a representation of a collection or test failure.
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:param excinfo: Exception information for the failure.
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"""
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return self._repr_failure_py(excinfo, style)
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def get_fslocation_from_item(
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node: "Node",
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) -> Tuple[Union[str, py.path.local], Optional[int]]:
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"""Tries to extract the actual location from a node, depending on available attributes:
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* "location": a pair (path, lineno)
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* "obj": a Python object that the node wraps.
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* "fspath": just a path
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:rtype: a tuple of (str|LocalPath, int) with filename and line number.
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"""
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# See Item.location.
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location = getattr(
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node, "location", None
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) # type: Optional[Tuple[str, Optional[int], str]]
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if location is not None:
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return location[:2]
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obj = getattr(node, "obj", None)
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if obj is not None:
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return getfslineno(obj)
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return getattr(node, "fspath", "unknown location"), -1
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class Collector(Node):
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""" Collector instances create children through collect()
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and thus iteratively build a tree.
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"""
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class CollectError(Exception):
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""" an error during collection, contains a custom message. """
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def collect(self) -> Iterable[Union["Item", "Collector"]]:
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""" returns a list of children (items and collectors)
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for this collection node.
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"""
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raise NotImplementedError("abstract")
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# TODO: This omits the style= parameter which breaks Liskov Substitution.
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def repr_failure( # type: ignore[override]
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self, excinfo: ExceptionInfo[BaseException]
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) -> Union[str, TerminalRepr]:
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"""
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Return a representation of a collection failure.
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:param excinfo: Exception information for the failure.
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"""
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if isinstance(excinfo.value, self.CollectError) and not self.config.getoption(
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"fulltrace", False
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):
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exc = excinfo.value
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return str(exc.args[0])
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# Respect explicit tbstyle option, but default to "short"
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# (_repr_failure_py uses "long" with "fulltrace" option always).
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tbstyle = self.config.getoption("tbstyle", "auto")
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if tbstyle == "auto":
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tbstyle = "short"
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return self._repr_failure_py(excinfo, style=tbstyle)
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def _prunetraceback(self, excinfo):
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if hasattr(self, "fspath"):
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traceback = excinfo.traceback
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ntraceback = traceback.cut(path=self.fspath)
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if ntraceback == traceback:
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ntraceback = ntraceback.cut(excludepath=tracebackcutdir)
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excinfo.traceback = ntraceback.filter()
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def _check_initialpaths_for_relpath(session, fspath):
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for initial_path in session._initialpaths:
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if fspath.common(initial_path) == initial_path:
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return fspath.relto(initial_path)
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class FSHookProxy:
