Add quotes to field name in serialization warning (#1816)

Author: Viicos

src/serializers/errors.rs

@@ -195,7 +195,7 @@ impl PydanticSerializationUnexpectedValue {
             if let Some(field_name) = &self.field_name {
                 write!(
                     message,
-                    " [field_name={field_name}, input_value={value_str}, input_type={input_type}]"
+                    " [field_name='{field_name}', input_value={value_str}, input_type={input_type}]"
                 )
                 .expect("writing to string should never fail");
             } else {

tests/serializers/test_model.py

@@ -286,7 +286,7 @@ def test_model_wrong_warn():
 
     with pytest.warns(
         UserWarning,
-        match=r"Expected `int` - serialized value may not be as expected \[field_name=foo, input_value='lorem', input_type=str\]",
+        match=r"Expected `int` - serialized value may not be as expected \[field_name='foo', input_value='lorem', input_type=str\]",
     ):
         assert s.to_python(BasicModel(foo='lorem')) == {'foo': 'lorem'}