diff --git a/openapi_core/unmarshalling/schemas/unmarshallers.py b/openapi_core/unmarshalling/schemas/unmarshallers.py
index 53ddcc34..1df9ed09 100644
--- a/openapi_core/unmarshalling/schemas/unmarshallers.py
+++ b/openapi_core/unmarshalling/schemas/unmarshallers.py
@@ -137,6 +137,9 @@ def _unmarshal_properties(
class MultiTypeUnmarshaller(PrimitiveUnmarshaller):
def __call__(self, value: Any) -> Any:
primitive_type = self.schema_validator.get_primitive_type(value)
+ # OpenAPI 3.0: handle no type for None
+ if primitive_type is None:
+ return None
unmarshaller = self.schema_unmarshaller.get_type_unmarshaller(
primitive_type
)
@@ -247,6 +250,9 @@ def unmarshal(self, value: Any) -> Any:
schema_type = self.schema.getkey("type")
type_unmarshaller = self.get_type_unmarshaller(schema_type)
typed = type_unmarshaller(value)
+ # skip finding format for None
+ if typed is None:
+ return None
schema_format = self.find_format(value)
if schema_format is None:
return typed
diff --git a/openapi_core/validation/schemas/validators.py b/openapi_core/validation/schemas/validators.py
index c822a82f..7a764e31 100644
--- a/openapi_core/validation/schemas/validators.py
+++ b/openapi_core/validation/schemas/validators.py
@@ -94,6 +94,7 @@ def get_primitive_type(self, value: Any) -> Optional[str]:
continue
assert isinstance(schema_type, (str, type(None)))
return schema_type
+ # OpenAPI 3.0: None is not a primitive type so None value will not find any type
return None
def iter_valid_schemas(self, value: Any) -> Iterator[SchemaPath]:
diff --git a/tests/integration/unmarshalling/test_unmarshallers.py b/tests/integration/unmarshalling/test_unmarshallers.py
index 764fc3af..54e944a3 100644
--- a/tests/integration/unmarshalling/test_unmarshallers.py
+++ b/tests/integration/unmarshalling/test_unmarshallers.py
@@ -1840,6 +1840,25 @@ def test_object_property_nullable(self, unmarshallers_factory):
assert result == value
+ def test_subschema_nullable(self, unmarshallers_factory):
+ schema = {
+ "oneOf": [
+ {
+ "type": "integer",
+ },
+ {
+ "nullable": True,
+ },
+ ]
+ }
+ spec = SchemaPath.from_dict(schema)
+ unmarshaller = unmarshallers_factory.create(spec)
+ value = None
+
+ result = unmarshaller.unmarshal(value)
+
+ assert result is None
+
class TestOAS30RequestSchemaUnmarshallersFactory(
BaseTestOASSchemaUnmarshallersFactoryCall,
@@ -2086,3 +2105,22 @@ def test_any_null(self, unmarshallers_factory):
result = unmarshaller.unmarshal(None)
assert result is None
+
+ def test_subschema_null(self, unmarshallers_factory):
+ schema = {
+ "oneOf": [
+ {
+ "type": "integer",
+ },
+ {
+ "type": "null",
+ },
+ ]
+ }
+ spec = SchemaPath.from_dict(schema)
+ unmarshaller = unmarshallers_factory.create(spec)
+ value = None
+
+ result = unmarshaller.unmarshal(value)
+
+ assert result is None
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