public void OneInstance()
{
var s1 = GlobalSingleton.Instance();
var s2 = GlobalSingleton.Instance();
Assert.That(s1, Is.EqualTo(s2));
}
public void OneGlobalInstance()
{
GlobalSingleton s1 = null;
GlobalSingleton s2 = null;
var thread1 = new Thread(() => s1 = GlobalSingleton.Instance());
var thread2 = new Thread(() => s2 = GlobalSingleton.Instance());
thread1.Start();
thread2.Start();
thread1.Join();
thread2.Join();
Assert.That(s1, Is.EqualTo(s2));
}