import json

pub struct MyStruct {
pub mut:
    valuea int
}

pub struct MyStruct2 {
pub mut:
    valuea int
    valueb ?MyStruct
}

struct Node {
    location NodeLocation @[json: 'loc']
}

struct NodeLocation {
    source_file ?SourceFile @[json: 'includedFrom']
}

struct SourceFile {
    path string @[json: 'file']
}

fn test_encode_decode() {
    assert json.encode(MyStruct2{ valuea: 1 }) == '{"valuea":1}'

    assert json.decode(MyStruct2, '{"valuea": 1}')! == MyStruct2{
        valuea: 1
        valueb: none
    }
}

fn test_encode_decode2() {
    assert json.encode(MyStruct2{ valuea: 1, valueb: none }) == '{"valuea":1}'

    assert json.decode(MyStruct2, '{"valuea": 1}')! == MyStruct2{
        valuea: 1
        valueb: none
    }
}

fn test_encode_decode3() {
    assert json.encode(MyStruct2{
        valuea: 1
        valueb: MyStruct{
            valuea: 123
        }
    }) == '{"valuea":1,"valueb":{"valuea":123}}'

    assert json.decode(MyStruct2, '{"valuea": 1}')! == MyStruct2{
        valuea: 1
        valueb: none
    }
}

fn test_main() {
    node := json.decode(Node, '{"loc": { "includedFrom": { "file": "/bin/foo" } } }')!

    source_file := node.location.source_file or {
        SourceFile{
            path: '-'
        }
    }

    assert source_file.path == '/bin/foo'
}