jdescopingtool/NEW/tests/JdeScoping.ExcelIO.Tests/HeaderFormatterTests.cs

using JdeScoping.ExcelIO.Formatting;
using JdeScoping.ExcelIO.Tests.Fixtures;
using NPOI.XSSF.UserModel;
using Shouldly;
using Xunit;

namespace JdeScoping.ExcelIO.Tests;

public class HeaderFormatterTests
{
    [Fact]
    public void ApplyHeaderFormat_Cell_AppliesCorrectStyling()
    {
        using var workbook = new XSSFWorkbook();
        var worksheet = workbook.CreateSheet("Test");
        var row = worksheet.CreateRow(0);
        var cell = row.CreateCell(0);

        HeaderFormatter.ApplyHeaderFormat(cell, "Test Header");

        ExcelTestHelpers.GetCellText(worksheet, 1, 1).ShouldBe("Test Header");
        cell.CellStyle.GetFont(workbook).IsBold.ShouldBeTrue();
        cell.CellStyle.Alignment.ShouldBe(NPOI.SS.UserModel.HorizontalAlignment.Center);
        ExcelTestHelpers.GetFillForegroundRgb(cell).ShouldBe([0xDC, 0xDC, 0xDC]);
    }

    [Fact]
    public void ApplyHeaderFormat_Cell_WithoutText_AppliesOnlyStyling()
    {
        using var workbook = new XSSFWorkbook();
        var worksheet = workbook.CreateSheet("Test");
        var row = worksheet.CreateRow(0);
        var cell = row.CreateCell(0);
        cell.SetCellValue("Original");

        HeaderFormatter.ApplyHeaderFormat(cell);

        ExcelTestHelpers.GetCellText(worksheet, 1, 1).ShouldBe("Original");
        cell.CellStyle.GetFont(workbook).IsBold.ShouldBeTrue();
    }

    [Fact]
    public void ApplyHeaderFormat_Range_AppliesCorrectStyling()
    {
        using var workbook = new XSSFWorkbook();
        var worksheet = workbook.CreateSheet("Test");

        HeaderFormatter.ApplyHeaderFormat(worksheet, 1, 1, 1, 3, "Header", merge: false);

        ExcelTestHelpers.GetCellText(worksheet, 1, 1).ShouldBe("Header");
        for (var col = 1; col <= 3; col++)
        {
            var cell = ExcelTestHelpers.GetCell(worksheet, 1, col)!;
            cell.CellStyle.GetFont(workbook).IsBold.ShouldBeTrue();
            ExcelTestHelpers.GetFillForegroundRgb(cell).ShouldBe([0xDC, 0xDC, 0xDC]);
        }
    }

    [Fact]
    public void ApplyHeaderFormat_Range_WithMerge_MergesCells()
    {
        using var workbook = new XSSFWorkbook();
        var worksheet = workbook.CreateSheet("Test");

        HeaderFormatter.ApplyHeaderFormat(worksheet, 1, 1, 1, 3, "Merged Header", merge: true);

        ExcelTestHelpers.IsMerged(worksheet, 1, 1, 1, 3).ShouldBeTrue();
        ExcelTestHelpers.GetCellText(worksheet, 1, 1).ShouldBe("Merged Header");
    }

    [Fact]
    public void ApplyHeaderFormat_Range_WithoutMerge_DoesNotMergeCells()
    {
        using var workbook = new XSSFWorkbook();
        var worksheet = workbook.CreateSheet("Test");

        HeaderFormatter.ApplyHeaderFormat(worksheet, 1, 1, 1, 3, "Not Merged", merge: false);

        ExcelTestHelpers.IsMerged(worksheet, 1, 1, 1, 3).ShouldBeFalse();
    }
}