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.venv2/Lib/site-packages/_pytest/mark/__init__.py

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+"""Generic mechanism for marking and selecting python functions."""
+import dataclasses
+from typing import AbstractSet
+from typing import Collection
+from typing import List
+from typing import Optional
+from typing import TYPE_CHECKING
+from typing import Union
+
+from .expression import Expression
+from .expression import ParseError
+from .structures import EMPTY_PARAMETERSET_OPTION
+from .structures import get_empty_parameterset_mark
+from .structures import Mark
+from .structures import MARK_GEN
+from .structures import MarkDecorator
+from .structures import MarkGenerator
+from .structures import ParameterSet
+from _pytest.config import Config
+from _pytest.config import ExitCode
+from _pytest.config import hookimpl
+from _pytest.config import UsageError
+from _pytest.config.argparsing import Parser
+from _pytest.stash import StashKey
+
+if TYPE_CHECKING:
+    from _pytest.nodes import Item
+
+
+__all__ = [
+    "MARK_GEN",
+    "Mark",
+    "MarkDecorator",
+    "MarkGenerator",
+    "ParameterSet",
+    "get_empty_parameterset_mark",
+]
+
+
+old_mark_config_key = StashKey[Optional[Config]]()
+
+
+def param(
+    *values: object,
+    marks: Union[MarkDecorator, Collection[Union[MarkDecorator, Mark]]] = (),
+    id: Optional[str] = None,
+) -> ParameterSet:
+    """Specify a parameter in `pytest.mark.parametrize`_ calls or
+    :ref:`parametrized fixtures <fixture-parametrize-marks>`.
+
+    .. code-block:: python
+
+        @pytest.mark.parametrize(
+            "test_input,expected",
+            [
+                ("3+5", 8),
+                pytest.param("6*9", 42, marks=pytest.mark.xfail),
+            ],
+        )
+        def test_eval(test_input, expected):
+            assert eval(test_input) == expected
+
+    :param values: Variable args of the values of the parameter set, in order.
+    :param marks: A single mark or a list of marks to be applied to this parameter set.
+    :param id: The id to attribute to this parameter set.
+    """
+    return ParameterSet.param(*values, marks=marks, id=id)
+
+
+def pytest_addoption(parser: Parser) -> None:
+    group = parser.getgroup("general")
+    group._addoption(
+        "-k",
+        action="store",
+        dest="keyword",
+        default="",
+        metavar="EXPRESSION",
+        help="Only run tests which match the given substring expression. "
+        "An expression is a Python evaluatable expression "
+        "where all names are substring-matched against test names "
+        "and their parent classes. Example: -k 'test_method or test_"
+        "other' matches all test functions and classes whose name "
+        "contains 'test_method' or 'test_other', while -k 'not test_method' "
+        "matches those that don't contain 'test_method' in their names. "
+        "-k 'not test_method and not test_other' will eliminate the matches. "
+        "Additionally keywords are matched to classes and functions "
+        "containing extra names in their 'extra_keyword_matches' set, "
+        "as well as functions which have names assigned directly to them. "
+        "The matching is case-insensitive.",
+    )
+
+    group._addoption(
+        "-m",
+        action="store",
+        dest="markexpr",
+        default="",
+        metavar="MARKEXPR",
+        help="Only run tests matching given mark expression. "
+        "For example: -m 'mark1 and not mark2'.",
+    )
+
+    group.addoption(
+        "--markers",
+        action="store_true",
+        help="show markers (builtin, plugin and per-project ones).",
+    )
+
+    parser.addini("markers", "Markers for test functions", "linelist")
+    parser.addini(EMPTY_PARAMETERSET_OPTION, "Default marker for empty parametersets")
+
+
+@hookimpl(tryfirst=True)
+def pytest_cmdline_main(config: Config) -> Optional[Union[int, ExitCode]]:
+    import _pytest.config
+
+    if config.option.markers:
+        config._do_configure()
+        tw = _pytest.config.create_terminal_writer(config)
+        for line in config.getini("markers"):
+            parts = line.split(":", 1)
+            name = parts[0]
+            rest = parts[1] if len(parts) == 2 else ""
+            tw.write("@pytest.mark.%s:" % name, bold=True)
+            tw.line(rest)
+            tw.line()
+        config._ensure_unconfigure()
+        return 0
+
+    return None
+
+
+@dataclasses.dataclass
+class KeywordMatcher:
+    """A matcher for keywords.
+
+    Given a list of names, matches any substring of one of these names. The
+    string inclusion check is case-insensitive.
