public void CopyTo()
{
var trie = new StringTrie <bool> {
{ "ABC", true }, { "AB", false }, { "ADE", true }, { "ABCDE", false }
};
var destinationArray = new KeyValuePair <string, bool> [6];
trie.CopyTo(destinationArray, 1);
var result = destinationArray.Where(i => i.Key != null).OrderBy(i => i.Key).ToArray();
var expected = new[]
{
new KeyValuePair <string, bool>("AB", false),
new KeyValuePair <string, bool>("ABC", true),
new KeyValuePair <string, bool>("ABCDE", false),
new KeyValuePair <string, bool>("ADE", true)
};
Assert.Equal(new KeyValuePair <string, bool>(), destinationArray[0]);
Assert.Equal(new KeyValuePair <string, bool>(), destinationArray[^ 1]);