public void Remove_TrieEmpty_AlwaysReturnsFalse()
{
WordTrie trie = new WordTrie();
Assert.False(trie.Remove(new Word("z")));
Assert.False(trie.Remove(new Word("zy")));
Assert.False(trie.Remove(new Word("zyx")));
Assert.False(trie.Remove(new Word("zyxw")));
Assert.False(trie.Remove(new Word("abcdefghijklmno")));
}
public void Contains_ReturnsTrueIfFoundFalseOtherwise()
{
WordTrie trie = new WordTrie();
Assert.False(trie.Contains(new Word("a")));
trie.Add(new Word("a"));
Assert.True(trie.Contains(new Word("a")));
Assert.False(trie.Contains(new Word("ab")));
trie.Add(new Word("abc"));
Assert.False(trie.Contains(new Word("ab")));
Assert.True(trie.Contains(new Word("abc")));
trie.Remove(new Word("abc"));
Assert.False(trie.Contains(new Word("ab")));
Assert.False(trie.Contains(new Word("abc")));
trie.Add(new Word("abcdefghijklmno"));
Assert.False(trie.Contains(new Word("ab")));
Assert.False(trie.Contains(new Word("abc")));
Assert.False(trie.Contains(new Word("abcd")));
Assert.False(trie.Contains(new Word("abcde")));
Assert.False(trie.Contains(new Word("abcdef")));
Assert.False(trie.Contains(new Word("abcdefg")));
Assert.False(trie.Contains(new Word("abcdefgh")));
Assert.False(trie.Contains(new Word("abcdefghi")));
Assert.False(trie.Contains(new Word("abcdefghij")));
Assert.False(trie.Contains(new Word("abcdefghijk")));
Assert.False(trie.Contains(new Word("abcdefghijkl")));
Assert.False(trie.Contains(new Word("abcdefghijklm")));
Assert.False(trie.Contains(new Word("abcdefghijklmn")));
Assert.True(trie.Contains(new Word("abcdefghijklmno")));
}
public void Remove_FirstTimeReturnsTrueNextTimeReturnsFalse()
{
WordTrie trie = new WordTrie();
trie.Add(new Word("z"));
Assert.True(trie.Remove(new Word("z")));
Assert.False(trie.Remove(new Word("z")));
Assert.False(trie.Remove(new Word("z")));
trie.Add(new Word("zz"));
Assert.True(trie.Remove(new Word("zz")));
Assert.False(trie.Remove(new Word("zz")));
Assert.False(trie.Remove(new Word("zz")));
trie.Add(new Word("zzx"));
Assert.True(trie.Remove(new Word("zzx")));
Assert.False(trie.Remove(new Word("zzx")));
Assert.False(trie.Remove(new Word("zzx")));
trie.Add(new Word("zwxy"));
Assert.True(trie.Remove(new Word("zwxy")));
Assert.False(trie.Remove(new Word("zwxy")));
Assert.False(trie.Remove(new Word("zwxy")));
trie.Add(new Word("vwxy"));
Assert.True(trie.Remove(new Word("vwxy")));
Assert.False(trie.Remove(new Word("vwxy")));
Assert.False(trie.Remove(new Word("vwxy")));
}