public void ToStringTest()
{
T[] a = new T[] { two, one, three, four, seven };
AtomicReferenceArray <T> ai = new AtomicReferenceArray <T>(a);
Assert.AreEqual(ConvertArrayToString(a), ai.ToString());
Assert.AreEqual("[]", new AtomicReferenceArray <T>(0).ToString());
}
public void ConstructAtomicIntegerArryWithGivenSize()
{
AtomicReferenceArray <T> ai = new AtomicReferenceArray <T>(DEFAULT_COLLECTION_SIZE);
for (int i = 0; i < DEFAULT_COLLECTION_SIZE; ++i)
{
Assert.IsNull(ai[i]);
}
}
public void ConstructFromExistingArray()
{
T[] a = new T[] { two, one, three, four, seven };
AtomicReferenceArray <T> ai = new AtomicReferenceArray <T>(a);
Assert.AreEqual(a.Length, ai.Count);
for (int i = 0; i < a.Length; ++i)
{
Assert.AreEqual(a[i], ai[i]);
}
}
/// <summary>
/// Creates a new <see cref="AtomicReferenceArray{T}"/> of <paramref name="length"/>.
/// </summary>
/// <param name="length">
/// the length of the array
/// </param>
public AtomicArray(int length)
{
ValueHolder <T> holder = new ValueHolder <T>();
ValueHolder <T>[] holders = new ValueHolder <T> [length];
for (int i = 0; i < length; i++)
{
holders[i] = holder;
}
_atomicReferenceArray = new AtomicReferenceArray <ValueHolder <T> >(holders);
}
public void Exchange()
{
AtomicReferenceArray <T> ai = new AtomicReferenceArray <T>(DEFAULT_COLLECTION_SIZE);
for (int i = 0; i < DEFAULT_COLLECTION_SIZE; ++i)
{
ai.Exchange(i, one);
Assert.AreEqual(one, ai.Exchange(i, zero));
Assert.AreEqual(zero, ai.Exchange(i, m10));
Assert.AreEqual(m10, ai.Exchange(i, one));
}
}
public void GetReturnsLastValueSetAtIndex()
{
AtomicReferenceArray <T> ai = new AtomicReferenceArray <T>(DEFAULT_COLLECTION_SIZE);
for (int i = 0; i < DEFAULT_COLLECTION_SIZE; ++i)
{
ai[i] = one;
Assert.AreEqual(one, ai[i]);
ai[i] = two;
Assert.AreEqual(two, ai[i]);
ai[i] = m3;
Assert.AreEqual(m3, ai[i]);
}
}
public void GetReturnsLastValueLazySetAtIndex()
{
AtomicReferenceArray <T> ai = new AtomicReferenceArray <T>(DEFAULT_COLLECTION_SIZE);
for (int i = 0; i < DEFAULT_COLLECTION_SIZE; ++i)
{
ai.LazySet(i, one);
Assert.AreEqual(one, ai[i]);
ai.LazySet(i, two);
Assert.AreEqual(two, ai[i]);
ai.LazySet(i, m3);
Assert.AreEqual(m3, ai[i]);
}
}
public void IndexerChokesOnOutOfRangeIndex()
{
AtomicReferenceArray <T> ai = new AtomicReferenceArray <T>(DEFAULT_COLLECTION_SIZE);
T a = null;
TestHelper.AssertException <IndexOutOfRangeException>(
delegate { a = ai[DEFAULT_COLLECTION_SIZE]; });
TestHelper.AssertException <IndexOutOfRangeException>(
delegate { a = ai[-1]; });
TestHelper.AssertException <IndexOutOfRangeException>(
delegate { ai.Exchange(DEFAULT_COLLECTION_SIZE, zero); });
TestHelper.AssertException <IndexOutOfRangeException>(
delegate { ai.Exchange(-1, zero); });
Assert.IsNull(a);
}
/// <summary>
/// Creates a new <see cref="AtomicReferenceArray{T}"/> with the same length as, and
/// all elements copied from <paramref name="array"/>
/// </summary>
/// <param name="array">
/// The array to copy elements from
/// </param>
/// <throws><see cref="ArgumentNullException"/>if array is null</throws>
public AtomicArray(T[] array)
{
if (array == null)
{
throw new ArgumentNullException("array");
}
int length = array.Length;
ValueHolder <T>[] holders = new ValueHolder <T> [length];
for (int i = 0; i < length; i++)
{
holders[i] = new ValueHolder <T>(array[i]);
}
_atomicReferenceArray = new AtomicReferenceArray <ValueHolder <T> >(holders);
}
public void CompareExistingValueAndSetNewValue()
{
AtomicReferenceArray <T> ai = new AtomicReferenceArray <T>(DEFAULT_COLLECTION_SIZE);
for (int i = 0; i < DEFAULT_COLLECTION_SIZE; ++i)
{
ai.Exchange(i, one);
Assert.IsTrue(ai.CompareAndSet(i, one, two));
Assert.IsTrue(ai.CompareAndSet(i, two, m4));
Assert.AreEqual(m4, ai[i]);
Assert.IsFalse(ai.CompareAndSet(i, m5, seven));
Assert.IsFalse((seven.Equals(ai[i])));
Assert.IsTrue(ai.CompareAndSet(i, m4, seven));
Assert.AreEqual(seven, ai[i]);
}
}
public void CompareAndSetInMultipleThreads()
{
AtomicReferenceArray <T> a = new AtomicReferenceArray <T>(1);
a.Exchange(0, one);
Thread t = ThreadManager.StartAndAssertRegistered(
"T1", () => { while (!a.CompareAndSet(0, two, three))
{
Thread.Sleep(Delays.Short);
}
});
Assert.IsTrue(a.CompareAndSet(0, one, two));
ThreadManager.JoinAndVerify(Delays.Long);
Assert.IsFalse(t.IsAlive);
Assert.AreEqual(a[0], three);
}
public void WeakCompareAndSet()
{
AtomicReferenceArray <T> ai = new AtomicReferenceArray <T>(DEFAULT_COLLECTION_SIZE);
for (int i = 0; i < DEFAULT_COLLECTION_SIZE; ++i)
{
ai.Exchange(i, one);
while (!ai.WeakCompareAndSet(i, one, two))
{
}
while (!ai.WeakCompareAndSet(i, two, m4))
{
}
Assert.AreEqual(m4, ai[i]);
while (!ai.WeakCompareAndSet(i, m4, seven))
{
}
Assert.AreEqual(seven, ai[i]);
}
}
public void SerializeAndDeserialize()
{
AtomicReferenceArray <T> atomicReferenceArray = new AtomicReferenceArray <T>(DEFAULT_COLLECTION_SIZE);
for (int i = 0; i < DEFAULT_COLLECTION_SIZE; ++i)
{
atomicReferenceArray.Exchange(i, TestData <T> .MakeData(-i));
}
MemoryStream bout = new MemoryStream(10000);
BinaryFormatter formatter = new BinaryFormatter();
formatter.Serialize(bout, atomicReferenceArray);
MemoryStream bin = new MemoryStream(bout.ToArray());
BinaryFormatter formatter2 = new BinaryFormatter();
AtomicReferenceArray <T> r = (AtomicReferenceArray <T>)formatter2.Deserialize(bin);
Assert.AreEqual(atomicReferenceArray.Count, r.Count);
for (int i = 0; i < DEFAULT_COLLECTION_SIZE; ++i)
{
Assert.AreEqual(r[i], atomicReferenceArray[i]);
}
}