public void ShouldBeAbleToPeekAtTheNextItem()
{
var items = new List <object> {
1, 2
};
var tokenizableStreamBase = new TokenizableStreamBase <object>(() => items);
Assert.AreEqual(1, tokenizableStreamBase.Current);
Assert.AreEqual(2, tokenizableStreamBase.Peek());
}
public void ShouldBeaBleToPeekWithoutConsumingTheCurrentItem()
{
var items = new List <object> {
1, 2
};
var tokenizableStreamBase = new TokenizableStreamBase <object>(() => items);
Assert.AreEqual(1, tokenizableStreamBase.Current);
Assert.AreEqual(2, tokenizableStreamBase.Peek());
Assert.AreEqual(1, tokenizableStreamBase.Current);
}
public void ShouldReturnNullWhenPeekingAfterTheLastItem()
{
var items = new List <object> {
1
};
var tokenizableStreamBase = new TokenizableStreamBase <object>(() => items);
Assert.AreEqual(1, tokenizableStreamBase.Current);
Assert.IsNull(tokenizableStreamBase.Peek());
Assert.IsNull(tokenizableStreamBase.Peek(3));
}
public void ShouldReturnNullFromCurrentAfterLastItemHaseBeenConsumed()
{
var items = new List <object> {
1
};
var tokenizableStreamBase = new TokenizableStreamBase <object>(() => items);
Assert.IsNotNull(tokenizableStreamBase.Current);
tokenizableStreamBase.Consume();
Assert.IsNull(tokenizableStreamBase.Current);
}
public void ShouldBeAbleToPeekAtFutureItems()
{
var items = new List <object> {
1, 2, 3, 4, 5, 6
};
var tokenizableStreamBase = new TokenizableStreamBase <object>(() => items);
Assert.AreEqual(1, tokenizableStreamBase.Current);
Assert.AreEqual(4, tokenizableStreamBase.Peek(3));
Assert.AreEqual(6, tokenizableStreamBase.Peek(5));
}
/// <summary>
/// Gets all the tokens in the stream.
/// </summary>
/// <param name="tokens">The tokens.</param>
/// <returns>A list of tokens.</returns>
public static List <TItem> GetAll <TItem>(this TokenizableStreamBase <TItem> tokens)
where TItem : class
{
var list = new List <TItem>();
while (!tokens.IsAtEnd())
{
list.Add(tokens.Current);
tokens.Consume();
}
return(list);
}
public void ShouldBeAbleToDetermineWhenTheLastItemHasBeenConsumed()
{
var items = new List <object> {
1
};
var tokenizableStreamBase = new TokenizableStreamBase <object>(() => items);
Assert.IsFalse(tokenizableStreamBase.IsAtEnd());
tokenizableStreamBase.Consume();
Assert.IsTrue(tokenizableStreamBase.IsAtEnd());
tokenizableStreamBase.Consume();
Assert.IsTrue(tokenizableStreamBase.IsAtEnd());
}
public void ShouldConsumeTokensFromTheExtractor()
{
var items = new List <object> {
1, 2, 3
};
var tokenizableStreamBase = new TokenizableStreamBase <object>(() => items);
Assert.AreEqual(1, tokenizableStreamBase.Current);
tokenizableStreamBase.Consume();
Assert.AreEqual(2, tokenizableStreamBase.Current);
tokenizableStreamBase.Consume();
Assert.AreEqual(3, tokenizableStreamBase.Current);
}
public void ShouldBeAbleToTakeASnapshot()
{
var items = new List <object> {
1, 2
};
var tokenizableStreamBase = new TokenizableStreamBase <object>(() => items);
Assert.AreEqual(1, tokenizableStreamBase.Current);
tokenizableStreamBase.TakeSnapshot();
Assert.AreEqual(1, tokenizableStreamBase.Current);
tokenizableStreamBase.Consume();
Assert.AreEqual(2, tokenizableStreamBase.Current);
}
public void ShouldBeAbleToRollbackASnapshotAfterTheLastItemHasBeenConsumed()
{
var items = new List <object> {
1, 2
};
var tokenizableStreamBase = new TokenizableStreamBase <object>(() => items);
Assert.AreEqual(1, tokenizableStreamBase.Current);
tokenizableStreamBase.TakeSnapshot();
tokenizableStreamBase.Consume();
tokenizableStreamBase.Consume();
tokenizableStreamBase.Consume();
Assert.IsTrue(tokenizableStreamBase.IsAtEnd());
tokenizableStreamBase.RollbackSnapshot();
Assert.AreEqual(1, tokenizableStreamBase.Current);
}
