include xunit

Solution1/UnitTestProject/TestsCalculatorX.cs

@@ -0,0 +1,82 @@
+using Xunit;
+using System;
+using TestLibrary;
+namespace UnitTestProject
+{
+    public class CalculatorTests
+    {
+        private readonly MyCalculator _calculator;
+
+        public CalculatorTests()
+        {
+            _calculator = new MyCalculator();
+        }
+
+        [Fact]
+        public void Add_SimpleValues_ShouldReturnCorrectSum()
+        {
+            // Arrange
+            int a = 5;
+            int b = 3;
+
+            // Act
+            int result = _calculator.Add(a, b);
+
+            // Assert
+            Assert.Equal(8, result);
+        }
+
+        [Fact]
+        public void Subtract_SimpleValues_ShouldReturnCorrectDifference()
+        {
+            // Arrange
+            int a = 5;
+            int b = 3;
+
+            // Act
+            int result = _calculator.Subtract(a, b);
+
+            // Assert
+            Assert.Equal(2, result);
+        }
+
+        [Fact]
+        public void Multiply_SimpleValues_ShouldReturnCorrectProduct()
+        {
+            // Arrange
+            int a = 5;
+            int b = 3;
+
+            // Act
+            int result = _calculator.Multiply(a, b);
+
+            // Assert
+            Assert.Equal(15, result);
+        }
+
+        [Fact]
+        public void Divide_SimpleValues_ShouldReturnCorrectQuotient()
+        {
+            // Arrange
+            int a = 6;
+            int b = 3;
+
+            // Act
+            double result = _calculator.Divide(a, b);
+
+            // Assert
+            Assert.Equal(2.0, result, 1);
+        }
+
+        [Fact]
+        public void Divide_ByZero_ShouldThrowDivideByZeroException()
+        {
+            // Arrange
+            int a = 6;
+            int b = 0;
+
+            // Act & Assert
+            Assert.Throws<DivideByZeroException>(() => _calculator.Divide(a, b));
+        }
+    }
+}

Solution1/UnitTestProject/UnitTestProject.csproj

@@ -17,6 +17,15 @@
     <PackageReference Include="Selenium.WebDriver.ChromeDriver" Version="125.0.6422.14100" />
     <PackageReference Include="MSTest.TestAdapter" Version="2.2.7" />
     <PackageReference Include="MSTest.TestFramework" Version="2.2.7" />
+    <PackageReference Include="xunit" Version="2.4.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="coverlet.collector" Version="3.1.0">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\TestLibrary\TestLibrary.csproj" />