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Add compiler integration test for @section directive in components
Added SectionDirective_NotAllowed integration test to verify code generation when @section is used in .razor files. The test confirms that @section is no longer recognized as a directive and is instead treated as regular content, preventing compilation errors. Co-authored-by: davidwengier <754264+davidwengier@users.noreply.github.com>
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‎src/Compiler/Microsoft.AspNetCore.Razor.Language/test/IntegrationTests/ComponentCodeGenerationTestBase.cs‎

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CompileToAssembly(generated);
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}
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[IntegrationTestFact, WorkItem("https://github.com/dotnet/razor/issues/11273")]
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public void SectionDirective_NotAllowed()
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{
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// Verify that @section is not recognized in components and produces appropriate code-gen
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// Act
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var generated = CompileToCSharp("""
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@{ var section = "Section"; }
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@section One { <p>Content</p> }
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""");
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// Assert
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AssertDocumentNodeMatchesBaseline(generated.CodeDocument);
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AssertCSharpDocumentMatchesBaseline(generated.CodeDocument);
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CompileToAssembly(generated);
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}
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#endregion
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}

‎src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/SectionDirective_NotAllowed/TestComponent.codegen.cs‎

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// <auto-generated/>
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#pragma warning disable 1591
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namespace Test
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{
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#line default
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using global::System;
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using global::System.Collections.Generic;
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using global::System.Linq;
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using global::System.Threading.Tasks;
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using global::Microsoft.AspNetCore.Components;
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#line default
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#line hidden
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#nullable restore
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public partial class TestComponent : global::Microsoft.AspNetCore.Components.ComponentBase
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#nullable disable
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{
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#pragma warning disable 219
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private void __RazorDirectiveTokenHelpers__() {
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}
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#pragma warning restore 219
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#pragma warning disable 0414
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private static object __o = null;
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#pragma warning restore 0414
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#pragma warning disable 1998
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protected override void BuildRenderTree(global::Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder __builder)
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{
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#nullable restore
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#line 1 "x:\dir\subdir\Test\TestComponent.cshtml"
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var section = "Section";
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#line default
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#line hidden
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#nullable disable
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#nullable restore
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#line 2 "x:\dir\subdir\Test\TestComponent.cshtml"
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__o = section;
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#line default
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#line hidden
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#nullable disable
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}
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#pragma warning restore 1998
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}
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}
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#pragma warning restore 1591

‎src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/SectionDirective_NotAllowed/TestComponent.ir.txt‎

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Document -
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NamespaceDeclaration - - Test
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UsingDirective - (3:1,1 [20] ) - global::System
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UsingDirective - (26:2,1 [40] ) - global::System.Collections.Generic
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UsingDirective - (69:3,1 [25] ) - global::System.Linq
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UsingDirective - (97:4,1 [36] ) - global::System.Threading.Tasks
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UsingDirective - (136:5,1 [45] ) - global::Microsoft.AspNetCore.Components
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ClassDeclaration - - public partial - TestComponent - global::Microsoft.AspNetCore.Components.ComponentBase -
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DesignTimeDirective -
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CSharpCode -
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IntermediateToken - - CSharp - #pragma warning disable 0414
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CSharpCode -
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IntermediateToken - - CSharp - private static object __o = null;
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CSharpCode -
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IntermediateToken - - CSharp - #pragma warning restore 0414
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MethodDeclaration - - protected override - void - BuildRenderTree
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CSharpCode - (2:0,2 [26] x:\dir\subdir\Test\TestComponent.cshtml)
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LazyIntermediateToken - (2:0,2 [26] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - var section = "Section";
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CSharpExpression - (32:1,1 [7] x:\dir\subdir\Test\TestComponent.cshtml)
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LazyIntermediateToken - (32:1,1 [7] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - section
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HtmlContent - (39:1,8 [7] x:\dir\subdir\Test\TestComponent.cshtml)
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LazyIntermediateToken - (39:1,8 [7] x:\dir\subdir\Test\TestComponent.cshtml) - Html - One {
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MarkupElement - (46:1,15 [14] x:\dir\subdir\Test\TestComponent.cshtml) - p
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HtmlContent - (49:1,18 [7] x:\dir\subdir\Test\TestComponent.cshtml)
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LazyIntermediateToken - (49:1,18 [7] x:\dir\subdir\Test\TestComponent.cshtml) - Html - Content
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HtmlContent - (60:1,29 [2] x:\dir\subdir\Test\TestComponent.cshtml)
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LazyIntermediateToken - (60:1,29 [2] x:\dir\subdir\Test\TestComponent.cshtml) - Html - }

