v / vlib / json / tests / json_decode_struct_ptr_test.v
42 lines · 35 sloc · 1.07 KB · 21e8cf56c8fdbc71d752b75857964f26570547a0
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1import json


2


3struct Message {


4mut:


5    id       int


6    text     string


7    reply_to &Message


8}


9


10struct OptionalMessage {


11mut:


12    id       int


13    text     string


14    reply_to ?&OptionalMessage


15}


16


17fn test_main() {


18    mut json_data := '{"id": 1, "text": "Hello", "reply_to": {"id": 2, "text": "Hi"}}'


19    mut message := json.decode(Message, json_data)!


20    assert message.reply_to.id == 2


21


22    json_data = '{"id": 1, "text": "Hello", "reply_to": {"id": 2, "text": "Hi", "reply_to": {}}}'


23    message = json.decode(Message, json_data)!


24    assert message.reply_to.reply_to.reply_to == unsafe { nil }


25


26    json_data = '{"id": 1, "text": "Hello", "reply_to": {"id": 2, "text": "Hi", "reply_to": {"id": 5}}}'


27    message = json.decode(Message, json_data)!


28    assert message.reply_to.reply_to.id == 5


29}


30


31fn test_recursive_optional_struct_ptr() {


32    json_data := '{"id": 1, "text": "Hello", "reply_to": {"id": 2, "text": "Hi", "reply_to": null}}'


33    message := json.decode(OptionalMessage, json_data)!


34    reply := message.reply_to or {


35        assert false


36        return


37    }


38


39    assert reply.id == 2


40    assert reply.text == 'Hi'


41    assert reply.reply_to == none


42}


43