public void H_Safe_LocalImplementation()
{
// Here we guarantee thread safety by not using any instance properties in the implementation.
// This is not always possible, and care must still be taken not to add them in the future.
var results = new ConcurrentBag <int>();
var opt = new ParallelOptions {
MaxDegreeOfParallelism = Iterations
};
ITwoPlusTwo implementation = new LocalTwoPlusTwo();
Parallel.For(0, Iterations, opt, i =>
{
var result = implementation.CalculateTwoPlusTwo();
results.Add(result);
});
Assert.IsEmpty(results.Where(r => r != RightAnswer));
}
public void A_SanityCheck()
{
ITwoPlusTwo implementation = new StaticTwoPlusTwo();
var result = implementation.CalculateTwoPlusTwo();
Assert.AreEqual(RightAnswer, result);
implementation = SingletonTwoPlusTwo.Instance;
result = implementation.CalculateTwoPlusTwo();
Assert.AreEqual(RightAnswer, result);
implementation = new InstanceTwoPlusTwo();
result = implementation.CalculateTwoPlusTwo();
Assert.AreEqual(RightAnswer, result);
implementation = new ThreadSafeInstanceTwoPlusTwo();
result = implementation.CalculateTwoPlusTwo();
Assert.AreEqual(RightAnswer, result);
implementation = new LocalTwoPlusTwo();
result = implementation.CalculateTwoPlusTwo();
Assert.AreEqual(RightAnswer, result);
}