TestDependencyScope.cs

public static class TestDependencyScope
{
    private static IContainer _currentNestedContainer;

    public static void Begin()
    {
        if (_currentNestedContainer != null)
            throw new Exception("Cannot begin test dependency scope. Another dependency scope is still in effect.");

        _currentNestedContainer = IoC.Container.GetNestedContainer();
    }

    public static IContainer CurrentNestedContainer
    {
        get
        {
            if (_currentNestedContainer == null)
                throw new Exception($"Cannot access the {nameof(CurrentNestedContainer)}. There is no dependency scope in effect.");

            return _currentNestedContainer;
        }
    }

    public static void End()
    {
        if (_currentNestedContainer == null)
            throw new Exception("Cannot end test dependency scope. There is no dependency scope in effect.");

        _currentNestedContainer.Dispose();
        _currentNestedContainer = null;
    }
}