feat(io): workbook part-quantity reader and cut-only import coverage

PartQuantityReader parses a Parts worksheet (Part Name / Qty Required) with exact-name matching and strict rejection of invalid, fractional, negative, or duplicate quantities. Cut-only import drops case-insensitive ETCH/SCRIBE mark layers before geometry so bend detection cannot regenerate them. Tests cover both.
2026-09-21 10:05:39 -04:00
parent f34b3c4449
commit 6f38c11383
3 changed files with 218 additions and 0 deletions
@@ -0,0 +1,89 @@
+using ClosedXML.Excel;
+using OpenNest.IO.Bom;
+
+namespace OpenNest.IO.Tests;
+
+public class PartQuantityReaderTests
+{
+    [Fact]
+    public void ReadsExactNamesAndQuantitiesIncludingZeroDemand()
+    {
+        WithWorkbook(
+            sheet =>
+            {
+                sheet.Cell(2, 1).Value = "Part 01";
+                sheet.Cell(2, 2).Value = 58;
+                sheet.Cell(3, 1).Value = "Skeleton";
+                sheet.Cell(3, 2).Value = 0;
+            },
+            path =>
+            {
+                var result = PartQuantityReader.Read(path);
+                Assert.Equal(58, result["Part 01"]);
+                Assert.Equal(0, result["Skeleton"]);
+                Assert.Equal(2, result.Count);
+            }
+        );
+    }
+
+    [Theory]
+    [InlineData("1.5")]
+    [InlineData("-1")]
+    [InlineData("NaN")]
+    [InlineData("")]
+    [InlineData("2147483648")]
+    public void RejectsInvalidQuantityInsteadOfDefaultingOrTruncating(string value)
+    {
+        WithWorkbook(
+            sheet =>
+            {
+                sheet.Cell(2, 1).Value = "Part";
+                sheet.Cell(2, 2).Value = value;
+            },
+            path => Assert.Throws<InvalidDataException>(() => PartQuantityReader.Read(path))
+        );
+    }
+
+    [Theory]
+    [InlineData(true)]
+    [InlineData(false)]
+    public void RejectsDuplicatePartsOrMissingQuantityHeader(bool duplicate)
+    {
+        WithWorkbook(
+            sheet =>
+            {
+                sheet.Cell(2, 1).Value = "Part";
+                sheet.Cell(2, 2).Value = 1;
+                if (duplicate)
+                {
+                    sheet.Cell(3, 1).Value = "Part";
+                    sheet.Cell(3, 2).Value = 2;
+                }
+                else
+                    sheet.Cell(1, 2).Value = "Unrecognized";
+            },
+            path => Assert.Throws<InvalidDataException>(() => PartQuantityReader.Read(path))
+        );
+    }
+
+    private static void WithWorkbook(Action<IXLWorksheet> prepare, Action<string> check)
+    {
+        var path = Path.Combine(Path.GetTempPath(), $"opennest-quantities-{Guid.NewGuid()}.xlsx");
+        try
+        {
+            using (var workbook = new XLWorkbook())
+            {
+                var sheet = workbook.AddWorksheet("Parts");
+                sheet.Cell(1, 1).Value = "Part Name";
+                sheet.Cell(1, 2).Value = "Qty Required";
+                prepare(sheet);
+                workbook.SaveAs(path);
+            }
+            check(path);
+        }
+        finally
+        {
+            File.Delete(path);
+        }
+    }
+}