From 05da0e45a8feb2c66815aa35850acf8efaa6747c Mon Sep 17 00:00:00 2001
From: p1c2u <maciag.artur@gmail.com>
Date: Mon, 24 Apr 2023 12:14:43 +0100
Subject: [PATCH] multi types schema format unmarshal fix

---
 .../unmarshalling/schemas/unmarshallers.py    | 16 +++++++++-------
 .../unmarshalling/test_unmarshallers.py       | 19 +++++++++++++++++++
 2 files changed, 28 insertions(+), 7 deletions(-)

diff --git a/openapi_core/unmarshalling/schemas/unmarshallers.py b/openapi_core/unmarshalling/schemas/unmarshallers.py
index 27c63179..a97abb93 100644
--- a/openapi_core/unmarshalling/schemas/unmarshallers.py
+++ b/openapi_core/unmarshalling/schemas/unmarshallers.py
@@ -228,12 +228,10 @@ def unmarshal(self, schema_format: str, value: Any) -> Any:
             return value
         try:
             return format_unmarshaller(value)
-        except (ValueError, TypeError) as exc:
-            raise FormatUnmarshalError(value, schema_format, exc)
+        except (ValueError, TypeError):
+            return value
 
-    def get_unmarshaller(
-        self, schema_format: str
-    ) -> Optional[FormatUnmarshaller]:
+    def get_unmarshaller(self, schema_format: str) -> Optional[FormatUnmarshaller]:
         if schema_format in self.custom_formatters:
             formatter = self.custom_formatters[schema_format]
             return formatter.format
@@ -316,8 +314,12 @@ def evolve(self, schema: Spec) -> "SchemaUnmarshaller":
 
     def find_format(self, value: Any) -> Optional[str]:
         for schema in self.iter_valid_schemas(value):
-            if "format" in schema:
-                return str(schema.getkey("format"))
+            if "format" not in schema:
+                continue
+            schema_validator = self.schema_validator.evolve(schema)
+            if not schema_validator.format_validator(value):
+                continue
+            return str(schema.getkey("format"))
         return None
 
     def iter_valid_schemas(self, value: Any) -> Iterator[Spec]:
diff --git a/tests/integration/unmarshalling/test_unmarshallers.py b/tests/integration/unmarshalling/test_unmarshallers.py
index 3040adda..e46246bb 100644
--- a/tests/integration/unmarshalling/test_unmarshallers.py
+++ b/tests/integration/unmarshalling/test_unmarshallers.py
@@ -2060,6 +2060,25 @@ def test_nultiple_types_invalid(self, unmarshallers_factory, types, value):
         assert len(exc_info.value.schema_errors) == 1
         assert "is not of type" in exc_info.value.schema_errors[0].message
 
+    @pytest.mark.parametrize(
+        "types,format,value,expected",
+        [
+            (["string", "null"], "date", None, None),
+            (["string", "null"], "date", "2018-12-13", date(2018, 12, 13)),
+        ],
+    )
+    def test_multiple_types_format_valid(self, unmarshallers_factory, types, format, value, expected):
+        schema = {
+            "type": types,
+            "format": format,
+        }
+        spec = Spec.from_dict(schema, validator=None)
+        unmarshaller = unmarshallers_factory.create(spec)
+
+        result = unmarshaller.unmarshal(value)
+
+        assert result == expected
+
     def test_any_null(self, unmarshallers_factory):
         schema = {}
         spec = Spec.from_dict(schema, validator=None)