public void MarkovLink_IsPrefix_CorrectPrefix_ReturnTrue()
{
var r = new Random();
var chain = new MarkovLink<string>(r);
var prefix = new[] {"one", "two"};
chain.Prefixes = new List<string>(prefix);
CollectionAssert.AreEqual(prefix, chain.Prefixes);
Assert.IsTrue(chain.IsPrefix(prefix));
}
public void MarkovLink_IsPrefix_IncorrectPrefix_ReturnFalse()
{
var r = new Random();
var chain = new MarkovLink<string>(r);
var prefix = new[] {"one", "two"};
chain.Prefixes = new List<string>(prefix);
var differentPrefix = new[] {"two", "three"};
var outOfOrderPrefix = new[] {"two", "one"};
Assert.IsFalse(chain.IsPrefix(differentPrefix));
Assert.IsFalse(chain.IsPrefix(outOfOrderPrefix));
}
private MarkovLink<char> GetLink(MarkovLink<char> key)
{
if (_links.ContainsKey(key.GetHashCode()))
return _links[key.GetHashCode()];
else
return null;
}
private void AddLink(char[] bitOfIndex)
{
var link = new MarkovLink<char>(_r);
link.Prefixes.AddRange(bitOfIndex.Take(LettersToKeep - 1));
link.AddSuffix(bitOfIndex.Last());
var targetLink = GetLink(link);
if (targetLink == null)
{
_links.Add(link.GetHashCode(), link);
}
else
{
targetLink.AddSuffixFromLink(link);
}
}