Learn XUnit null assertion methods including Assert.Null and Assert.NotNull for testing null values in C# unit tests. This XUnit tutorial explains how to test for null references, verify objects are not null, and prevent NullReferenceException in ASP.NET Core applications. Master XUnit null testing for .NET developers with practical examples of Assert.Null to verify nullable types and optional values, Assert.NotNull to ensure objects are initialized, and best practices for null checking in your C# unit tests.
#xunit #csharp #dotnet #unittesting #aspnetcore #assertnull #programming #coding #nullreference
