From 02c07c893c47200e7da52a29e6ed7f05e2d63f52 Mon Sep 17 00:00:00 2001
From: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
Date: Mon, 6 Jan 2025 12:21:25 -0800
Subject: [PATCH] Add regression test for NamedTuple with recursive bound
 (#18399)

See
https://github.com/python/mypy/pull/18351#pullrequestreview-2525435197

Co-authored-by: ilevkivskyi
---
 test-data/unit/check-namedtuple.test | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/test-data/unit/check-namedtuple.test b/test-data/unit/check-namedtuple.test
index 566b5ef57350..172228820add 100644
--- a/test-data/unit/check-namedtuple.test
+++ b/test-data/unit/check-namedtuple.test
@@ -1460,3 +1460,17 @@ Func = NamedTuple('Func', [
 ])
 [builtins fixtures/tuple.pyi]
 [typing fixtures/typing-namedtuple.pyi]
+
+[case testGenericNamedTupleRecursiveBound]
+from typing import Generic, NamedTuple, TypeVar
+T = TypeVar("T", bound="NT")
+class NT(NamedTuple, Generic[T]):
+    parent: T
+    item: int
+
+def main(n: NT[T]) -> None:
+    reveal_type(n.parent)  # N: Revealed type is "T`-1"
+    reveal_type(n.item)  # N: Revealed type is "builtins.int"
+
+[builtins fixtures/tuple.pyi]
+[typing fixtures/typing-namedtuple.pyi]