public void TestClassAttribute() { foreach (var root in roots) { NamespaceDeclarationSyntax namespaceDeclarationSyntax = (NamespaceDeclarationSyntax)root.Members[0]; ClassDeclarationSyntax classDeclarationSyntax = (ClassDeclarationSyntax)namespaceDeclarationSyntax.Members[0]; classDeclarationSyntax.AttributeLists.Count.Should().Be(1); AttributeListSyntax attributeArgumentSyntax = classDeclarationSyntax.AttributeLists[0]; attributeArgumentSyntax.ToFullString().Trim().Should().Be("[TestClass]"); } }