Run code once before and after ALL tests in xUnit.net

Question

TL;DR - I\'m looking for xUnit\'s equivalent of MSTest\'s AssemblyInitialize (aka the ONE feature it has that I like).

Specifically I\'m looking for it

Answer 1

I use AssemblyFixture (NuGet).

What it does is it provides an IAssemblyFixture interface that is replacing any IClassFixture where you want the object's lifetime to be as the testing assembly.

Example:

public class Singleton { }

public class TestClass1 : IAssemblyFixture
{
  readonly Singletone _Singletone;
  public TestClass1(Singleton singleton)
  {
    _Singleton = singleton;
  }

  [Fact]
  public void Test1()
  {
     //use singleton  
  }
}

public class TestClass2 : IAssemblyFixture
{
  readonly Singletone _Singletone;
  public TestClass2(Singleton singleton)
  {
    //same singleton instance of TestClass1
    _Singleton = singleton;
  }

  [Fact]
  public void Test2()
  {
     //use singleton  
  }
}