Coverage Summary for Class: Main (<empty package name>)

 import java.util.*
 import javax.crypto.Mac
 import javax.crypto.spec.SecretKeySpec
 
 fun main() {
   println("Hello Kotlin! ${App.KOTLIN_VERSION}")
   println("Security Manager Allowed: ${System.getProperty("java.security.manager")}")
   println("Security Manager: ${System.getSecurityManager()}")
   // echo -n "test" | openssl dgst -sha256 -hmac 1234 -binary | base64
   println("test".hmacSha256("1234"))
 }
 
 fun String.hmacSha256(secret: String): String {
   val key = SecretKeySpec(secret.encodeToByteArray(), "HmacSHA256")
   val mac: Mac = Mac.getInstance("HmacSHA256")
   mac.init(key)
   val out = mac.doFinal(encodeToByteArray())
   return Base64.getEncoder().encodeToString(out)
 }
 
 /**
  * See the graph for more details,
  * ```
  * graph LR
  *   A[Christmas] -->|Get money| B(Go shopping)
  *   B --> C{Let me think}
  *   C -->|One| D[Laptop]
  *   C -->|Two| E[iPhone]
  *   C -->|Three| F[fa:fa-car Car]
  * ```
  */
 sealed class Result<out T> {
   data class Success<T : Any>(val data: T) : Result<T>()
 
   sealed class Error(val exec: Exception) : Result<Nothing>() {
     class RecException(val e: Exception) : Error(e)
 
     class NonRecException(val e: Exception) : Error(e)
   }
 
   data object InProgress : Result<Nothing>()
 }