592 lines
19 KiB
Python
592 lines
19 KiB
Python
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import os
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import warnings
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from pathlib import Path
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from typing import Callable
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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 overload
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from typing import Set
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from typing import Tuple
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from typing import Type
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from typing import TYPE_CHECKING
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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.config import Config
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from _pytest.config import ConftestImportFailure
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from _pytest.deprecated import FSCOLLECTOR_GETHOOKPROXY_ISINITPATH
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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 absolutepath
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from _pytest.store import Store
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if TYPE_CHECKING:
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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._code.code import _TracebackStyle
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SEP = "/"
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tracebackcutdir = py.path.local(_pytest.__file__).dirpath()
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def iterparentnodeids(nodeid: str) -> Iterator[str]:
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"""Return the parent node IDs of a given node ID, inclusive.
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For the node ID
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"testing/code/test_excinfo.py::TestFormattedExcinfo::test_repr_source"
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the result would be
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""
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"testing"
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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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"testing/code/test_excinfo.py::TestFormattedExcinfo::test_repr_source"
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Note that :: parts are only considered at the last / component.
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"""
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pos = 0
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sep = SEP
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yield ""
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while True:
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at = nodeid.find(sep, pos)
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if at == -1 and sep == SEP:
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sep = "::"
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elif at == -1:
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if nodeid:
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yield nodeid
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break
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else:
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if at:
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yield nodeid[:at]
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pos = at + len(sep)
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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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msg = (
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"Direct construction of {name} has been deprecated, please use {name}.from_parent.\n"
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"See "
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"https://docs.pytest.org/en/stable/deprecations.html#node-construction-changed-to-node-from-parent"
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" for more details."
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).format(name=self.__name__)
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fail(msg, pytrace=False)
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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 components of the test
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collection tree.
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Collector subclasses have children; Items are leaf nodes.
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"""
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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 = 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 pytest 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: List[Mark] = []
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#: Allow adding of extra keywords to use for matching.
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self.extra_keyword_matches: Set[str] = set()
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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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"""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
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construction.
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:param parent: The parent node of this 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: Warning) -> None:
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"""Issue a warning for this Node.
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Warnings will be displayed after the test session, unless explicitly suppressed.
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:param Warning warning:
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The warning instance to issue.
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:raises ValueError: If ``warning`` instance is not a subclass of Warning.
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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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node.warn(UserWarning("some message"))
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.. versionchanged:: 6.2
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Any subclass of :class:`Warning` is now accepted, rather than only
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:class:`PytestWarning <pytest.PytestWarning>` subclasses.
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"""
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# enforce type checks here to avoid getting a generic type error later otherwise.
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if not isinstance(warning, Warning):
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raise ValueError(
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"warning must be an instance of Warning 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, starting from
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the root of collection tree."""
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chain = []
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item: Optional[Node] = self
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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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:param append:
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Whether to append the marker, or prepend it.
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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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"""Iterate over all markers of the node.
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:param name: If given, filter the results by the name attribute.
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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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"""Iterate over all markers of the node.
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:param name: If given, filter the results by the name attribute.
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:returns: An iterator of (node, mark) tuples.
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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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...
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@overload
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def get_closest_marker(self, name: str, default: Mark) -> Mark:
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...
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def get_closest_marker(
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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
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example function) to farther level (for example module level).
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:param default: Fallback return value if 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[str] = set()
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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 self) which is an instance of
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the given class."""
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current: Optional[Node] = self
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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: ExceptionInfo[BaseException]) -> None:
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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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from _pytest.fixtures import FixtureLookupError
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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.
|
||
|
|
# It will be better to just always display paths relative to invocation_dir, but
|
||
|
|
# this requires a lot of plumbing (#6428).
|
||
|
|
try:
|
||
|
|
abspath = Path(os.getcwd()) != self.config.invocation_params.dir
|
||
|
|
except OSError:
|
||
|
|
abspath = True
|
||
|
|
|
||
|
|
return excinfo.getrepr(
|
||
|
|
funcargs=True,
|
||
|
|
abspath=abspath,
|
||
|
|
showlocals=self.config.getoption("showlocals", False),
|
||
|
|
style=style,
|
||
|
|
tbfilter=False, # pruned already, or in --fulltrace mode.
|
||
|
|
truncate_locals=truncate_locals,
|
||
|
|
)
|
||
|
|
|
||
|
|
def repr_failure(
|
||
|
|
self,
|
||
|
|
excinfo: ExceptionInfo[BaseException],
|
||
|
|
style: "Optional[_TracebackStyle]" = None,
|
||
|
|
) -> Union[str, TerminalRepr]:
|
||
|
|
"""Return a representation of a collection or test failure.
|
||
|
|
|
||
|
|
:param excinfo: Exception information for the failure.
