Major fixes and new features

venv/lib/python3.12/site-packages/coverage/context.py

@@ -0,0 +1,74 @@
+# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
+# For details: https://github.com/nedbat/coveragepy/blob/master/NOTICE.txt
+
+"""Determine contexts for coverage.py"""
+
+from __future__ import annotations
+
+from collections.abc import Sequence
+from types import FrameType
+
+from coverage.types import TShouldStartContextFn
+
+
+def combine_context_switchers(
+    context_switchers: Sequence[TShouldStartContextFn],
+) -> TShouldStartContextFn | None:
+    """Create a single context switcher from multiple switchers.
+
+    `context_switchers` is a list of functions that take a frame as an
+    argument and return a string to use as the new context label.
+
+    Returns a function that composites `context_switchers` functions, or None
+    if `context_switchers` is an empty list.
+
+    When invoked, the combined switcher calls `context_switchers` one-by-one
+    until a string is returned.  The combined switcher returns None if all
+    `context_switchers` return None.
+    """
+    if not context_switchers:
+        return None
+
+    if len(context_switchers) == 1:
+        return context_switchers[0]
+
+    def should_start_context(frame: FrameType) -> str | None:
+        """The combiner for multiple context switchers."""
+        for switcher in context_switchers:
+            new_context = switcher(frame)
+            if new_context is not None:
+                return new_context
+        return None
+
+    return should_start_context
+
+
+def should_start_context_test_function(frame: FrameType) -> str | None:
+    """Is this frame calling a test_* function?"""
+    co_name = frame.f_code.co_name
+    if co_name.startswith("test") or co_name == "runTest":
+        return qualname_from_frame(frame)
+    return None
+
+
+def qualname_from_frame(frame: FrameType) -> str | None:
+    """Get a qualified name for the code running in `frame`."""
+    co = frame.f_code
+    fname = co.co_name
+    method = None
+    if co.co_argcount and co.co_varnames[0] == "self":
+        self = frame.f_locals.get("self", None)
+        method = getattr(self, fname, None)
+
+    if method is None:
+        func = frame.f_globals.get(fname)
+        if func is None:
+            return None
+        return f"{func.__module__}.{fname}"
+
+    func = getattr(method, "__func__", None)
+    if func is None:
+        cls = self.__class__
+        return f"{cls.__module__}.{cls.__name__}.{fname}"
+
+    return f"{func.__module__}.{func.__qualname__}"