import json

struct TestOptionalRawString {
    id   int
    data ?string @[raw]
}

struct TestRawStringifiedObject {
    metadata string @[raw]
}

fn test_raw_opt() {
    test := TestOptionalRawString{
        id:   1
        data: 't
e
s
t'
    }
    encoded := json.encode(test)
    assert json.decode(TestOptionalRawString, encoded)!.data? == r'"t\ne\ns\nt"'
}

fn test_raw_none() {
    test := TestOptionalRawString{
        id:   1
        data: none
    }
    encoded := json.encode(test)
    r := json.decode(TestOptionalRawString, encoded)!.data
    assert r == none
}

fn test_raw_empty_string() {
    test := TestOptionalRawString{
        id:   1
        data: ''
    }
    encoded := json.encode(test)
    r := json.decode(TestOptionalRawString, encoded)!.data or { 'z' }
    assert r == '""'
}

fn test_stringified_object_returns_error_for_raw_field() {
    stringified_json :=
        json.encode('{"metadata":{"topLevelProperty":{"nestedProperty1":"Value 1"}}}')
    json.decode(TestRawStringifiedObject, stringified_json) or {
        assert err.msg().starts_with('Json element is not an object:')
        return
    }
    assert false
}