RazorSdk - Attribute code generation fixes

* Allow the type name for ProvideApplicationPartFactoryAttribute to be specified.

* Generate ReleatedAssemblyAttribute in class library projects

src/Microsoft.AspNetCore.Mvc.Razor.Extensions/build/netstandard2.0/Microsoft.AspNetCore.Mvc.Razor.Extensions.props

@@ -11,6 +11,12 @@
     -->
     <RazorDefaultConfiguration Condition="'$(RazorDefaultConfiguration)'==''">MVC-2.1</RazorDefaultConfiguration>
 
+    <!--
+      Determines the load behavior for Razor compiled views in an Mvc application. By default, the compiled assembly is initialized as an Mvc application part.
+      This results in compiled views being discovered and routes for compiled Razor Pages being set up. Setting this value to false, disables this behavior.
+    -->
+    <EnableDefaultCompiledViewAssemblyLoadBehavior Condition="'$(EnableDefaultCompiledViewAssemblyLoadBehavior)' == ''">true</EnableDefaultCompiledViewAssemblyLoadBehavior>
+
     <!-- Override for testing. This path is only correct inside a nuget package. -->
     <_MvcExtensionAssemblyPath Condition="'$(_MvcExtensionAssemblyPath)'==''">$(MSBuildThisFileDirectory)..\..\lib\netstandard2.0\Microsoft.AspNetCore.Mvc.Razor.Extensions.dll</_MvcExtensionAssemblyPath>
   </PropertyGroup>
@@ -32,4 +38,4 @@
       <AssemblyFilePath>$(_MvcExtensionAssemblyPath)</AssemblyFilePath>
     </RazorExtension>
   </ItemGroup>
-</Project>
+</Project>

src/Microsoft.AspNetCore.Mvc.Razor.Extensions/build/netstandard2.0/Microsoft.AspNetCore.Mvc.Razor.Extensions.targets

@@ -4,7 +4,9 @@
     <!--
       MVC will generally want to add support for runtime compilation, but only for applications. 
     -->
-    <GenerateRazorAssemblyInfo Condition="'$(GenerateRazorAssemblyInfo)'=='' and '$(OutputType)'=='Exe'">true</GenerateRazorAssemblyInfo>
+    <GenerateRazorAssemblyInfo Condition="'$(GenerateRazorAssemblyInfo)'==''">true</GenerateRazorAssemblyInfo>
+
+    <GenerateRazorHostingAssemblyInfo Condition="'$(GenerateRazorHostingAssemblyInfo)'=='' AND '$(OutputType)'=='exe'">$(GenerateRazorAssemblyInfo)</GenerateRazorHostingAssemblyInfo>
 
     <!--
       Use the suffix .Views when producing compiled view assemblies. This matches the requirements for Mvc's ViewsFeatureProvider.
@@ -12,15 +14,21 @@
     <RazorTargetNameSuffix Condition="'$(RazorTargetNameSuffix)'==''">.Views</RazorTargetNameSuffix>
   </PropertyGroup>
 
+  <PropertyGroup Condition="'$(ProvideApplicationPartFactoryAttributeTypeName)' == ''">
+    <ProvideApplicationPartFactoryAttributeTypeName Condition="'$(EnableDefaultCompiledViewAssemblyLoadBehavior)'=='false'">Microsoft.AspNetCore.Mvc.ApplicationParts.NullApplicationPartFactory, Microsoft.AspNetCore.Mvc.Core</ProvideApplicationPartFactoryAttributeTypeName>
+
+    <ProvideApplicationPartFactoryAttributeTypeName Condition="'$(EnableDefaultCompiledViewAssemblyLoadBehavior)'=='true'">Microsoft.AspNetCore.Mvc.ApplicationParts.CompiledRazorAssemblyApplicationPartFactory, Microsoft.AspNetCore.Mvc.Razor</ProvideApplicationPartFactoryAttributeTypeName>
+  </PropertyGroup>
+
   <ItemGroup Condition="'$(GenerateRazorAssemblyInfo)'=='true' AND '$(ResolvedRazorCompileToolset)'=='RazorSdk' AND ('$(RazorCompileOnBuild)' == 'true' OR '$(RazorCompileOnPublish)' == 'true')">
     <AssemblyAttribute Include="Microsoft.AspNetCore.Mvc.ApplicationParts.RelatedAssemblyAttribute">
       <_Parameter1>$(RazorTargetName)</_Parameter1>
     </AssemblyAttribute>
   </ItemGroup>
 
