Add regression test for pylint-dev#5770

jacobtylerwalls · Feb 27, 2022 · b745a02 · b745a02
1 parent 90dafae
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diff --git a/ChangeLog b/ChangeLog
@@ -101,6 +101,11 @@ Release date: TBA
 
   Closes #5731
 
+* Fixed a crash involving a ``NewType`` named with an f-string.
+
+  Closes #5770
+  Ref PyCQA/astroid#1400
+
 * Improved ``bad-open-mode`` message when providing ``None`` to the ``mode``
   argument of an ``open()`` call.
 

diff --git a/doc/whatsnew/2.13.rst b/doc/whatsnew/2.13.rst
@@ -216,6 +216,11 @@ Other Changes
 
   Closes #5731
 
+* Fixed a crash involving a ``NewType`` named with an f-string.
+
+  Closes #5770
+  Ref PyCQA/astroid#1400
+
 * Improved ``bad-open-mode`` message when providing ``None`` to the ``mode``
   argument of an ``open()`` call.
 

diff --git a/tests/functional/r/regression_02/regression_newtype_fstring.py b/tests/functional/r/regression_02/regression_newtype_fstring.py
@@ -0,0 +1,9 @@
+"""Regression test for issue 5770: NewType created with f-string
+See: https://github.com/PyCQA/pylint/issues/5770
+"""
+from typing import NewType
+
+def make_new_type(suffix):
+    """Dynamically create a NewType with `suffix`"""
+    new_type = NewType(f'IntRange_{suffix}', suffix)
+    print(new_type)