Add test case for class union < 3.10

astral-sh · Dec 27, 2024 · 5239fa9 · 5239fa9
1 parent a5f0dad
commit 5239fa9
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/crates/red_knot_python_semantic/resources/mdtest/binary/classes.md b/crates/red_knot_python_semantic/resources/mdtest/binary/classes.md
@@ -15,3 +15,13 @@ class B: ...
 
 reveal_type(A | B)  # revealed: UnionType
 ```
+
+## Union of two classes (prior to 3.10)
+
+```py
+class A: ...
+class B: ...
+
+# error: "Operator `|` is unsupported between objects of type `Literal[A]` and `Literal[B]`"
+reveal_type(A | B)  # revealed: Unknown
+```