|
||
|
|
"""
|
||
|
|
return self._repr_failure_py(excinfo, style)
|
||
|
|
|
||
|
|
|
||
|
|
def get_fslocation_from_item(
|
||
|
|
node: "Node",
|
||
|
|
) -> Tuple[Union[str, py.path.local], Optional[int]]:
|
||
|
|
"""Try to extract the actual location from a node, depending on available attributes:
|
||
|
|
|
||
|
|
* "location": a pair (path, lineno)
|
||
|
|
* "obj": a Python object that the node wraps.
|
||
|
|
* "fspath": just a path
|
||
|
|
|
||
|
|
:rtype: A tuple of (str|py.path.local, int) with filename and line number.
|
||
|
|
"""
|
||
|
|
# See Item.location.
|
||
|
|
location: Optional[Tuple[str, Optional[int], str]] = getattr(node, "location", None)
|
||
|
|
if location is not None:
|
||
|
|
return location[:2]
|
||
|
|
obj = getattr(node, "obj", None)
|
||
|
|
if obj is not None:
|
||
|
|
return getfslineno(obj)
|
||
|
|
return getattr(node, "fspath", "unknown location"), -1
|
||
|
|
|
||
|
|
|
||
|
|
class Collector(Node):
|
||
|
|
"""Collector instances create children through collect() and thus
|
||
|
|
iteratively build a tree."""
|
||
|
|
|
||
|
|
class CollectError(Exception):
|
||
|
|
"""An error during collection, contains a custom message."""
|
||
|
|
|
||
|
|
def collect(self) -> Iterable[Union["Item", "Collector"]]:
|
||
|
|
"""Return a list of children (items and collectors) for this
|
||
|
|
collection node."""
|
||
|
|
raise NotImplementedError("abstract")
|
||
|
|
|
||
|
|
# TODO: This omits the style= parameter which breaks Liskov Substitution.
|
||
|
|
def repr_failure( # type: ignore[override]
|
||
|
|
self, excinfo: ExceptionInfo[BaseException]
|
||
|
|
) -> Union[str, TerminalRepr]:
|
||
|
|
"""Return a representation of a collection failure.
|
||
|
|
|
||
|
|
:param excinfo: Exception information for the failure.
|
||
|
|
"""
|
||
|
|
if isinstance(excinfo.value, self.CollectError) and not self.config.getoption(
|
||
|
|
"fulltrace", False
|
||
|
|
):
|
||
|
|
exc = excinfo.value
|
||
|
|
return str(exc.args[0])
|
||
|
|
|
||
|
|
# Respect explicit tbstyle option, but default to "short"
|
||
|
|
# (_repr_failure_py uses "long" with "fulltrace" option always).
|
||
|
|
tbstyle = self.config.getoption("tbstyle", "auto")
|
||
|
|
if tbstyle == "auto":
|
||
|
|
tbstyle = "short"
|
||
|
|
|
||
|
|
return self._repr_failure_py(excinfo, style=tbstyle)
|
||
|
|
|
||
|
|
def _prunetraceback(self, excinfo: ExceptionInfo[BaseException]) -> None:
|
||
|
|
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)
|
||
|
|
|
||
|
|
|
||
|
|
class FSCollector(Collector):
|
||
|
|
def __init__(
|
||
|
|
self,
|
||
|
|
fspath: py.path.local,
|
||
|
|
parent=None,
|
||
|
|
config: Optional[Config] = None,
|
||
|
|
session: Optional["Session"] = None,
|
||
|
|
nodeid: Optional[str] = None,
|
||
|
|
) -> None:
|
||
|
|
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().__init__(name, parent, config, session, nodeid=nodeid, fspath=fspath)
|
||
|
|
|
||
|
|
@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):
|
||
|
|
warnings.warn(FSCOLLECTOR_GETHOOKPROXY_ISINITPATH, stacklevel=2)
|
||
|
|
return self.session.gethookproxy(fspath)
|
||
|
|
|
||
|
|
def isinitpath(self, path: py.path.local) -> bool:
|
||
|
|
warnings.warn(FSCOLLECTOR_GETHOOKPROXY_ISINITPATH, stacklevel=2)
|
||
|
|
return self.session.isinitpath(path)
|
||
|
|
|
||
|
|
|
||
|
|
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: List[Tuple[str, str, str]] = []
|
||
|
|
|
||
|
|
#: A list of tuples (name, value) that holds user defined properties
|
||
|
|
#: for this test.
|
||
|
|
self.user_properties: 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:
|
||
|
|
"""Add 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()
|
||
|
|
fspath = absolutepath(str(location[0]))
|
||
|
|
relfspath = self.session._node_location_to_relpath(fspath)
|
||
|
|
assert type(location[2]) is str
|
||
|
|
return (relfspath, location[1], location[2])
|