Add junit dependencies

build.sbt

@@ -1,8 +1,9 @@
 ThisBuild / version := "0.1.0-SNAPSHOT"
 
-ThisBuild / scalaVersion := "2.13.11"
+ThisBuild / scalaVersion := "3.2.2"
 
 lazy val root = (project in file("."))
   .settings(
-    name := "PlagueDotScala"
-  )
+    name := "PlagueDotScala",
+    libraryDependencies += "com.github.sbt" % "junit-interface" % "0.13.3" % Test
+)

src/main/scala/controller/GameEngine.scala

@@ -1,3 +1,6 @@
 package controller
 
+class GameEngine():
+  def start(): Void =
+    start()
 

src/main/scala/model/world/Region.scala

@@ -0,0 +1,5 @@
+package model.world
+
+class Region {
+
+}

src/test/scala/model/world/TestRegion.scala

@@ -0,0 +1,7 @@
+package model.world
+import org.junit.Assert.assertEquals
+import org.junit.Test
+
+class TestRegion {
+
+}