ID

4dff711

date

2026-11-06 20:32:43+00:00

author

Alex Chan <alexc@tailscale.com>

parent

33d832a

message

tests: add a test for functions with a string return annotation

changed files

1 file, 13 additions

• tests/test_manager.py

Changed files

tests/test_manager.py (18240 → 18597)

diff --git a/tests/test_manager.py b/tests/test_manager.py
index c6e3bda..cd4b969 100644
--- a/tests/test_manager.py
+++ b/tests/test_manager.py
@@ -56,6 +56,19 @@ class FunkyCacheTestSuite(ABC):
         assert initial("banana") == "B"
         assert calls == {"apple": 1, "banana": 1}
 
+    def test_cache_with_string_annotation(self, cache: FunkyCache) -> None:
+        """
+        You can register a function which uses a string as its
+        return annotation.
+        """
+
+        @cache.register
+        def initial(s: str) -> "str":
+            return s[0].upper()
+
+        for _ in range(3):
+            assert initial("apple") == "A"
+
     def test_per_function_caches_are_independent(self, cache: FunkyCache) -> None:
         """
         Different functions have different caches.