public void GetCurrent__When_SourceIsEmpty_Must_ThrowAnException()
{
target = new WritingEnumerator <string>(new List <string>());
Assert.Throws <ArgumentOutOfRangeException>(
() => { var current = target.Current; });
}
public void IteratingOverItems__When_SourceIsNotEmpty_ShouldReturnAllItemsInTheSource(IList <string> values)
{
target = new WritingEnumerator <string>(values);
foreach (var value in values)
{
target.MoveNext();
Assert.AreEqual(value, target.Current);
}
}
public void Current__When_SourceIsEmptyInitially_WhenAnItemIsAdded_TheItemMustBeTheCurrentItem(
IList <string> values)
{
target = new WritingEnumerator <string>(new List <string>());
foreach (var value in values)
{
target.Add(value);
Assert.AreEqual(value, target.Current);
}
}
public void AddingItems__When_SourceIsEmptyInitially__Must_AddItemAtTheEndOfCollection(IList <string> values)
{
var source = new List <string>();
target = new WritingEnumerator <string>(source);
foreach (var value in values)
{
target.Add(value);
}
AssertionExtensions.SequencesAreEqual(values, source);
}
public void AddingItems__When_SourceIsNotEmptyInitially__Must_AddItemAtTheEndOfCollection(
IList <string> source,
IList <string> values)
{
var expectedCollection = source.Concat(values).ToList();
target = new WritingEnumerator <string>(source);
foreach (var value in values)
{
target.Add(value);
}
AssertionExtensions.SequencesAreEqual(expectedCollection, source);
}
public void FullEnumeration__When_SourceIsEmptyInitially_When_ItemsAreAdded__AndPositionIsReset__MustReturnEveryItem_InTheOriginalSequence(
IList <string> values)
{
var source = new List <string>();
target = new WritingEnumerator <string>(source);
foreach (var value in values)
{
target.Add(value);
}
target.ResetPosition();
foreach (var value in values)
{
target.MoveNext();
Assert.AreEqual(value, target.Current);
}
}
public Smartnumerator(IEnumerator <TValue> source)
{
this.source = source;
this.copyManager = new WritingEnumerator <TValue>(new List <TValue>());
}