diff --git a/RhSolutions.Tests/CanDoMagic.cs b/RhSolutions.Tests/CanDoMagic.cs
new file mode 100644
index 0000000..7988724
--- /dev/null
+++ b/RhSolutions.Tests/CanDoMagic.cs
@@ -0,0 +1,44 @@
+using Microsoft.Extensions.DependencyInjection;
+using RhSolutions.AddIn;
+using System.IO;
+
+namespace RhSolutions.Tests;
+
+[ExcelTestSettings(OutOfProcess = true)]
+public class CanDoMagic : IDisposable
+{
+    private RhSolutionsAddIn _addIn;
+    private ReaderFactory _readerFactory;
+    private IReader _reader;
+
+    public CanDoMagic()
+    {
+        _addIn = new();
+        _addIn.AutoOpen();
+        _readerFactory = RhSolutionsAddIn.ServiceProvider.GetRequiredService<ReaderFactory>();
+        _reader = _readerFactory.GetReader("Magic");
+    }
+
+    [ExcelFact(Workbook = @"..\..\..\TestWorkbooks\TestSpecificationMagic.xlsx")]
+    public void CanWrite()
+    {
+        Worksheet sourceSheet = Util.Workbook.Worksheets[1];
+        RhSolutionsAddIn.Configuration.SetPriceListPath(Path.GetFullPath(@"..\..\..\TestWorkbooks\TargetSpecificationMagic.xlsx"));
+        var products = _reader.ReadProducts(new[] { sourceSheet });
+        var _writer = new ExcelWriter(Util.Application, RhSolutionsAddIn.Configuration);
+        _writer.WriteProducts(products);
+        Worksheet targetSheet = Util.Application.ActiveWindow.ActiveSheet;
+        var targetProducts = _reader.ReadProducts(new[] { targetSheet });
+
+        Assert.Equal("TestSpecificationMagic", products.First().Item1);
+        Assert.Equal("TargetSpecificationMagic", targetProducts.First().Item1);
+        Assert.Equal(products.First().Item2.Count(), targetProducts.First().Item2.Count());
+        Assert.Equal(products.First().Item2.Values.Sum(), targetProducts.First().Item2.Values.Sum());
+    }
+
+    public void Dispose()
+    {
+        _addIn.AutoClose();
+        Util.Application.ActiveWindow.Close(SaveChanges: false);
+    }
+}
diff --git a/RhSolutions.Tests/TestWorkbooks/TargetSpecificationMagic.xlsx b/RhSolutions.Tests/TestWorkbooks/TargetSpecificationMagic.xlsx
new file mode 100644
index 0000000..e7bae5f
Binary files /dev/null and b/RhSolutions.Tests/TestWorkbooks/TargetSpecificationMagic.xlsx differ
diff --git a/RhSolutions.Tests/TestWorkbooks/TestSpecificationMagic.xlsx b/RhSolutions.Tests/TestWorkbooks/TestSpecificationMagic.xlsx
new file mode 100644
index 0000000..d268c3e
Binary files /dev/null and b/RhSolutions.Tests/TestWorkbooks/TestSpecificationMagic.xlsx differ