Added DelayHandlerTests

src/test/scala/de/knockoutwhist/DelayHandlerTests.scala

@@ -0,0 +1,36 @@
+package de.knockoutwhist
+
+import de.knockoutwhist.events.util.DelayEvent
+import de.knockoutwhist.utils.DelayHandler
+import de.knockoutwhist.utils.events.EventHandler
+import org.scalatest.concurrent.*
+import org.scalatest.matchers.should.Matchers
+import org.scalatest.time.SpanSugar.*
+import org.scalatest.wordspec.AnyWordSpec
+
+import scala.language.postfixOps
+
+class DelayHandlerTests extends AnyWordSpec with TimeLimits with Matchers {
+
+  private val eventHandler = new EventHandler() {}
+  eventHandler.addListener(DelayHandler)
+
+  "A delay event" should  {
+    val delayEvent = DelayEvent(100)
+    "be able to be created" in {
+      delayEvent should not be null
+    }
+    "have the correct id" in {
+      delayEvent.id should be ("DelayEvent")
+    }
+    "have the correct delay" in {
+      delayEvent.delay should be (100)
+    }
+    "not be longer than 120ms if it's set to 100ms" in {
+      failAfter(120 millis) {
+        eventHandler.invoke(delayEvent)
+      }
+    }
+  }
+
+}