Initial Commit

Library/PackageCache/com.unity.multiplayer.mlapi@3e3aef6aa0/Tests/Runtime/TickSystemTests.cs

@@ -0,0 +1,51 @@
+using System;
+using System.Collections;
+using UnityEngine;
+using UnityEngine.TestTools;
+using NUnit.Framework;
+
+namespace MLAPI.RuntimeTests
+{
+    public class TickSystemTests: IDisposable
+    {
+        private NetworkTickSystem m_TickSystem = null;
+        private float m_TestDuration = 3.0f;
+        private float m_SleepInterval = 0.001f;
+        private float m_TickInterval = 0.010f;
+
+        public void Dispose()
+        {
+            m_TickSystem.Dispose();
+            m_TickSystem = null;
+            NetworkUpdateLoop.UnregisterLoopSystems();
+        }
+
+        [UnityTest]
+        public IEnumerator VerifyTickSystem()
+        {
+            m_TickSystem = new NetworkTickSystem(m_TickInterval);
+
+            var startTick = m_TickSystem.GetTick();
+            var startTime = Time.unscaledTime;
+
+            var lastTick = startTick;
+            do
+            {
+                var currentTick = m_TickSystem.GetTick();
+                Assert.IsTrue(currentTick >= lastTick); // check monotonicity of ticks
+                lastTick = currentTick;
+
+                yield return new WaitForSeconds(m_SleepInterval);
+            } while (Time.unscaledTime - startTime <= m_TestDuration);
+
+            var endTick = m_TickSystem.GetTick();
+            var endTime = Time.unscaledTime;
+
+            var elapsedTicks = endTick - startTick;
+            var elapsedTime = endTime - startTime;
+
+            var elapsedTicksExpected = (int)(elapsedTime / m_TickInterval);
+            Assert.Less(Math.Abs(elapsedTicksExpected - elapsedTicks), 2); // +/- 1 is OK
+        }
+    }
+}