test: create digital twin manager stub

Author: AndreaGiulianelli

src/test/kotlin/infrastructure/digitaltwins/DigitalTwinManagerStub.kt

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2023. Smart Operating Block
+ *
+ * Use of this source code is governed by an MIT-style
+ * license that can be found in the LICENSE file or at
+ * https://opensource.org/licenses/MIT.
+ */
+
+package infrastructure.digitaltwins
+
+import application.controller.manager.RoomDigitalTwinManager
+import entity.zone.Room
+import entity.zone.RoomID
+
+/**
+ * Simple Stub for [RoomDigitalTwinManager] in order to perform tests.
+ */
+class DigitalTwinManagerStub : RoomDigitalTwinManager {
+    private val roomList: MutableSet<Room> = mutableSetOf()
+
+    override fun createRoomDigitalTwin(room: Room): Boolean {
+        this.roomList.add(room)
+        return true
+    }
+
+    override fun deleteRoomDigitalTwin(roomId: RoomID): Boolean {
+        return this.roomList.removeIf { it.id == roomId }
+    }
+
+    override fun findBy(roomId: RoomID): Room? {
+        return this.roomList.find { it.id == roomId }
+    }
+}