public void Remove_TrieEmpty_AlwaysReturnsFalse()
{
Word3Trie trie = new Word3Trie();
Assert.False(trie.Remove(new Word3("zzz")));
Assert.False(trie.Remove(new Word3("zzy")));
Assert.False(trie.Remove(new Word3("zxy")));
Assert.False(trie.Remove(new Word3("wxy")));
}
public void Contains_ReturnsTrueIfFoundFalseOtherwise()
{
Word3Trie trie = new Word3Trie();
Assert.False(trie.Contains(new Word3("abc")));
trie.Add(new Word3("abc"));
Assert.True(trie.Contains(new Word3("abc")));
Assert.False(trie.Contains(new Word3("abd")));
trie.Add(new Word3("abd"));
Assert.True(trie.Contains(new Word3("abd")));
trie.Remove(new Word3("abc"));
Assert.False(trie.Contains(new Word3("abc")));
}
public void Remove_FirstTimeReturnsTrueNextTimeReturnsFalse()
{
Word3Trie trie = new Word3Trie();
trie.Add(new Word3("zzz"));
Assert.True(trie.Remove(new Word3("zzz")));
Assert.False(trie.Remove(new Word3("zzz")));
Assert.False(trie.Remove(new Word3("zzz")));
trie.Add(new Word3("zzy"));
Assert.True(trie.Remove(new Word3("zzy")));
Assert.False(trie.Remove(new Word3("zzy")));
Assert.False(trie.Remove(new Word3("zzy")));
trie.Add(new Word3("zxy"));
Assert.True(trie.Remove(new Word3("zxy")));
Assert.False(trie.Remove(new Word3("zxy")));
Assert.False(trie.Remove(new Word3("zxy")));
trie.Add(new Word3("wxy"));
Assert.True(trie.Remove(new Word3("wxy")));
Assert.False(trie.Remove(new Word3("wxy")));
Assert.False(trie.Remove(new Word3("wxy")));
}