[Fact]
        public async Task InvalidRegexOptions()
        {
            string test = @"using System.Text.RegularExpressions;

public class A
{
    public partial class B
    {
        public class C
        {
            public partial class D
            {
                public void Foo()
                {
                    Regex regex = [|new Regex(""pattern"", (RegexOptions)0x0800)|];
                }
            }
        }
    }
}
";
            string fixedSource = @"using System.Text.RegularExpressions;

public partial class A
{
    public partial class B
    {
        public partial class C
        {
            public partial class D
            {
                public void Foo()
                {
                    Regex regex = MyRegex();
                }

                [RegexGenerator(""pattern"", (RegexOptions)2048)]
                private static partial Regex MyRegex();
            }
        }
    }
}
";

            await VerifyCS.VerifyCodeFixAsync(test, fixedSource);
        }

        [Fact]
        public async Task InvalidRegexOptions_Negative()
        {
            string test = @"using System.Text.RegularExpressions;

public class A
{
    public partial class B
    {
        public class C
        {
            public partial class D
            {
                public void Foo()
                {
                    Regex regex = [|new Regex(""pattern"", (RegexOptions)(-10000))|];
                }
            }
        }
    }
}
";
            string fixedSource = @"using System.Text.RegularExpressions;

public partial class A
{
    public partial class B
    {
        public partial class C
        {
            public partial class D
            {
                public void Foo()
                {
                    Regex regex = MyRegex();
                }

                [RegexGenerator(""pattern"", (RegexOptions)(-10000))]
                private static partial Regex MyRegex();
            }
        }
    }
}
";
            await new VerifyCS.Test(null, usePreviewLanguageVersion: true, 1)
            {
                TestCode = test,
                FixedCode = fixedSource,
                CodeActionValidationMode = CodeActionValidationMode.None,
            }.RunAsync();
        }