public void ShouldReturnSameInstanceWithMultipleCalls()
{
SingletonClass first = SingletonClass.Instance;
SingletonClass second = SingletonClass.Instance;
Assert.AreSame(first, second);
first.SomeValue++;
Assert.AreEqual(first.SomeValue, second.SomeValue);
second.SomeValue++;
Assert.AreEqual(first.SomeValue, second.SomeValue);
first.Dispose();
second.Dispose();
}