-  <ItemGroup>
+  <ItemGroup Condition="'$(ProvideApplicationPartFactoryAttributeTypeName)'!=''">
     <RazorAssemblyAttribute Include="Microsoft.AspNetCore.Mvc.ApplicationParts.ProvideApplicationPartFactoryAttribute">
-      <_Parameter1>Microsoft.AspNetCore.Mvc.ApplicationParts.CompiledRazorAssemblyApplicationPartFactory, Microsoft.AspNetCore.Mvc.Razor</_Parameter1>
+      <_Parameter1>$(ProvideApplicationPartFactoryAttributeTypeName)</_Parameter1>
     </RazorAssemblyAttribute>
   </ItemGroup>
 </Project>

src/Microsoft.NET.Sdk.Razor/build/netstandard2.0/Microsoft.NET.Sdk.Razor.GenerateAssemblyInfo.targets

@@ -76,6 +76,9 @@ Copyright (c) .NET Foundation. All rights reserved.
       <RazorAssemblyAttribute Include="System.Reflection.AssemblyProductAttribute" Condition="'$(Product)' != '' and '$(GenerateAssemblyProductAttribute)' == 'true'">
         <_Parameter1>$(Product)</_Parameter1>
       </RazorAssemblyAttribute>
+      <RazorAssemblyAttribute Include="System.Resources.NeutralResourcesLanguageAttribute" Condition="'$(NeutralLanguage)' != '' and '$(GenerateNeutralResourcesLanguageAttribute)' == 'true'">
+        <_Parameter1>$(NeutralLanguage)</_Parameter1>
+      </RazorAssemblyAttribute>
 
       <RazorAssemblyAttribute Include="System.Reflection.AssemblyFileVersionAttribute" Condition="'$(RazorAssemblyFileVersion)' != '' and '$(GenerateAssemblyFileVersionAttribute)' == 'true'">
         <_Parameter1>$(RazorAssemblyFileVersion)</_Parameter1>

src/Microsoft.NET.Sdk.Razor/build/netstandard2.0/Sdk.Razor.CurrentVersion.targets

@@ -241,13 +241,13 @@ Copyright (c) .NET Foundation. All rights reserved.
     This allows the project file to act as the source of truth for the applicable Razor configuration regardless 
     of how Razor is used.
 
-    The SDK expects configurations that use runtime compilation to set $(GenerateRazorAssemblyInfo) to true,
+    The SDK expects configurations that use runtime compilation to set $(GenerateRazorHostingAssemblyInfo) to true,
     it will be unset by default.
   -->
   <Target 
     Name="RazorGetAssemblyAttributes"
     AfterTargets="GetAssemblyAttributes"
-    Condition="'$(GenerateRazorAssemblyInfo)'=='true' and '$(RazorDefaultConfiguration)'!=''"
+    Condition="'$(GenerateRazorHostingAssemblyInfo)'=='true' and '$(RazorDefaultConfiguration)'!=''"
     DependsOnTargets="ResolveRazorConfiguration">
     <ItemGroup>
       <AssemblyAttribute Include="Microsoft.AspNetCore.Razor.Hosting.RazorLanguageVersionAttribute">

test/Microsoft.AspNetCore.Razor.Design.Test/IntegrationTests/BuildIntegrationTest.cs

@@ -367,6 +367,32 @@ namespace Microsoft.AspNetCore.Razor.Design.IntegrationTests
             Assert.FileContains(result, razorAssemblyInfoPath, "[assembly: Microsoft.AspNetCore.Mvc.ApplicationParts.ProvideApplicationPartFactoryAttribute(\"Microsoft.AspNetCore.Mvc.ApplicationParts.CompiledRazorAssemblyApplicationPartFac\"");
         }
 
