public void CanComparePositions()
{
var list = new ChunkedList <int>(20);
list.AddRange(Enumerable.Range(1, 10).ToArray());
var en = list.GetEnumerator();
var en2 = list.GetEnumerator();
en.MoveNext().ShouldBeTrue();
en2.MoveNext().ShouldBeTrue();
en.AsComparable().IsPositionEqual(en2.AsComparable()).ShouldBeTrue();
en2.MoveNext().ShouldBeTrue();
en.AsComparable().IsPositionEqual(en2.AsComparable()).ShouldBeFalse();
}
public void CanGetPosition()
{
var list = new ChunkedList <int>(20);
list.AddRange(Enumerable.Range(0, 10).ToArray());
var en = list.GetEnumerator();
en.Position.ShouldEqual(-1);
for (int i = 0; i < 5; i++)
{
en.MoveNext().ShouldBeTrue();
}
en.Position.ShouldEqual(4);
for (int i = 0; i < 4; i++)
{
en.MoveNext().ShouldBeTrue();
}
en.Position.ShouldEqual(8);
while (en.MoveNext())
{
;
}
en.Position.ShouldEqual(9);
}
public void CanGetEnumeratorOfEnumerator()
{
var list = new ChunkedList <int>();
var en = list.GetEnumerator();
var en2 = en.GetEnumerator();
ReferenceEquals(en, en2).ShouldBeTrue();
}
public void CanGetCount()
{
var list = new ChunkedList <int>(20);
list.AddRange(Enumerable.Range(1, 10).ToArray());
var en = list.GetEnumerator();
en.Count.ShouldEqual(10);
}
public void CanStartFromIndexPastEnd()
{
var list = new ChunkedList <int>(20);
list.AddRange(Enumerable.Range(0, 10).ToArray());
var en = list.GetEnumerator();
en.FromIndex(10).ShouldBeTrue();
en.Current.ShouldEqual(9);
en.MoveNext().ShouldBeFalse();
}
public void CantUseWhenListEmpty()
{
var list = new ChunkedList <int>();
var en = list.GetEnumerator();
en.Count.ShouldEqual(0);
en.MovePrev().ShouldBeFalse();
en.MoveNext().ShouldBeFalse();
Trap.Exception(() => en.FromFirst()).ShouldBeInstanceOf <InvalidOperationException>();
Trap.Exception(() => en.FromLast()).ShouldBeInstanceOf <InvalidOperationException>();
}
public void CantStartFromNegativeIndex()
{
var list = new ChunkedList <int>(20);
list.AddRange(Enumerable.Range(1, 10).ToArray());
var en = list.GetEnumerator();
en.MoveNext().ShouldBeTrue();
en.Current.ShouldEqual(1);
en.FromIndex(-1).ShouldBeFalse();
en.Current.ShouldEqual(1);
}
public void CanStartFromIndexInBeginningOfBucket()
{
var list = new ChunkedList <int>(20);
list.AddRange(Enumerable.Range(0, 10).ToArray());
var en = list.GetEnumerator();
en.FromIndex(6).ShouldBeTrue();
en.Current.ShouldEqual(5);
en.MoveNext().ShouldBeTrue();
en.Current.ShouldEqual(6);
}
public void CanSetToLast()
{
var list = new ChunkedList <int>();
list.AddRange(Enumerable.Range(1, 10).ToArray());
var en = list.GetEnumerator();
en.FromLast();
en.HasMore.ShouldBeFalse();
en.MovePrev().ShouldBeTrue();
en.Current.ShouldEqual(10);
}
public void CanReset()
{
var list = new ChunkedList <int>(20);
list.AddRange(Enumerable.Range(1, 10).ToArray());
var en = list.GetEnumerator();
en.MoveNext().ShouldBeTrue();
en.Current.ShouldEqual(1);
en.Reset();
en.Current.ShouldEqual(0);
en.MoveNext().ShouldBeTrue();
en.Current.ShouldEqual(1);
}
public void CanIterateBackwardsUntilNoMoreItems()
{
var list = new ChunkedList <int>(20);
list.AddRange(Enumerable.Range(1, 10).ToArray());
var en = list.GetEnumerator();
en.FromLast();
int idx = 10;
while (en.MovePrev())
{
en.Current.ShouldEqual(idx);
idx--;
}
}
public void CanEnumerateBackwards()
{
var list = new ChunkedList <int>();
list.AddRange(Enumerable.Range(1, 10).ToArray());
var en = list.GetEnumerator();
en.FromLast();
en.HasMore.ShouldBeFalse();
for (int i = 10; i > 0; i--)
{
en.MovePrev().ShouldBeTrue();
en.Current.ShouldEqual(i);
}
}
public void CanSetToFirst()
{
var list = new ChunkedList <int>();
list.AddRange(Enumerable.Range(1, 10).ToArray());
var en = list.GetEnumerator();
while (en.HasMore)
{
en.MoveNext();
}
en.FromFirst();
en.HasMore.ShouldBeTrue();
en.MoveNext().ShouldBeTrue();
en.Current.ShouldEqual(1);
}
public void CanCloneEnumerator()
{
var list = new ChunkedList <int>(20);
list.AddRange(Enumerable.Range(0, 10).ToArray());
var en = list.GetEnumerator();
for (int i = 0; i < 5; i++)
{
en.MoveNext().ShouldBeTrue();
en.Current.ShouldEqual(i);
}
en = en.Clone();
for (int i = 5; i < 10; i++)
{
en.MoveNext().ShouldBeTrue();
en.Current.ShouldEqual(i);
}
}
