using System.IO.Compression;
using Xunit;

namespace Shared.Excel.Tests;

public sealed class XlsxSafetyInspectorTests
{
    [Fact]
    public void Rejects_zip_without_xlsx_structure()
    {
        using var stream = new MemoryStream();
        using (var zip = new ZipArchive(stream, ZipArchiveMode.Create, true))
        {
            var entry = zip.CreateEntry("hello.txt");
            using var writer = new StreamWriter(entry.Open());
            writer.Write("not an xlsx");
        }
        Assert.Throws<InvalidDataException>(() => new XlsxSafetyInspector().EnsureSafe(stream.ToArray()));
    }
}