add patch tests and run tests on build (so fail build if tests fail)

QSBTests/PatchTests.cs

@@ -0,0 +1,41 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using QSB.Patches;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+
+namespace QSBTests
+{
+	[TestClass]
+	public class PatchTests
+	{
+		[TestMethod]
+		public void CheckUnreferencedPatches()
+		{
+			var qsbAssembly = Assembly.Load("QSB");
+			var allPatchTypes = qsbAssembly
+				.GetTypes()
+				.Where(x => typeof(QSBPatch).IsAssignableFrom(x) && !x.IsInterface && !x.IsAbstract);
+
+			QSBPatchManager.Init();
+			var patchInstances = (List<QSBPatch>)typeof(QSBPatchManager)
+				.GetField("_patchList", BindingFlags.NonPublic | BindingFlags.Static)
+				.GetValue(typeof(QSBPatchManager));
+
+			var failedTypes = new List<Type>();
+			foreach (var type in allPatchTypes)
+			{
+				if (!patchInstances.Any(x => x.GetType() == type))
+				{
+					failedTypes.Add(type);
+				}
+			}
+
+			if (failedTypes.Count > 0)
+			{
+				Assert.Fail(string.Join(", ", failedTypes.Select(x => x.Name)));
+			}
+		}
+	}
+}

QSBTests/QSBTests.csproj

@@ -50,6 +50,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="EventTests.cs" />
+    <Compile Include="PatchTests.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="UtilityTests.cs" />
   </ItemGroup>
@@ -72,4 +73,7 @@
     <Error Condition="!Exists('..\packages\MSTest.TestAdapter.1.3.2\build\net45\MSTest.TestAdapter.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\MSTest.TestAdapter.1.3.2\build\net45\MSTest.TestAdapter.targets'))" />
   </Target>
   <Import Project="..\packages\MSTest.TestAdapter.1.3.2\build\net45\MSTest.TestAdapter.targets" Condition="Exists('..\packages\MSTest.TestAdapter.1.3.2\build\net45\MSTest.TestAdapter.targets')" />
+  <PropertyGroup>
+    <PostBuildEvent>dotnet test "$(SolutionDir)\QSBTests\$(OutDir)\QSBTests.dll"</PostBuildEvent>
+  </PropertyGroup>
 </Project>