Make Razor SDK support refs and views on publish

These are default behaviors for precompilation.

src/Microsoft.AspNetCore.Razor.Design/build/netstandard2.0/Microsoft.AspNetCore.Razor.Design.targets

@@ -31,6 +31,22 @@
     
     <!-- File name (without extension) of the assembly produced by Razor -->
     <RazorTargetName Condition="'$(RazorTargetName)'==''">$(TargetName).PrecompiledViews</RazorTargetName>
+
+    <!-- 
+      Set to true to copy RazorGenerate items to the publish directory (.cshtml) files.
+
+      Typically Razor files are not needed for a published application if they participate in compilation at build-time
+      or publish-time. By default, the Razor SDK will suppress the copying of RazorGenerate items to the publish directory.
+    -->
+    <CopyRazorGenerateFilesToPublishDirectory Condition="'$(CopyRazorGenerateFilesToPublishDirectory)'==''">false</CopyRazorGenerateFilesToPublishDirectory>
+
+    <!-- 
+      Set to true to copy reference assembly items to the publish directory (.cshtml) files.
+
+      Typically reference assemblies are not needed for a published application if Razor compilation occurs at build-time
+      or publish-time. By default, the Razor SDK will suppress the copying of reference assemblies to the publish directory.
+    -->
+    <CopyRefAssembliesToPublishDirectory Condition="'$(CopyRefAssembliesToPublishDirectory)'==''">false</CopyRefAssembliesToPublishDirectory>
   </PropertyGroup>
 
   <ItemGroup>
@@ -314,14 +330,16 @@
   </Target>
 
   <!--
-    Called after ComputeFilesToPublish - this target is called when publishing the project to get a list of
+    Called after ComputeFilesToPublish and ComputeRefAssembliesToPublish but before CopyFilesToPublishDirectory - this target is called when 
-    files to the output directory.
+    publishing the project to get a list of files to the output directory.
   -->
   <Target
     Name="_RazorComputeFilesToPublish"
-    AfterTargets="ComputeFilesToPublish">
+    AfterTargets="ComputeRefAssembliesToPublish"
+    Condition="'@(RazorGenerate)'!='' and ('$(RazorCompileOnBuild)'=='true' or '$(RazorCompileOnPublish)'=='true')">
 
-    <ItemGroup Condition="'@(RazorGenerate)'!='' and ('$(RazorCompileOnBuild)'=='true' or '$(RazorCompileOnPublish)'=='true')">
+    <!-- If we generated an assembly/pdb then include those -->
+    <ItemGroup>
       <ResolvedFileToPublish Include="@(RazorIntermediateAssembly)" Condition="'$(CopyBuildOutputToPublishDirectory)'=='true'">
         <RelativePath>@(RazorIntermediateAssembly->'%(Filename)%(Extension)')</RelativePath>
       </ResolvedFileToPublish>
@@ -330,6 +348,24 @@
       </ResolvedFileToPublish>
     </ItemGroup>
 
+    <!--
+      RazorGenerate items are usually populated from the '.cshtml' files in @(Content). These are published by default
+      so all we need to do is exclude them. 
+    -->
+    <ItemGroup Condition="'$(CopyRazorGenerateFilesToPublishDirectory)'=='false'">
+      <ResolvedFileToPublish Remove="%(RazorGenerate.FullPath)"/>
+    </ItemGroup>
+
+    <!--
+      The ref assemblies are published whenever PreserveCompilationContext is true, which we expect to be true for
+      most usages of Razor. There's no setting that excludes just the ref assemblies, so we do it ourselves. 
+    -->
+    <ItemGroup Condition="'$(CopyRefAssembliesToPublishDirectory)'=='false'">
+      <ResolvedFileToPublish 
+        Remove="%(ResolvedFileToPublish.Identity)"
+        Condition="'%(ResolvedFileToPublish.RelativePath)'=='$(RefAssembliesFolderName)\%(Filename)%(Extension)'"/>
+    </ItemGroup>
+
   </Target>
 
   <!--

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

@@ -26,6 +26,10 @@ namespace Microsoft.AspNetCore.Razor.Design.IntegrationTests
             Assert.FileExists(result, PublishOutputPath, "SimpleMvc.pdb");
             Assert.FileExists(result, PublishOutputPath, "SimpleMvc.PrecompiledViews.dll");
             Assert.FileExists(result, PublishOutputPath, "SimpleMvc.PrecompiledViews.pdb");
+
+            // By default refs and .cshtml files will not be copied on publish
+            Assert.FileCountEquals(result, 0, Path.Combine(PublishOutputPath, "refs"), "*.dll");
+            Assert.FileCountEquals(result, 0, Path.Combine(PublishOutputPath, "Views"), "*.cshtml");
         }
 
         [Fact]
@@ -43,6 +47,10 @@ namespace Microsoft.AspNetCore.Razor.Design.IntegrationTests
             Assert.FileExists(result, PublishOutputPath, "SimpleMvc.pdb");
             Assert.FileExists(result, PublishOutputPath, "SimpleMvc.PrecompiledViews.dll");
             Assert.FileExists(result, PublishOutputPath, "SimpleMvc.PrecompiledViews.pdb");
+
+            // By default refs and .cshtml files will not be copied on publish
+            Assert.FileCountEquals(result, 0, Path.Combine(PublishOutputPath, "refs"), "*.dll");
+            Assert.FileCountEquals(result, 0, Path.Combine(PublishOutputPath, "Views"), "*.cshtml");
         }
 
         [Fact]
@@ -107,6 +115,27 @@ namespace Microsoft.AspNetCore.Razor.Design.IntegrationTests
             Assert.FileDoesNotExist(result, PublishOutputPath, "SimpleMvc.PrecompiledViews.pdb");
         }
 
+        [Fact]
+        [InitializeTestProject("SimpleMvc")]
+        public async Task Publish_IncludeCshtmlAndRefAssemblies_CopiesFiles()
+        {
+            var result = await DotnetMSBuild("Publish", "/p:RazorCompileOnPublish=true /p:CopyRazorGenerateFilesToPublishDirectory=true /p:CopyRefAssembliesToPublishDirectory=true");
+
+            Assert.BuildPassed(result);
+
+            Assert.FileDoesNotExist(result, OutputPath, "SimpleMvc.PrecompiledViews.dll");
+            Assert.FileDoesNotExist(result, OutputPath, "SimpleMvc.PrecompiledViews.pdb");
+
+            Assert.FileExists(result, PublishOutputPath, "SimpleMvc.dll");
+            Assert.FileExists(result, PublishOutputPath, "SimpleMvc.pdb");
+            Assert.FileExists(result, PublishOutputPath, "SimpleMvc.PrecompiledViews.dll");
+            Assert.FileExists(result, PublishOutputPath, "SimpleMvc.PrecompiledViews.pdb");
+
+            // By default refs and .cshtml files will not be copied on publish
+            Assert.FileExists(result, PublishOutputPath, "refs", "mscorlib.dll");
+            Assert.FileCountEquals(result, 8, Path.Combine(PublishOutputPath, "Views"), "*.cshtml");
+        }
+
         [Fact]
         [InitializeTestProject("AppWithP2PReference", "ClassLibrary")]
         public async Task Publish_WithP2P_AndRazorCompileOnBuild_CopiesRazorAssembly()