add ydb deps

1 files changed, 91 insertions, 0 deletions

diff --git a/contrib/python/pytest/py3/_pytest/scope.py b/contrib/python/pytest/py3/_pytest/scope.py
new file mode 100644
index 0000000000..7a746fb9fa
--- /dev/null
+++ b/contrib/python/pytest/py3/_pytest/scope.py
@@ -0,0 +1,91 @@
+"""
+Scope definition and related utilities.
+
+Those are defined here, instead of in the 'fixtures' module because
+their use is spread across many other pytest modules, and centralizing it in 'fixtures'
+would cause circular references.
+
+Also this makes the module light to import, as it should.
+"""
+from enum import Enum
+from functools import total_ordering
+from typing import Optional
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from typing_extensions import Literal
+
+    _ScopeName = Literal["session", "package", "module", "class", "function"]
+
+
+@total_ordering
+class Scope(Enum):
+    """
+    Represents one of the possible fixture scopes in pytest.
+
+    Scopes are ordered from lower to higher, that is:
+
+              ->>> higher ->>>
+
+    Function < Class < Module < Package < Session
+
+              <<<- lower  <<<-
+    """
+
+    # Scopes need to be listed from lower to higher.
+    Function: "_ScopeName" = "function"
+    Class: "_ScopeName" = "class"
+    Module: "_ScopeName" = "module"
+    Package: "_ScopeName" = "package"
+    Session: "_ScopeName" = "session"
+
+    def next_lower(self) -> "Scope":
+        """Return the next lower scope."""
+        index = _SCOPE_INDICES[self]
+        if index == 0:
+            raise ValueError(f"{self} is the lower-most scope")
+        return _ALL_SCOPES[index - 1]
+
+    def next_higher(self) -> "Scope":
+        """Return the next higher scope."""
+        index = _SCOPE_INDICES[self]
+        if index == len(_SCOPE_INDICES) - 1:
+            raise ValueError(f"{self} is the upper-most scope")
+        return _ALL_SCOPES[index + 1]
+
+    def __lt__(self, other: "Scope") -> bool:
+        self_index = _SCOPE_INDICES[self]
+        other_index = _SCOPE_INDICES[other]
+        return self_index < other_index
+
+    @classmethod
+    def from_user(
+        cls, scope_name: "_ScopeName", descr: str, where: Optional[str] = None
+    ) -> "Scope":
+        """
+        Given a scope name from the user, return the equivalent Scope enum. Should be used
+        whenever we want to convert a user provided scope name to its enum object.
+
+        If the scope name is invalid, construct a user friendly message and call pytest.fail.
+        """
+        from _pytest.outcomes import fail
+
+        try:
+            # Holding this reference is necessary for mypy at the moment.
+            scope = Scope(scope_name)
+        except ValueError:
+            fail(
+                "{} {}got an unexpected scope value '{}'".format(
+                    descr, f"from {where} " if where else "", scope_name
+                ),
+                pytrace=False,
+            )
+        return scope
+
+
+_ALL_SCOPES = list(Scope)
+_SCOPE_INDICES = {scope: index for index, scope in enumerate(_ALL_SCOPES)}
+
+
+# Ordered list of scopes which can contain many tests (in practice all except Function).
+HIGH_SCOPES = [x for x in Scope if x is not Scope.Function]