Cleanup warnings

- avoid "CSC warning CS2008: No source files specified." building site extensions
- correct warnings (as errors) about `RenderToStringResult` being obsolete
  - add Microsoft.AspNetCore.SpaServices.Tests to Middleware solution

Author: dougbu

src/Middleware/Middleware.sln

@@ -299,6 +299,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.AspNetCore.Server
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.AspNetCore.SpaServices.Extensions.Tests", "SpaServices.Extensions\test\Microsoft.AspNetCore.SpaServices.Extensions.Tests.csproj", "{D0CB733B-4CE8-4F6C-BBB9-548EA1A96966}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.AspNetCore.SpaServices.Tests", "SpaServices\test\Microsoft.AspNetCore.SpaServices.Tests.csproj", "{8A9C1F6C-3A47-4868-AA95-3EBE0260F5A0}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -1641,6 +1643,18 @@ Global
 		{D0CB733B-4CE8-4F6C-BBB9-548EA1A96966}.Release|x64.Build.0 = Release|Any CPU
 		{D0CB733B-4CE8-4F6C-BBB9-548EA1A96966}.Release|x86.ActiveCfg = Release|Any CPU
 		{D0CB733B-4CE8-4F6C-BBB9-548EA1A96966}.Release|x86.Build.0 = Release|Any CPU
+		{8A9C1F6C-3A47-4868-AA95-3EBE0260F5A0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{8A9C1F6C-3A47-4868-AA95-3EBE0260F5A0}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{8A9C1F6C-3A47-4868-AA95-3EBE0260F5A0}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{8A9C1F6C-3A47-4868-AA95-3EBE0260F5A0}.Debug|x64.Build.0 = Debug|Any CPU
+		{8A9C1F6C-3A47-4868-AA95-3EBE0260F5A0}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{8A9C1F6C-3A47-4868-AA95-3EBE0260F5A0}.Debug|x86.Build.0 = Debug|Any CPU
+		{8A9C1F6C-3A47-4868-AA95-3EBE0260F5A0}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{8A9C1F6C-3A47-4868-AA95-3EBE0260F5A0}.Release|Any CPU.Build.0 = Release|Any CPU
+		{8A9C1F6C-3A47-4868-AA95-3EBE0260F5A0}.Release|x64.ActiveCfg = Release|Any CPU
+		{8A9C1F6C-3A47-4868-AA95-3EBE0260F5A0}.Release|x64.Build.0 = Release|Any CPU
+		{8A9C1F6C-3A47-4868-AA95-3EBE0260F5A0}.Release|x86.ActiveCfg = Release|Any CPU
+		{8A9C1F6C-3A47-4868-AA95-3EBE0260F5A0}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -1770,6 +1784,7 @@ Global
 		{46B4FE62-06A1-4D54-B3E8-D8B4B3560075} = {ACA6DDB9-7592-47CE-A740-D15BF307E9E0}
 		{92E11EBB-759E-4DA8-AB61-A9977D9F97D0} = {ACA6DDB9-7592-47CE-A740-D15BF307E9E0}
 		{D0CB733B-4CE8-4F6C-BBB9-548EA1A96966} = {D6FA4ABE-E685-4EDD-8B06-D8777E76B472}
+		{8A9C1F6C-3A47-4868-AA95-3EBE0260F5A0} = {D6FA4ABE-E685-4EDD-8B06-D8777E76B472}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {83786312-A93B-4BB4-AB06-7C6913A59AFA}

src/Middleware/SpaServices/test/RenderToStringResultTests.cs

@@ -15,7 +15,9 @@ public class RenderToStringResultTest
         public void HandlesNullGlobals()
         {
             // Arrange
+#pragma warning disable CS0618 // Type or member is obsolete
             var renderToStringResult = new RenderToStringResult();
+#pragma warning restore CS0618 // Type or member is obsolete
             renderToStringResult.Globals = null;
 
             // Act
@@ -29,7 +31,9 @@ public void HandlesNullGlobals()
         public void HandlesGlobalsWithMultipleProperties()
         {
             // Arrange
+#pragma warning disable CS0618 // Type or member is obsolete
             var renderToStringResult = new RenderToStringResult();
+#pragma warning restore CS0618 // Type or member is obsolete
             renderToStringResult.Globals = ToJObject(new
             {
                 FirstProperty = "first value",
@@ -49,7 +53,9 @@ public void HandlesGlobalsWithMultipleProperties()
         public void HandlesGlobalsWithCorrectStringEncoding()
         {
             // Arrange
+#pragma warning disable CS0618 // Type or member is obsolete
             var renderToStringResult = new RenderToStringResult();
+#pragma warning restore CS0618 // Type or member is obsolete
             renderToStringResult.Globals = ToJObject(new Dictionary<string, object>
             {
                 { "Va<l'u\"e", "</tag>\"'}\u260E" }

src/SiteExtensions/LoggingBranch/LB.csproj

@@ -31,6 +31,9 @@
     </ProjectReference>
   </ItemGroup>
 
+  <!-- No code in this project to compile. -->
+  <Target Name="Compile" />
+
   <!-- Cannot assume this project and Microsoft.AspNetCore.AzureAppServices.HostingStartup have the same package version. -->
   <Target Name="_GetHostingStartupPackageReference" BeforeTargets="GenerateHostingStartupDeps">
     <!-- This target is defined in eng/targets/Packaging.targets and included in every C# and F# project. -->