Handle non-json native enum values (#7056)

Co-authored-by: David Montague <35119617+dmontagu@users.noreply.github.com>

pydantic/json_schema.py

@@ -709,6 +709,8 @@ def literal_schema(self, schema: core_schema.LiteralSchema) -> JsonSchemaValue:
             The generated JSON schema.
         """
         expected = [v.value if isinstance(v, Enum) else v for v in schema['expected']]
+        # jsonify the expected values
+        expected = [to_jsonable_python(v) for v in expected]
 
         if len(expected) == 1:
             return {'const': expected[0]}

tests/test_json_schema.py

@@ -5415,3 +5415,16 @@ class A(MyBaseModel):
         'title': 'B',
         'type': 'object',
     }
+
+
+def test_enum_complex_value() -> None:
+    """https://github.com/pydantic/pydantic/issues/7045"""
+
+    class MyEnum(Enum):
+        foo = (1, 2)
+        bar = (2, 3)
+
+    ta = TypeAdapter(MyEnum)
+
+    # insert_assert(ta.json_schema())
+    assert ta.json_schema() == {'enum': [[1, 2], [2, 3]], 'title': 'MyEnum', 'type': 'array'}