// Copyright 2019 YechaoLi
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#[cfg(test)]
#[macro_use]
extern crate prune_derive;

fn custom_prune(val: i32) -> i32 {
    val + 1
}

#[derive(Debug, Prune, PartialEq)]
struct Custom {
    #[prune(custom = "custom_prune")]
    val: i32,
}

#[test]
fn test_prune_custom() {
    use prune::Prune;

    assert_eq!(Custom { val: 0 }.prune(), Custom { val: 1 });
}