/*
* 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 org.junit.Test;
import java.lang.invoke.MethodHandle;
import java.util.*;
import java.util.stream.Stream;
import static one.util.streamex.StreamExInternals.ArrayCollection;
import static one.util.streamex.StreamExInternals.PartialCollector;
import static org.junit.Assert.*;
/**
* Tests for non-public APIs in StreamExInternals
*
* @author Tagir Valeev
*/
public class InternalsTest {
@Test
public void testArrayCollection() {
Collection<Object> collection = new ArrayCollection(new Object[] { "1", "2" });
List<Object> list = new LinkedList<>(collection);
assertEquals("1", list.get(0));
assertEquals("2", list.get(1));
List<Object> list2 = new ArrayList<>(collection);
assertEquals("1", list.get(0));
assertEquals("2", list.get(1));
assertEquals(list2, list);
Set<Object> set = new HashSet<>(collection);
assertTrue(set.contains("1"));
assertTrue(set.contains("2"));
assertEquals(2, set.size());
}
@Test(expected = UnsupportedOperationException.class)
public void testPartialCollector() {
PartialCollector.intSum().accumulator();
}
@Test
public void testJdk9Basics() {
MethodHandle[][] jdk9Methods = Java9Specific.initJdk9Methods();
if (Stream.of(Stream.class.getMethods()).anyMatch(m -> m.getName().equals("takeWhile")))
assertNotNull(jdk9Methods);
else
assertNull(jdk9Methods);
}
}