Add another client test

tests/Tgstation.Server.Client.Tests/Components/TestDreamDaemonClient.cs

@@ -0,0 +1,39 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Moq;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Tgstation.Server.Api;
+using Tgstation.Server.Api.Models;
+
+namespace Tgstation.Server.Client.Components.Tests
+{
+	[TestClass]
+	public sealed class TestDreamDaemonClient
+	{
+		[TestMethod]
+		public async Task TestStart()
+		{
+			var example = new Job
+			{
+				Id = 347,
+				StartedAt = DateTimeOffset.Now
+			};
+
+			var inst = new Instance
+			{
+				Id = 4958
+			};
+
+			var mockApiClient = new Mock<IApiClient>();
+			mockApiClient.Setup(x => x.Create<Job>(Routes.DreamDaemon, inst.Id, It.IsAny<CancellationToken>())).Returns(Task.FromResult(example));
+
+			var client = new DreamDaemonClient(mockApiClient.Object, inst);
+
+			var result = await client.Start(default).ConfigureAwait(false);
+			Assert.AreSame(example, result);
+		}
+	}
+}