Improve coverage

Chia-Network · Jan 23, 2024 · 2963b7d · 2963b7d
1 parent 6f56daa
commit 2963b7d
Showing 1 changed file with 11 additions and 1 deletion.
diff --git a/tests/test_clvm_serde.py b/tests/test_clvm_serde.py
@@ -1,5 +1,5 @@
 from dataclasses import dataclass, field
-from typing import List, Tuple, Optional
+from typing import List, Optional, Union, Tuple
 
 import random
 
@@ -159,6 +159,16 @@ class Foo:
     fp = from_program_for_type(Foo)
     assert fp(tp(Foo([]))) == Foo([])
 
+    @dataclass
+    class Bar:
+        a: Union[int, str]
+
+    with pytest.raises(ValueError):
+        _ = to_program_for_type(Bar)
+
+    with pytest.raises(ValueError):
+        _ = from_program_for_type(Bar)
+
 
 def test_serde_frugal():
     @dataclass