FetchTodos.kt

@Test
fun getTodos(){
    OkHttpClient().newCall(Request.Builder().url("https://jsonplaceholder.typicode.com/todos").build()).enqueue(object : Callback {
        override fun onFailure(call: Call?, e: IOException?) {} //Handle Network failure

        override fun onResponse(call: Call?, response: Response?) {
            response!!.body()!!.use {responsebody ->
                val root = JsonParser().parse(responsebody.charStream())
                assertTrue(root is JsonElement) //root is a JsonElement object
                assertTrue(root is JsonArray) //root is actually, a JsonArray object
            }
        }
    })
}