fix: handle unhashable schema types like lists to prevent unreachable…

… exception

tests/test_lib.py

@@ -1,5 +1,6 @@
 from enum import Enum
 
+import pytest
 import voluptuous as vol
 
 from voluptuous_serialize import UNSUPPORTED, convert
@@ -216,11 +217,7 @@ class TestEnum(Enum):
     } == convert(vol.Schema(vol.Coerce(TestEnum)))
 
 
-def test_invalid_schema():
-    # check if an exception is raised when an invalid schema is passed
-    try:
-        convert(vol.Schema(None))
-    except Exception as e:
-        assert str(e) == "Unable to convert schema: None"
-    else:
-        assert False, "Expected an exception to be raised"
+@pytest.mark.parametrize("invalid_schema", [None, []])
+def test_invalid_schema(invalid_schema):
+    with pytest.raises(ValueError):
+        convert(vol.Schema(invalid_schema))

voluptuous_serialize/__init__.py

@@ -1,6 +1,6 @@
 """Module to convert voluptuous schemas to dictionaries."""
 
-from collections.abc import Mapping
+from collections.abc import Hashable, Mapping
 from enum import Enum
 
 import voluptuous as vol
@@ -112,7 +112,7 @@ def convert(schema, *, custom_serializer=None):
     if isinstance(schema, vol.Coerce):
         schema = schema.type
 
-    if schema in TYPES_MAP:
+    if isinstance(schema, Hashable) and schema in TYPES_MAP:
         return {"type": TYPES_MAP[schema]}
 
     if isinstance(schema, (str, int, float, bool)):