+
+    Will match on the name of colitem, including the names of its parents.
+    Only matches names of items which are either a :class:`Class` or a
+    :class:`Function`.
+
+    Additionally, matches on names in the 'extra_keyword_matches' set of
+    any item, as well as names directly assigned to test functions.
+    """
+
+    __slots__ = ("_names",)
+
+    _names: AbstractSet[str]
+
+    @classmethod
+    def from_item(cls, item: "Item") -> "KeywordMatcher":
+        mapped_names = set()
+
+        # Add the names of the current item and any parent items,
+        # except the Session and root Directory's which are not
+        # interesting for matching.
+        import pytest
+
+        for node in item.listchain():
+            if isinstance(node, pytest.Session):
+                continue
+            if isinstance(node, pytest.Directory) and isinstance(
+                node.parent, pytest.Session
+            ):
+                continue
+            mapped_names.add(node.name)
+
+        # Add the names added as extra keywords to current or parent items.
+        mapped_names.update(item.listextrakeywords())
+
+        # Add the names attached to the current function through direct assignment.
+        function_obj = getattr(item, "function", None)
+        if function_obj:
+            mapped_names.update(function_obj.__dict__)
+
+        # Add the markers to the keywords as we no longer handle them correctly.
+        mapped_names.update(mark.name for mark in item.iter_markers())
+
+        return cls(mapped_names)
+
+    def __call__(self, subname: str) -> bool:
+        subname = subname.lower()
+        names = (name.lower() for name in self._names)
+
+        for name in names:
+            if subname in name:
+                return True
+        return False
+
+
+def deselect_by_keyword(items: "List[Item]", config: Config) -> None:
+    keywordexpr = config.option.keyword.lstrip()
+    if not keywordexpr:
+        return
+
+    expr = _parse_expression(keywordexpr, "Wrong expression passed to '-k'")
+
+    remaining = []
+    deselected = []
+    for colitem in items:
+        if not expr.evaluate(KeywordMatcher.from_item(colitem)):
+            deselected.append(colitem)
+        else:
+            remaining.append(colitem)
+
+    if deselected:
+        config.hook.pytest_deselected(items=deselected)
+        items[:] = remaining
+
+
+@dataclasses.dataclass
+class MarkMatcher:
+    """A matcher for markers which are present.
+
+    Tries to match on any marker names, attached to the given colitem.
+    """
+
+    __slots__ = ("own_mark_names",)
+
+    own_mark_names: AbstractSet[str]
+
+    @classmethod
+    def from_item(cls, item: "Item") -> "MarkMatcher":
+        mark_names = {mark.name for mark in item.iter_markers()}
+        return cls(mark_names)
+
+    def __call__(self, name: str) -> bool:
+        return name in self.own_mark_names
+
+
+def deselect_by_mark(items: "List[Item]", config: Config) -> None:
+    matchexpr = config.option.markexpr
+    if not matchexpr:
+        return
+
+    expr = _parse_expression(matchexpr, "Wrong expression passed to '-m'")
+    remaining: List[Item] = []
+    deselected: List[Item] = []
+    for item in items:
+        if expr.evaluate(MarkMatcher.from_item(item)):
+            remaining.append(item)
+        else:
+            deselected.append(item)
+    if deselected:
+        config.hook.pytest_deselected(items=deselected)
+        items[:] = remaining
+
+
+def _parse_expression(expr: str, exc_message: str) -> Expression:
+    try:
+        return Expression.compile(expr)
+    except ParseError as e:
+        raise UsageError(f"{exc_message}: {expr}: {e}") from None
+
+
+def pytest_collection_modifyitems(items: "List[Item]", config: Config) -> None:
+    deselect_by_keyword(items, config)
+    deselect_by_mark(items, config)
+
+
+def pytest_configure(config: Config) -> None:
+    config.stash[old_mark_config_key] = MARK_GEN._config
+    MARK_GEN._config = config
+
+    empty_parameterset = config.getini(EMPTY_PARAMETERSET_OPTION)
+
+    if empty_parameterset not in ("skip", "xfail", "fail_at_collect", None, ""):
+        raise UsageError(
+            "{!s} must be one of skip, xfail or fail_at_collect"
+            " but it is {!r}".format(EMPTY_PARAMETERSET_OPTION, empty_parameterset)
+        )
+
+
+def pytest_unconfigure(config: Config) -> None:
+    MARK_GEN._config = config.stash.get(old_mark_config_key, None)