/**
* 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.mahout.cf.taste.impl.common;
import org.apache.mahout.cf.taste.impl.TasteTestCase;
import org.junit.Test;
import java.util.NoSuchElementException;
public final class LongPrimitiveArrayIteratorTest extends TasteTestCase {
@Test(expected = NoSuchElementException.class)
public void testEmpty() {
LongPrimitiveIterator it = new LongPrimitiveArrayIterator(new long[0]);
assertFalse(it.hasNext());
it.next();
}
@Test(expected = NoSuchElementException.class)
public void testNext() {
LongPrimitiveIterator it = new LongPrimitiveArrayIterator(new long[] {3,2,1});
assertTrue(it.hasNext());
assertEquals(3, (long) it.next());
assertTrue(it.hasNext());
assertEquals(2, it.nextLong());
assertTrue(it.hasNext());
assertEquals(1, (long) it.next());
assertFalse(it.hasNext());
it.nextLong();
}
@Test
public void testPeekSkip() {
LongPrimitiveIterator it = new LongPrimitiveArrayIterator(new long[] {3,2,1});
assertEquals(3, it.peek());
it.skip(2);
assertEquals(1, it.nextLong());
assertFalse(it.hasNext());
}
}