Integration test to test restartround.

Content.IntegrationTests/Tests/Networking/SimplePredictReconcileTest.cs

@@ -37,7 +37,7 @@ namespace Content.IntegrationTests.Tests.Networking
         {
             // Initialize client & server with text component and system registered.
             // They can't be registered/detected automatically.
-            var (client, server) = await StartConnectedServerClientPair(
+            var (client, server) = await StartConnectedServerDummyTickerClientPair(
                 new ClientContentIntegrationOption
                 {
                     // This test is designed around specific timing values and when I wrote it interpolation was off.

Content.IntegrationTests/Tests/RestartRoundTest.cs

@@ -0,0 +1,24 @@
+using System.Threading.Tasks;
+using Content.Server.Interfaces.GameTicking;
+using NUnit.Framework;
+using Robust.Shared.IoC;
+
+namespace Content.IntegrationTests.Tests
+{
+    [TestFixture]
+    public class RestartRoundTest : ContentIntegrationTest
+    {
+        [Test]
+        public async Task Test()
+        {
+            var (client, server) = await StartConnectedServerClientPair();
+
+            server.Post(() =>
+            {
+                IoCManager.Resolve<IGameTicker>().RestartRound();
+            });
+
+            await RunTicksSync(client, server, 10);
+        }
+    }
+}