/*
* Copyright 2015, 2016 Tagir Valeev
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package one.util.streamex;
import java.util.Arrays;
import java.util.List;
import java.util.Map.Entry;
import java.util.stream.Stream;
import org.junit.Test;
import static one.util.streamex.TestHelpers.*;
/**
* @author Tagir Valeev
*
*/
public class TreeSpliteratorTest {
@Test
public void testPlainSpliterator() {
List<String> expected = Arrays.asList("", "a", "aa", "aaa", "aaaa", "aaab", "aab", "aaba", "aabb", "ab", "aba",
"abaa", "abab", "abb", "abba", "abbb", "b", "ba", "baa", "baaa", "baab", "bab", "baba", "babb", "bb", "bba",
"bbaa", "bbab", "bbb", "bbba", "bbbb");
checkSpliterator("tree", expected, () -> new TreeSpliterator.Plain<String>("", s -> s.length() == 4 ? null
: Stream.of("a", "b").map(s::concat)));
}
@Test
public void testDepthSpliterator() {
List<Entry<Integer, String>> expected = StreamEx.of("", "a", "aa", "ab", "ac", "b", "ba", "bb", "bc", "c", "ca",
"cb", "cc").mapToEntry(String::length).invert().toList();
checkSpliterator("tree", expected, () -> new TreeSpliterator.Depth<String>("", (depth, s) -> depth == 2 ? null
: Stream.of("a", "b", "c").map(s::concat)));
}
}