Gson version

"com.squareup.retrofit2:converter-gson:2.9.0"

Java / Android version

Android Studio Giraffe | 2022.3.1 Patch 2

Used tools

[ ] Maven; version:
[ ] Gradle; version:
[ ] ProGuard (attach the configuration file please); version:
[ ] ...

Description

as described in the documentation The method deserializes the specified Json into an object of the specified class. Returns: an object of type T from the string. Returns null if json is null or if json is empty. Throws: JsonSyntaxException – if json is not a valid representation for an object of type classOfT

Expected behavior

If the JsonString is not a valid representation of the Class, I expect to thaw an exception.

Actual behavior

I get an Object of the Class with null values even though the Class parameters are not nullable.

Reproduction steps

`data class PingResponse( val topic: String, val thing_Name: String, val Node_Version: String, val ip: Ip, )

data class Ip( val rpi_id: Int, val rpi_ip: String, val publicIPv4: String )

try { val jsonPing = Gson().fromJson( String(pingResponse.data), PingResponse::class.java ) this.ping.value = jsonPing Log.d("pingResponse", "⭕⭕⭕⭕ from $ping") Log.d("ping", "⛔🔔🔔🔔🔔JSONObject: ${String(pingResponse.data)} ")

    }
    catch (e: Exception){
        Log.d("ping", "⛔🔔🔔🔔🔔Error converting JSONObject: ${e.message} ")
        Log.d("ping", "⛔🔔🔔🔔🔔JSONObject: ${String(pingResponse.data)} ")
    }

2 This is the pingResponse String ⛔🔔🔔🔔🔔JSONObject: {"topic":"$aws/things/home/bash/exec","qos":0,"retain":false,"_msgid":"187805cecf3a3b42","payload":"","rc":{"code":1,"message":"Command failed: ping\nping: usage error: Destination address required\n"}}`

And this is the ping Object that the method created. Pay attention that the properties thing_Name, Node_Version and ip are null. ⭕⭕⭕⭕ from MutableState(value=PingResponse(topic=$aws/things/home/bash/exec, thing_Name=null, Node_Version=null, ip=null))@135859162

google / gson

fromJson(String json, Class<T> classOfT) throws JsonSyntaxException is not thawing exception #2572