Local ktor server

LocalServer.kt

object LocalServer {

    private var server: CIOApplicationEngine? = null
    fun start() {
        val assets = InstrumentationRegistry.getInstrumentation().context.assets
        server?.stop()

        server = embeddedServer(CIO, port = 8080) {
            routing {
                get("api/path/here") {
                    call.respondText(
                        text = assets.toJson("json path here"),
                        contentType = ContentType.Application.Json,
                        status = HttpStatusCode.OK
                    )
                }
        }
        
        server.start()
    }

    private fun AssetManager.toJson(fileName: String) = open(fileName).let {
        JSONObject(it.bufferedReader().readText()).toString()
    }
}