public void DoesLazyReturnsTheSameObjectAsAfterEvaluationTest()
{
var justEvaluatedMatrix = lazyGiantMatrix.Get();
var alreadyEvaluatedMatrix = lazyGiantMatrix.Get();
Assert.AreSame(justEvaluatedMatrix, alreadyEvaluatedMatrix);
}
public void GetOnlyOnce()
{
int number = 1;
lazy = LazyFactory <int> .CreateMultiLazy(() => ++ number);
Assert.AreEqual(2, lazy.Get());
Assert.AreEqual(2, lazy.Get());
}
public void GetShouldNotChangeValue <T>(ILazy <T> lazy)
{
var value = lazy.Get();
Assert.AreEqual(value, 1);
for (int i = 0; i < 50; i++)
{
Assert.AreEqual(value, lazy.Get());
}
}
public void DoesConcurrentLazyReturnTheSameObjectInMultithreadedScenarioTest()
{
var threadCount = 20;
var threads = new Thread[threadCount];
var matrices = new GiantMatrix[threadCount];
countdownEvent = new CountdownEvent(threadCount);
for (var i = 0; i < threads.Length; ++i)
{
var threadNumber = i;
threads[i] = new Thread(() =>
{
resetEvent.WaitOne();
matrices[threadNumber] = lazyGiantMatrix.Get();
countdownEvent.Signal();
});
}
foreach (var thread in threads)
{
thread.Start();
}
resetEvent.Set();
countdownEvent.Wait();
AreAllTheSameObject(matrices);
}
public void GetOnlyOnceInManyThreads()
{
int number = 1;
lazy = LazyFactory <int> .CreateMultiLazy(() => ++ number);
threads = new Thread[10];
for (int i = 0; i < 10; i++)
{
threads[i] = new Thread(() =>
{
Assert.AreEqual(2, lazy.Get());
Assert.AreEqual(2, lazy.Get());
Assert.AreEqual(2, lazy.Get());
});
}
}
public void GetTest()
{
int number = 1;
lazy = LazyFactory <int> .CreateLazy(() => ++ number);
Assert.AreEqual(2, lazy.Get());
}
public void MultipleGetTest()
{
const int GetAmount = 20;
var count = 0;
testLazy = LazyFactory.CreateThreadSafeLazy <T>(() => {
++count;
return(supplier());
});
for (var i = 0; i < GetAmount; ++i)
{
Assert.AreEqual(expectedValue, testLazy.Get());
}
Assert.AreEqual(1, count);
}
public void SingleGetTest()
{
testLazy = LazyFactory.CreateThreadSafeLazy <T>(supplier);
Assert.AreEqual(expectedValue, testLazy.Get());
}
public void ReturnsCorrectValue() => Assert.AreEqual(1, lazy.Get());