in crates/paimon/src/spec/schema.rs [112:125]
fn test_create_data_field() {
let id = 1;
let name = "field1".to_string();
let typ = DataType::Int(IntType::new());
let description = "test description".to_string();
let data_field = DataField::new(id, name.clone(), typ.clone())
.with_description(Some(description.clone()));
assert_eq!(data_field.id(), id);
assert_eq!(data_field.name(), name);
assert_eq!(data_field.data_type(), &typ);
assert_eq!(data_field.description(), Some(description).as_deref());
}