Make launchSettings.json a content item that does not get copied to b… (dotnet/aspnetcore-tooling#928)

* Make launchSettings.json a content item that does not get copied to build or publish directory

Fixes https://github.com/aspnet/AspNetCore/issues/12841

\n\nCommit migrated from d0dc8140e2

src/Razor/Microsoft.NET.Sdk.Razor/src/Sdk/Sdk.Razor.StaticAssets.ProjectSystem.props

@@ -23,7 +23,6 @@ Copyright (c) .NET Foundation. All rights reserved.
     <DefaultItemExcludes>$(DefaultItemExcludes);**\jspm_packages\**;jspm_packages\**</DefaultItemExcludes>
     <DefaultItemExcludes>$(DefaultItemExcludes);**\bower_components\**;bower_components\**</DefaultItemExcludes>
     <DefaultWebContentItemExcludes>$(DefaultWebContentItemExcludes);wwwroot\**</DefaultWebContentItemExcludes>
-    <DefaultWebContentItemExcludes>$(DefaultWebContentItemExcludes);**\launchSettings.json</DefaultWebContentItemExcludes>
   </PropertyGroup>
 
   <ItemGroup Condition="'$(EnableDefaultItems)' == 'true' And '$(EnableDefaultContentItems)' == 'true' ">
@@ -33,13 +32,13 @@ Copyright (c) .NET Foundation. All rights reserved.
     <Content Include="**\*.json" ExcludeFromSingleFile="true" CopyToOutputDirectory="PreserveNewest" CopyToPublishDirectory="PreserveNewest" Exclude="$(DefaultItemExcludes);$(DefaultExcludesInProjectFolder);$(DefaultWebContentItemExcludes)" />
 
     <!-- Set CopyToPublishDirectory to Never for items under AppDesignerFolder ("Properties", by default) to avoid publishing launchSettings.json -->
-    <Content Update="$(AppDesignerFolder)\**" CopyToPublishDirectory="Never" Condition="'$(AppDesignerFolder)' != ''"/>   
+    <Content Update="$(AppDesignerFolder)\**" CopyToPublishDirectory="Never" Condition="'$(AppDesignerFolder)' != ''"/>
 
     <!-- Remove Content items from other item types (in a way that CPS understands) -->
     <None Remove="wwwroot\**;**\*.json;**\*.config" />
     <Compile Remove="wwwroot\**" />
     <EmbeddedResource Remove="wwwroot\**" />
-    
+
     <!-- Keep track of the default content items for later to distinguish them from newly generated content items -->
     <!-- It's important to keep this here so that it works well with the Web SDK -->
     <_ContentIncludedByDefault Include="@(Content)" />

src/Razor/Microsoft.NET.Sdk.Razor/test/IntegrationTests/BuildIntrospectionTest.cs

@@ -194,5 +194,18 @@ namespace Microsoft.AspNetCore.Razor.Design.IntegrationTests
             Assert.BuildPassed(result);
             Assert.BuildOutputContainsLine(result, "UpToDateReloadFileTypes: ;.cs;.razor;.resx;");
         }
+
+        [Fact]
+        [InitializeTestProject("SimpleMvc")]
+        public async Task IntrospectJsonContentFiles()
+        {
+            var result = await DotnetMSBuild("_IntrospectContentItems");
+
+            Assert.BuildPassed(result);
+            var launchSettingsPath = Path.Combine("Properties", "launchSettings.json");
+            Assert.BuildOutputContainsLine(result, $"Content: {launchSettingsPath} CopyToOutputDirectory=PreserveNewest CopyToPublishDirectory=Never ExcludeFromSingleFile=true");
+            Assert.BuildOutputContainsLine(result, "Content: appsettings.json CopyToOutputDirectory=PreserveNewest CopyToPublishDirectory=PreserveNewest ExcludeFromSingleFile=true");
+            Assert.BuildOutputContainsLine(result, "Content: appsettings.Development.json CopyToOutputDirectory=PreserveNewest CopyToPublishDirectory=PreserveNewest ExcludeFromSingleFile=true");
+        }
     }
 }

src/Razor/Microsoft.NET.Sdk.Razor/test/IntegrationTests/PublishIntegrationTest.cs

@@ -51,7 +51,6 @@ namespace Microsoft.AspNetCore.Razor.Design.IntegrationTests
             Assert.FileExists(result, OutputPath, "SimpleMvc.Views.pdb");
             Assert.FileExists(result, OutputPath, "appsettings.json");
             Assert.FileExists(result, OutputPath, "appsettings.Development.json");
-            Assert.FileDoesNotExist(result, OutputPath, Path.Combine("Properties", "launchSettings.json"));
 
             Assert.FileExists(result, PublishOutputPath, "SimpleMvc.dll");
             Assert.FileExists(result, PublishOutputPath, "SimpleMvc.pdb");

src/Razor/test/testassets/RazorTest.Introspection.targets

@@ -42,4 +42,8 @@
   <Target Name="_IntrospectUpToDateReloadFileTypes">
     <Message Text="UpToDateReloadFileTypes: $(UpToDateReloadFileTypes)" Importance="High" />
   </Target>
+
+  <Target Name="_IntrospectContentItems">
+    <Message Text="Content: %(Content.Identity) CopyToOutputDirectory=%(Content.CopyToOutputDirectory) CopyToPublishDirectory=%(Content.CopyToPublishDirectory) ExcludeFromSingleFile=%(Content.ExcludeFromSingleFile)" Importance="High" />
+  </Target>
 </Project>