ObjectArrayIteratorTest.java
/*
* 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
*
* https://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.commons.collections4.iterators;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertThrows;
import java.util.Iterator;
import java.util.NoSuchElementException;
import org.junit.jupiter.api.Test;
/**
* Tests the ObjectArrayIterator.
*
* @param <E> the type of elements tested by this iterator.
*/
public class ObjectArrayIteratorTest<E> extends AbstractIteratorTest<E> {
protected String[] testArray = { "One", "Two", "Three" };
@SuppressWarnings("unchecked")
public ObjectArrayIterator<E> makeArrayIterator() {
return new ObjectArrayIterator<>();
}
public ObjectArrayIterator<E> makeArrayIterator(final E[] array) {
return new ObjectArrayIterator<>(array);
}
public ObjectArrayIterator<E> makeArrayIterator(final E[] array, final int index) {
return new ObjectArrayIterator<>(array, index);
}
public ObjectArrayIterator<E> makeArrayIterator(final E[] array, final int start, final int end) {
return new ObjectArrayIterator<>(array, start, end);
}
@Override
@SuppressWarnings("unchecked")
public ObjectArrayIterator<E> makeEmptyIterator() {
return new ObjectArrayIterator<>((E[]) new Object[0]);
}
@Override
@SuppressWarnings("unchecked")
public ObjectArrayIterator<E> makeObject() {
return new ObjectArrayIterator<>((E[]) testArray);
}
@Override
public boolean supportsRemove() {
return false;
}
@Test
void testIterator() {
final Iterator<E> iter = makeObject();
for (final String testValue : testArray) {
final E iterValue = iter.next();
assertEquals(testValue, iterValue, "Iteration value is correct");
}
assertFalse(iter.hasNext(), "Iterator should now be empty");
assertThrows(NoSuchElementException.class, iter::next);
}
@Test
void testNullArray() {
assertThrows(NullPointerException.class, () -> makeArrayIterator(null));
}
@Test
@SuppressWarnings("unchecked")
void testReset() {
final ObjectArrayIterator<E> it = makeArrayIterator((E[]) testArray);
it.next();
it.reset();
assertEquals("One", it.next());
}
}