// 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;

#[derive(Debug, Prune, PartialEq)]
struct Struct {
    #[prune(trim)]
    option: Option<Option<Option<String>>>,
}

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

    let t = Struct {
        option: Some(Some(Some(" trim option ".to_owned()))),
    }
    .prune();
    assert_eq!(
        t,
        Struct {
            option: Some(Some(Some("trim option".to_owned())))
        }
    );

    let t = Struct {
        option: Some(Some(Some("  \n  ".to_owned()))),
    }
    .prune();
    assert_eq!(t, Struct { option: None });

    let t = Struct {
        option: Some(Some(None)),
    }
    .prune();
    assert_eq!(t, Struct { option: None });

    assert_eq!(Some(Option::<Struct>::None).prune(), None);

    assert_eq!(Some(Some(Option::<Struct>::None)).prune(), None);
}