‎src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/SectionDirective_NotAllowed/TestComponent.mappings.txt‎

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Source Location: (2:0,2 [26] x:\dir\subdir\Test\TestComponent.cshtml)
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| var section = "Section"; |
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Generated Location: (987:28,2 [26] )
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| var section = "Section"; |
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Source Location: (32:1,1 [7] x:\dir\subdir\Test\TestComponent.cshtml)
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|section|
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Generated Location: (1141:35,6 [7] )
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|section|
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‎src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/SectionDirective_NotAllowed/TestComponent.codegen.cs‎

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// <auto-generated/>
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#pragma warning disable 1591
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namespace Test
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{
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#line default
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using global::System;
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using global::System.Collections.Generic;
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using global::System.Linq;
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using global::System.Threading.Tasks;
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using global::Microsoft.AspNetCore.Components;
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#line default
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#line hidden
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#nullable restore
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public partial class TestComponent : global::Microsoft.AspNetCore.Components.ComponentBase
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#nullable disable
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{
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#pragma warning disable 1998
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protected override void BuildRenderTree(global::Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder __builder)
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{
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#nullable restore
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#line (1,3)-(1,29) "x:\dir\subdir\Test\TestComponent.cshtml"
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var section = "Section";
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#line default
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#line hidden
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#nullable disable
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#nullable restore
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#line (2,2)-(2,9) 24 "x:\dir\subdir\Test\TestComponent.cshtml"
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__builder.AddContent(0, section
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#line default
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#line hidden
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#nullable disable
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);
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__builder.AddContent(1, " One { ");
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__builder.AddMarkupContent(2, "<p>Content</p> }");
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}
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#pragma warning restore 1998
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}
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}
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#pragma warning restore 1591

‎src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/SectionDirective_NotAllowed/TestComponent.ir.txt‎

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Document -
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NamespaceDeclaration - - Test
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UsingDirective - (3:1,1 [20] ) - global::System
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UsingDirective - (26:2,1 [40] ) - global::System.Collections.Generic
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UsingDirective - (69:3,1 [25] ) - global::System.Linq
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UsingDirective - (97:4,1 [36] ) - global::System.Threading.Tasks
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UsingDirective - (136:5,1 [45] ) - global::Microsoft.AspNetCore.Components
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ClassDeclaration - - public partial - TestComponent - global::Microsoft.AspNetCore.Components.ComponentBase -
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MethodDeclaration - - protected override - void - BuildRenderTree
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CSharpCode - (2:0,2 [26] x:\dir\subdir\Test\TestComponent.cshtml)
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LazyIntermediateToken - (2:0,2 [26] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - var section = "Section";
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CSharpExpression - (32:1,1 [7] x:\dir\subdir\Test\TestComponent.cshtml)
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LazyIntermediateToken - (32:1,1 [7] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - section
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HtmlContent - (39:1,8 [7] x:\dir\subdir\Test\TestComponent.cshtml)
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LazyIntermediateToken - (39:1,8 [7] x:\dir\subdir\Test\TestComponent.cshtml) - Html - One {
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MarkupBlock - - <p>Content</p> }

‎src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/SectionDirective_NotAllowed/TestComponent.mappings.txt‎

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Source Location: (2:0,2 [26] x:\dir\subdir\Test\TestComponent.cshtml)
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| var section = "Section"; |
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Generated Location: (735:21,0 [26] )
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| var section = "Section"; |
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Source Location: (32:1,1 [7] x:\dir\subdir\Test\TestComponent.cshtml)
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|section|
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Generated Location: (922:29,24 [7] )
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|section|
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