+        [Fact]
+        [InitializeTestProject("ClassLibrary")]
+        public async Task Build_UsesSpecifiedApplicationPartFactoryTypeName()
+        {
+            var razorAssemblyInfo = Path.Combine(IntermediateOutputPath, "ClassLibrary.RazorAssemblyInfo.cs");
+            var result = await DotnetMSBuild("Build", "/p:ProvideApplicationPartFactoryAttributeTypeName=CustomFactory");
+
+            Assert.BuildPassed(result);
+
+            Assert.FileExists(result, razorAssemblyInfo);
+            Assert.FileContains(result, razorAssemblyInfo, "[assembly: Microsoft.AspNetCore.Mvc.ApplicationParts.ProvideApplicationPartFactoryAttribute(\"CustomFactory\"");
+        }
+
+        [Fact]
+        [InitializeTestProject("ClassLibrary")]
+        public async Task Build_UsesNullFactory_IfEnableDefaultCompiledViewAssemblyLoadBehaviorIsSetToFalse()
+        {
+            var razorAssemblyInfo = Path.Combine(IntermediateOutputPath, "ClassLibrary.RazorAssemblyInfo.cs");
+            var result = await DotnetMSBuild("Build", "/p:EnableDefaultCompiledViewAssemblyLoadBehavior=false");
+
+            Assert.BuildPassed(result);
+
+            Assert.FileExists(result, razorAssemblyInfo);
+            Assert.FileContains(result, razorAssemblyInfo, "[assembly: Microsoft.AspNetCore.Mvc.ApplicationParts.ProvideApplicationPartFactoryAttribute(\"Microsoft.AspNetCore.Mvc.ApplicationParts.NullApplicationPartFactory");
+        }
+
         [Fact]
         [InitializeTestProject("SimpleMvc")]
         public async Task Build_DoesNotAddRelatedAssemblyPart_IfToolSetIsNotRazorSdk()
@@ -412,6 +438,50 @@ namespace Microsoft.AspNetCore.Razor.Design.IntegrationTests
             Assert.FileDoesNotExist(result, IntermediateOutputPath, "SimpleMvc.RazorAssemblyInfo.cs");
         }
 
+        [Fact]
+        [InitializeTestProject("SimpleMvc")]
+        public async Task Build_WithGenerateRazorHostingAssemblyInfoFalse_DoesNotGenerateHostingAttributes()
+        {
+            var assemblyInfo = Path.Combine(IntermediateOutputPath, "SimpleMvc.AssemblyInfo.cs");
+            var result = await DotnetMSBuild("Build", "/p:GenerateRazorHostingAssemblyInfo=false");
+
+            Assert.BuildPassed(result);
+
+            Assert.FileExists(result, assemblyInfo);
+            Assert.FileDoesNotContain(result, assemblyInfo, "Microsoft.AspNetCore.Razor.Hosting.RazorLanguageVersionAttribute");
+            Assert.FileDoesNotContain(result, assemblyInfo, "Microsoft.AspNetCore.Razor.Hosting.RazorConfigurationNameAttribute");
+            Assert.FileDoesNotContain(result, assemblyInfo, "Microsoft.AspNetCore.Razor.Hosting.RazorExtensionAssemblyNameAttribute");
+        }
+
+        [Fact]
+        [InitializeTestProject("ClassLibrary")]
+        public async Task Build_DoesNotGenerateHostingAttributes_InClassLibraryProjects()
+        {
+            var assemblyInfo = Path.Combine(IntermediateOutputPath, "ClassLibrary.AssemblyInfo.cs");
+            var result = await DotnetMSBuild("Build");
+
+            Assert.BuildPassed(result);
+
+            Assert.FileExists(result, assemblyInfo);
+            Assert.FileDoesNotContain(result, assemblyInfo, "Microsoft.AspNetCore.Razor.Hosting.RazorLanguageVersionAttribute");
+            Assert.FileDoesNotContain(result, assemblyInfo, "Microsoft.AspNetCore.Razor.Hosting.RazorConfigurationNameAttribute");
+            Assert.FileDoesNotContain(result, assemblyInfo, "Microsoft.AspNetCore.Razor.Hosting.RazorExtensionAssemblyNameAttribute");
+        }
+
+        [Fact]
+        [InitializeTestProject("SimpleMvc")]
+        public async Task Build_GeneratesHostingAttributesByDefault()
+        {
+            var assemblyInfo = Path.Combine(IntermediateOutputPath, "SimpleMvc.AssemblyInfo.cs");
+            var result = await DotnetMSBuild("Build", "/p:GenerateRazorHostingAssemblyInfo=false");
+
+            Assert.BuildPassed(result);
+
+            Assert.FileExists(result, assemblyInfo);
+            Assert.FileDoesNotContain(result, assemblyInfo, "Microsoft.AspNetCore.Razor.Hosting.RazorLanguageVersionAttribute(\"2.1\")");
+            Assert.FileDoesNotContain(result, assemblyInfo, "Microsoft.AspNetCore.Razor.Hosting.RazorConfigurationNameAttribute(\"MVC-2-1\")");
+        }
+
         private static DependencyContext ReadDependencyContext(string depsFilePath)
         {
             var reader = new DependencyContextJsonReader();