[7.4.x] nodes: fix tracebacks from collection errors are not getting pruned

changelog/11710.bugfix.rst

@@ -0,0 +1 @@
+Fixed tracebacks from collection errors not getting pruned.

src/_pytest/nodes.py

@@ -567,7 +567,7 @@ def _traceback_filter(self, excinfo: ExceptionInfo[BaseException]) -> Traceback:
  ntraceback = traceback.cut(path=self.path)
  if ntraceback == traceback:
  ntraceback = ntraceback.cut(excludepath=tracebackcutdir)
- return excinfo.traceback.filter(excinfo)
+ return ntraceback.filter(excinfo)
  return excinfo.traceback
 
 

testing/test_collection.py

@@ -345,6 +345,29 @@ def pytest_make_collect_report():
  result = pytester.runpytest(p)
  result.stdout.fnmatch_lines(["*ERROR collecting*", "*header1*"])
 
+ def test_collection_error_traceback_is_clean(self, pytester: Pytester) -> None:
+ """When a collection error occurs, the report traceback doesn't contain
+ internal pytest stack entries.
+
+ Issue #11710.
+ """
+ pytester.makepyfile(
+ """
+ raise Exception("LOUSY")
+ """
+ )
+ result = pytester.runpytest()
+ result.stdout.fnmatch_lines(
+ [
+ "*ERROR collecting*",
+ "test_*.py:1: in <module>",
+ ' raise Exception("LOUSY")',
+ "E Exception: LOUSY",
+ "*= short test summary info =*",
+ ],
+ consecutive=True,
+ )
+
 
 class TestCustomConftests:
  def test_ignore_collect_path(self, pytester: Pytester) -> None: