public void CollectionIterator_Current_BecomesNullAtTheEnd()
{
CollectionIterator <int> iterator = new CollectionIterator <int>(ListOfTenIntegers);
for (int i = 1; i <= 10; i++)
{
iterator.MoveNext();
}
Assert.AreEqual(default(int), iterator.Current);
}
public void CollectionIterator_Current_ReturnsCurrentItem()
{
CollectionIterator <int> iterator = new CollectionIterator <int>(ListOfTenIntegers);
for (int i = 1; i <= 10; i++)
{
Assert.AreEqual(i, iterator.Current);
iterator.MoveNext();
}
}
public void CollectionIterator_IsEnd_IndicatesThatIteratorReachesTheEndOfSequence()
{
CollectionIterator <int> iterator = new CollectionIterator <int>(ListOfTenIntegers);
for (int i = 1; i <= 10; i++)
{
Assert.IsFalse(iterator.IsEnd);
iterator.MoveNext();
}
Assert.IsTrue(iterator.IsEnd);
}
public void CollectionIterator_MoveNext_MovesCurrentPositionToNextItem()
{
CollectionIterator <int> iterator = new CollectionIterator <int>(ListOfTenIntegers);
for (int i = 1; i <= 10; i++)
{
Assert.AreEqual(i, iterator.Current);
Assert.IsFalse(iterator.IsEnd);
iterator.MoveNext();
}
Assert.AreEqual(default(int), iterator.Current);
Assert.IsTrue(iterator.IsEnd);
}