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def __init__(self, pm: PytestPluginManager, remove_mods) -> None:
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self.pm = pm
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self.remove_mods = remove_mods
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def __getattr__(self, name: str):
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x = self.pm.subset_hook_caller(name, remove_plugins=self.remove_mods)
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self.__dict__[name] = x
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return x
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class FSCollector(Collector):
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def __init__(
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self,
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fspath: py.path.local,
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parent=None,
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config: Optional[Config] = None,
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session: Optional["Session"] = None,
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nodeid: Optional[str] = None,
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) -> None:
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name = fspath.basename
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if parent is not None:
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rel = fspath.relto(parent.fspath)
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if rel:
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name = rel
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name = name.replace(os.sep, SEP)
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self.fspath = fspath
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session = session or parent.session
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if nodeid is None:
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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().__init__(name, parent, config, session, nodeid=nodeid, fspath=fspath)
|
|
|
|
self._norecursepatterns = self.config.getini("norecursedirs")
|
|
|
|
@classmethod
|
|
def from_parent(cls, parent, *, fspath, **kw):
|
|
"""
|
|
The public constructor
|
|
"""
|
|
return super().from_parent(parent=parent, fspath=fspath, **kw)
|
|
|
|
def _gethookproxy(self, fspath: py.path.local):
|
|
# check if we have the common case of running
|
|
# hooks with all conftest.py files
|
|
pm = self.config.pluginmanager
|
|
my_conftestmodules = pm._getconftestmodules(
|
|
fspath, self.config.getoption("importmode")
|
|
)
|
|
remove_mods = pm._conftest_plugins.difference(my_conftestmodules)
|
|
if remove_mods:
|
|
# one or more conftests are not in use at this fspath
|
|
proxy = FSHookProxy(pm, remove_mods)
|
|
else:
|
|
# all plugins are active for this fspath
|
|
proxy = self.config.hook
|
|
return proxy
|
|
|
|
def gethookproxy(self, fspath: py.path.local):
|
|
raise NotImplementedError()
|
|
|
|
def _recurse(self, dirpath: py.path.local) -> bool:
|
|
if dirpath.basename == "__pycache__":
|
|
return False
|
|
ihook = self._gethookproxy(dirpath.dirpath())
|
|
if ihook.pytest_ignore_collect(path=dirpath, config=self.config):
|
|
return False
|
|
for pat in self._norecursepatterns:
|
|
if dirpath.check(fnmatch=pat):
|
|
return False
|
|
ihook = self._gethookproxy(dirpath)
|
|
ihook.pytest_collect_directory(path=dirpath, parent=self)
|
|
return True
|
|
|
|
def isinitpath(self, path: py.path.local) -> bool:
|
|
raise NotImplementedError()
|
|
|
|
def _collectfile(
|
|
self, path: py.path.local, handle_dupes: bool = True
|
|
) -> Sequence[Collector]:
|
|
assert (
|
|
path.isfile()
|
|
), "{!r} is not a file (isdir={!r}, exists={!r}, islink={!r})".format(
|
|
path, path.isdir(), path.exists(), path.islink()
|
|
)
|
|
ihook = self.gethookproxy(path)
|
|
if not self.isinitpath(path):
|
|
if ihook.pytest_ignore_collect(path=path, config=self.config):
|
|
return ()
|
|
|
|
if handle_dupes:
|
|
keepduplicates = self.config.getoption("keepduplicates")
|
|
if not keepduplicates:
|
|
duplicate_paths = self.config.pluginmanager._duplicatepaths
|
|
if path in duplicate_paths:
|
|
return ()
|
|
else:
|
|
duplicate_paths.add(path)
|
|
|
|
return ihook.pytest_collect_file(path=path, parent=self) # type: ignore[no-any-return]
|
|
|
|
|
|
class File(FSCollector):
|
|
"""Base class for collecting tests from a file.
|
|
|
|
:ref:`non-python tests`.
|
|
"""
|
|
|
|
|
|
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: Optional[Config] = None,
|
|
session: Optional["Session"] = None,
|
|
nodeid: Optional[str] = None,
|
|
) -> None:
|
|
super().__init__(name, parent, config, session, nodeid=nodeid)
|
|
self._report_sections = [] # type: List[Tuple[str, str, str]]
|
|
|
|
#: user properties is a list of tuples (name, value) that holds user
|
|
#: defined properties for this test.
|
|
self.user_properties = [] # type: List[Tuple[str, object]]
|
|
|
|
def runtest(self) -> None:
|
|
raise NotImplementedError("runtest must be implemented by Item subclass")
|
|
|
|
def add_report_section(self, when: str, key: str, content: str) -> None:
|
|
"""
|
|
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) -> Tuple[Union[py.path.local, str], Optional[int], str]:
|
|
return self.fspath, None, ""
|
|
|
|
@cached_property
|
|
def location(self) -> Tuple[str, Optional[int], str]:
|
|
location = self.reportinfo()
|
|
if isinstance(location[0], py.path.local):
|
|
fspath = location[0]
|
|
else:
|
|
fspath = py.path.local(location[0])
|
|
relfspath = self.session._node_location_to_relpath(fspath)
|
|
assert type(location[2]) is str
|
|
return (relfspath, location[1], location[2])
|