Initial commit of the ClosedXML library

Establishes the foundational structure, core Excel functionality, and tooling. - Implements base components for cells, ranges, columns, and rows. - Integrates a custom calculation engine with a wide range of Excel functions. - Adds comprehensive support for styling, conditional formatting, data validation, comments, pictures, and charts. - Configures build setup, project metadata (NuGet), and developer guidelines. - Includes editor and Git attributes for consistent code style and line endings.
2026-06-23 11:02:53 -05:00
parent 28bc05cf54
commit 2cd6df6481
1092 changed files with 97270 additions and 408 deletions
@@ -0,0 +1,56 @@
+using ClosedXML.Excel;
+using ClosedXML.Excel.CalcEngine.Exceptions;
+using NUnit.Framework;
+using System;
+using System.Globalization;
+using System.Threading;
+
+namespace ClosedXML_Tests.Excel.CalcEngine
+{
+    [TestFixture]
+    public class CalcEngineExceptionTests
+    {
+        [OneTimeSetUp]
+        public void SetCultureInfo()
+        {
+            Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture("en-US");
+        }
+
+        [Test]
+        public void InvalidCharNumber()
+        {
+            Assert.Throws<CellValueException>(() => XLWorkbook.EvaluateExpr("CHAR(-2)"));
+            Assert.Throws<CellValueException>(() => XLWorkbook.EvaluateExpr("CHAR(270)"));
+        }
+
+        [Test]
+        public void DivisionByZero()
+        {
+            Assert.Throws<DivisionByZeroException>(() => XLWorkbook.EvaluateExpr("0/0"));
+            Assert.Throws<DivisionByZeroException>(() => new XLWorkbook().AddWorksheet().Evaluate("0/0"));
+        }
+
+        [Test]
+        public void InvalidFunction()
+        {
+            Exception ex;
+            ex = Assert.Throws<NameNotRecognizedException>(() => XLWorkbook.EvaluateExpr("XXX(A1:A2)"));
+            Assert.That(ex.Message, Is.EqualTo("The identifier `XXX` was not recognised."));
+
+            var ws = new XLWorkbook().AddWorksheet();
+            ex = Assert.Throws<NameNotRecognizedException>(() => ws.Evaluate("XXX(A1:A2)"));
+            Assert.That(ex.Message, Is.EqualTo("The identifier `XXX` was not recognised."));
+        }
+
+        [Test]
+        public void NestedNameNotRecognizedException()
+        {
+            using var wb = new XLWorkbook();
+            var ws = wb.AddWorksheet();
+            ws.Cell("A1").SetFormulaA1("=XXX");
+            ws.Cell("A2").SetFormulaA1(@"=IFERROR(A1, ""Success"")");
+
+            Assert.AreEqual("Success", ws.Cell("A2").Value);
+        }
+    }
+}