[O] Separate common functions for tests

src/test/kotlin/ext/TestExt.kt

@@ -0,0 +1,20 @@
+package ext
+
+import kotlin.random.Random
+import kotlin.random.nextInt
+
+const val CLIENT_ID = "A1234567890"
+const val FTK = "test"
+const val HOST = "http://localhost"
+val ACCESS_CODE = "9900" + (1..16).map { Random.nextInt(0..9) }.joinToString("")
+
+inline fun <reified T> String.json() = try {
+    JACKSON.readValue(this, T::class.java)
+}
+catch (e: Exception) {
+    println("Failed to parse JSON: $this")
+    throw e
+}
+
+fun String.jsonMap(): Map<String, Any?> = json()
+fun String.jsonArray(): List<Map<String, Any?>> = json()