public void AddContextAccessorIsScoped()
{
// Arrange
var collection = new ServiceCollection();
// Act
collection.AddContextAccessor();
// Assert
var descriptor = Assert.Single(collection);
Assert.Equal(typeof(IContextAccessor <>), descriptor.ServiceType);
Assert.Null(descriptor.ImplementationInstance);
Assert.Equal(LifecycleKind.Scoped, descriptor.Lifecycle);
}