import json

pub struct Dto {
pub:
    key      string  @[raw]
    key2     string  @[raw]
    data     ?string @[raw]
    optional ?string @[raw]
}

fn test_main() {
    raw_json := '{
        "key": [1, 2, "test"],
        "key2": { "test": 1 },
        "data": { "test": 1 },
        "optional": "test"
    }'

    dto := json.decode(Dto, raw_json)!

    println(dto)
    assert dto.data? == '{"test":1}'
}

fn test_none() {
    raw_json := '{
        "key": [1, 2, "test"],
        "optional": "test"
    }'

    dto := json.decode(Dto, raw_json)!

    println(dto)
    assert dto.data == none
    assert dto.optional? == '"test"'
}

fn test_null() {
    raw_json := '{
        "key": [1, 2, "test"],
           "key2": null,
        "data": null,
        "optional": "test"
    }'

    dto := json.decode(Dto, raw_json)!

    println(dto)
    assert dto.key2 == 'null'
    assert dto.data? == 'null'
}

fn test_not_set() {
    raw_json := '{
    }'

    dto := json.decode(Dto, raw_json)!

    println(dto)
    assert dto.data == none
    assert dto.optional == none
}