public void GivenEmptyDictionaryNode_WhenFindCalled_ShouldReturnNull()
{
var dictionary = new TreeBasedDictionary();
var aNode = dictionary.Find("a");
Assert.That(aNode, Is.Null);
}
public void GivenDictionaryWithNodeAdded_WhenFindCalled_ShouldReturnNotNull()
{
var dictionary = new TreeBasedDictionary();
dictionary.Add("a");
var aNode = dictionary.Find("a");
Assert.That(aNode, Is.Not.Null);
}
public void GivenDictionaryWithNodeAddedForWord_WhenWordsCalled_ShouldReturnTheWord()
{
var dictionary = new TreeBasedDictionary();
dictionary.Add("an");
var words = dictionary.Words();
Assert.That(words, Is.EquivalentTo(new [] { "an" }));
}
public void GivenDictionaryWithBluesAndBlues_WhenWordsCalled_ShouldReturnBothWords()
{
var dictionary = new TreeBasedDictionary();
dictionary.Add("blues");
dictionary.Add("blue");
var words = dictionary.Words();
Assert.That(words, Is.EquivalentTo(new[] { "blue", "blues" }));
}
public void GivenDictionaryWithNodeAddedForTwoCharWord_WhenFindCalledOnceOnEachChar_ShouldReturnSameNodeAsFindCalledOnceOnWholeWord()
{
var dictionary = new TreeBasedDictionary();
dictionary.Add("an");
var anNodeReachedBySingleCall = dictionary.Find("an");
var anNodeReachedyTwoCalls = dictionary.Find("a").FindNodeOrNull('n');
Assert.That(anNodeReachedBySingleCall, Is.EqualTo(anNodeReachedyTwoCalls));
}
public void GivenDictionaryWithGrayAndGreen_WhenWordsCalledBeginningWithGre_ShouldReturnOnly_en()
{
var dictionary = new TreeBasedDictionary();
dictionary.Add("gray");
dictionary.Add("green");
var node = dictionary.Find("gre");
var words = node.Words(string.Empty);
Assert.That(words, Is.EquivalentTo(new[] { "en" }));
}
