public void Match2_EmptyTrie_DoesNothing()
{
Word3Trie trie = new Word3Trie();
int count = 0;
trie.Match2('a', 'b', w => ++ count);
Assert.Equal(0, count);
}
public void Match2_NoMatch_DoesNothing()
{
Word3Trie trie = new Word3Trie();
trie.Add(new Word3("bbb"));
int count = 0;
trie.Match2('b', 'a', w => ++ count);
Assert.Equal(0, count);
}
public void Match2_NullOnMatch_ThrowsArgumentNull()
{
Word3Trie trie = new Word3Trie();
Action <Word3> onMatch = null;
Exception e = Record.Exception(() => trie.Match2('a', 'b', onMatch));
Assert.NotNull(e);
ArgumentNullException ane = Assert.IsType <ArgumentNullException>(e);
Assert.Equal("onMatch", ane.ParamName);
}
public void Match2_WithMatches_ExecutesForEachPrefixMatch()
{
Word3Trie trie = new Word3Trie();
trie.Add(new Word3("aab"));
trie.Add(new Word3("abc"));
trie.Add(new Word3("aba"));
trie.Add(new Word3("bbc"));
trie.Add(new Word3("baa"));
List <string> wordsSeen = new List <string>();
trie.Match2('a', 'b', w => wordsSeen.Add(w.ToString()));
wordsSeen.Sort();
Assert.Equal(2, wordsSeen.Count);
Assert.Equal("aba", wordsSeen[0]);
Assert.Equal("abc", wordsSeen[1]);
}