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SyntaxNodeExtensions: increase GetBody coverage #8639

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SyntaxNodeExtensions: increase GetBody coverage #8639

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4ded29d
SyntaxNodeExtensions: increase GetBody coverage
antonioaversa Jan 30, 2024
9ebc49d
Fix naming
antonioaversa Jan 30, 2024
827f6e0
Add missing UTs in local functions
antonioaversa Jan 30, 2024
edc5423
Code review 1
antonioaversa Jan 30, 2024
3d1f73a
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antonioaversa Jan 30, 2024
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antonioaversa Jan 30, 2024
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37 changes: 36 additions & 1 deletion analyzers/tests/SonarAnalyzer.Test/Extensions/SyntaxNodeExtensionsTest.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@

using FluentAssertions.Extensions;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.Operations;
using Microsoft.CodeAnalysis.Text;
using SonarAnalyzer.CFG.Roslyn;
Expand Down Expand Up @@ -172,6 +173,40 @@ public void ArrowExpressionBody_WithNotExpectedNode_ReturnsNull()
public void GetDeclarationTypeName_Struct() =>
ExtensionsCS.GetDeclarationTypeName(SyntaxFactory.StructDeclaration("MyStruct")).Should().Be("struct");

[TestMethod]
public void GetBody_FieldDeclaration()
{
ExtensionsCS.GetBody(SyntaxFactory.FieldDeclaration(SyntaxFactory.VariableDeclaration(SyntaxFactory.ParseTypeName("int")))).Should().BeNull();
}

[TestMethod]
public void GetBody_PropertyDeclaration_SingleAccessor()
{
var code = "class AClass { int AProperty { get => 42; } }";
ExtensionsCS.GetBody(CSharpSyntaxTree.ParseText(code).Single<PropertyDeclarationSyntax>()).Should().BeNull();
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ExtensionsCS.GetBody(CSharpSyntaxTree.ParseText(code).Single<T> is repeated very often. Extract a helper

BlockSyntax ParseForBlockSyntax<T>(string code) where T: CSharpSyntaxNode
    => ExtensionsCS.GetBody(CSharpSyntaxTree.ParseText(code).Single<T>());

}

[TestMethod]
public void GetBody_PropertyDeclaration_MultipleAccessors()
{
var code = "class AClass { int AProperty { get => 42; set { } } }";
ExtensionsCS.GetBody(CSharpSyntaxTree.ParseText(code).Single<PropertyDeclarationSyntax>()).Should().BeNull();
}

[TestMethod]
public void GetBody_AccessorDeclaration_ArrowExpression()
{
var code = "class AClass { int AProperty { get => 42; } }";
ExtensionsCS.GetBody(CSharpSyntaxTree.ParseText(code).Single<AccessorDeclarationSyntax>()).Should().BeNull();
}

[TestMethod]
public void GetBody_AccessorDeclaration_BodyBlock()
{
var code = "class AClass { int AProperty { set { } } }";
ExtensionsCS.GetBody(CSharpSyntaxTree.ParseText(code).Single<AccessorDeclarationSyntax>()).Should().NotBeNull();
}
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[TestMethod]
public void CreateCfg_MethodDeclaration_ReturnsCfg_CS()
{
Expand Down Expand Up @@ -230,7 +265,7 @@ public void CreateCfg_FieldInitializerWithoutOperation_ReturnsCfg_CS()
const string code = """
public class Sample
{
private string field = null!; // null! itself doens't have operation, and we can still generate CFG for it from the equals clause
private string field = null!; // null! itself doesn't have operation, and we can still generate CFG for it from the equals clause
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have an operation

}
""";
CreateCfgCS<SyntaxCS.EqualsValueClauseSyntax>(code).Should().NotBeNull();
Expand Down