Fix false positive for `unused-argument` where nested function uses parent argument as a `nonlocal` (#5906)

Co-authored-by: Pierre Sassoulas <pierre.sassoulas@gmail.com>

3 files changed, 10 insertions, 1 deletions

diff --git a/tests/functional/u/unused/unused_argument_py3.py b/tests/functional/u/unused/unused_argument_py3.py
index 4d0fd9adc..2529e6caa 100644
--- a/tests/functional/u/unused/unused_argument_py3.py
+++ b/tests/functional/u/unused/unused_argument_py3.py
@@ -7,3 +7,12 @@ def func(first, *, second): # [unused-argument, unused-argument]
 def only_raises(first, second=42): # [unused-argument]
     if first == 24:
         raise ValueError
+
+
+def increment_factory(initial):
+
+    def increment():
+        nonlocal initial
+        initial += 1
+
+    return increment
diff --git a/tests/functional/u/unused/unused_name_from_wilcard_import.py b/tests/functional/u/unused/unused_name_from_wildcard_import.py
index 54658b855..54658b855 100644
--- a/tests/functional/u/unused/unused_name_from_wilcard_import.py
+++ b/tests/functional/u/unused/unused_name_from_wildcard_import.py
diff --git a/tests/functional/u/unused/unused_name_from_wilcard_import.txt b/tests/functional/u/unused/unused_name_from_wildcard_import.txt
index c939b8260..0289a13fb 100644
--- a/tests/functional/u/unused/unused_name_from_wilcard_import.txt
+++ b/tests/functional/u/unused/unused_name_from_wildcard_import.txt
@@ -1,4 +1,4 @@
-unused-wildcard-import:3:0:3:34::Unused import(s) func and only_raises from wildcard import of unused_argument_py3:UNDEFINED
+unused-wildcard-import:3:0:3:34::Unused import(s) func, only_raises and increment_factory from wildcard import of unused_argument_py3:UNDEFINED
 wildcard-import:3:0:3:34::Wildcard import unused_argument_py3:UNDEFINED
 unused-wildcard-import:4:0:4:38::Unused import(s) VAR from wildcard import of unused_global_variable1:UNDEFINED
 wildcard-import:4:0:4:38::Wildcard import unused_global_variable1:UNDEFINED