public void SetCurrent()
{
var synchronizationContext1 = new SynchronizationContext();
var synchronizationContext2 = new SynchronizationContext();
Assert.IsNull(SynchronizationContext.Current);
using (synchronizationContext1.AsCurrent())
{
Assert.AreSame(synchronizationContext1, SynchronizationContext.Current);
using (synchronizationContext2.AsCurrent())
{
Assert.AreSame(synchronizationContext2, SynchronizationContext.Current);
}
Assert.AreSame(synchronizationContext1, SynchronizationContext.Current);
}
Assert.IsNull(SynchronizationContext.Current);
}