/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.flink.api.common.operators.util;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.assertFalse;
import java.util.Arrays;
import java.util.Iterator;
import org.apache.flink.api.common.operators.util.FieldList;
import org.apache.flink.api.common.operators.util.FieldSet;
import org.junit.Test;
public class FieldListTest {
@Test
public void testFieldListConstructors() {
check(new FieldList());
check(FieldList.EMPTY_LIST);
check(new FieldList(14), 14);
check(new FieldList(Integer.valueOf(3)), 3);
check(new FieldList(7, 4, 1), 7, 4, 1);
check(new FieldList(7, 4, 1, 4, 7, 1, 4, 2), 7, 4, 1, 4, 7, 1, 4, 2);
}
@Test
public void testFieldListAdds() {
check(new FieldList().addField(1).addField(2), 1, 2);
check(FieldList.EMPTY_LIST.addField(3).addField(2), 3, 2);
check(new FieldList(13).addFields(new FieldList(17, 31, 42)), 13, 17, 31, 42);
check(new FieldList(14).addFields(new FieldList(17)), 14, 17);
check(new FieldList(3).addFields(2, 8, 5, 7), 3, 2, 8, 5, 7);
}
@Test
public void testImmutability() {
FieldList s1 = new FieldList();
FieldList s2 = new FieldList(5);
FieldList s3 = new FieldList(Integer.valueOf(7));
FieldList s4 = new FieldList(5, 4, 7, 6);
s1.addFields(s2).addFields(s3);
s2.addFields(s4);
s4.addFields(s1);
s1.addField(Integer.valueOf(14));
s2.addFields(78, 13, 66, 3);
assertEquals(0, s1.size());
assertEquals(1, s2.size());
assertEquals(1, s3.size());
assertEquals(4, s4.size());
}
@Test
public void testAddSetToList() {
check(new FieldList().addFields(new FieldSet(1)).addFields(2), 1, 2);
check(new FieldList().addFields(1).addFields(new FieldSet(2)), 1, 2);
check(new FieldList().addFields(new FieldSet(2)), 2);
}
private static void check(FieldList set, int... elements) {
if (elements == null) {
assertEquals(0, set.size());
return;
}
assertEquals(elements.length, set.size());
// test contains
for (int i : elements) {
set.contains(i);
}
// test to array
{
int[] arr = set.toArray();
assertTrue(Arrays.equals(arr, elements));
}
{
int[] fromIter = new int[set.size()];
Iterator<Integer> iter = set.iterator();
for (int i = 0; i < fromIter.length; i++) {
fromIter[i] = iter.next();
}
assertFalse(iter.hasNext());
assertTrue(Arrays.equals(fromIter, elements));
}
}
}