/*
* 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.jena.atlas.iterator;
import java.util.Arrays ;
import java.util.Collection ;
import java.util.Iterator ;
import java.util.List ;
import org.apache.jena.atlas.junit.BaseTest ;
import org.junit.Test ;
import org.junit.runner.RunWith ;
import org.junit.runners.Parameterized ;
import org.junit.runners.Parameterized.Parameters ;
@RunWith(Parameterized.class)
public class TestIteratorSlotted extends BaseTest
{
@Parameters(name = "{index}: {0}")
public static Collection<Object[]> implementations() {
IterFactory factory1 = new IterFactory() {
@Override
public IteratorSlotted<String> create(String... array) {
return new IterStr1(array) ;
}} ;
IterFactory factory2 = new IterFactory() {
@Override
public IteratorSlotted<String> create(String... array) {
return new IterStr2(array) ;
}} ;
return Arrays.asList(new Object[][] { {"hasMore accurate", factory1}, {"hasMore always true", factory2} }) ;
}
/** Accurate hasMore */
static class IterStr1 extends IteratorSlotted<String>
{
private List<String> array ;
private Iterator<String> iter ;
IterStr1(String... array) {
this.array = Arrays.asList(array) ;
iter = this.array.iterator() ;
}
@Override
protected String moveToNext() {
return iter.next() ;
}
@Override
protected boolean hasMore() {
return iter.hasNext() ;
}
}
/** hasMore is always true, returns null in moveToNext */
static class IterStr2 extends IteratorSlotted<String>
{
private List<String> array ;
private Iterator<String> iter ;
IterStr2(String... array) {
this.array = Arrays.asList(array) ;
iter = this.array.iterator() ;
}
@Override
protected String moveToNext() {
if ( !iter.hasNext() )
return null ;
return iter.next() ;
}
@Override
protected boolean hasMore() {
return true ;
}
}
interface IterFactory { IteratorSlotted<String> create(String...array) ; }
private IterFactory factory ;
public TestIteratorSlotted(String name, IterFactory factory) {
this.factory = factory ;
}
@Test public void iter_01()
{
IteratorSlotted<String> iter = factory.create() ;
assertFalse(iter.hasNext()) ;
}
@Test public void iter_02()
{
IteratorSlotted<String> iter = factory.create("A") ;
assertTrue(iter.hasNext()) ;
assertEquals("A", iter.peek()) ;
assertEquals("A", iter.peek()) ;
assertEquals("A", iter.next()) ;
assertFalse(iter.hasNext()) ;
assertNull(iter.peek()) ;
}
@Test public void iter_03()
{
IteratorSlotted<String> iter = factory.create("A", "B") ;
assertTrue(iter.hasNext()) ;
assertEquals("A", iter.peek()) ;
assertEquals("A", iter.next()) ;
assertEquals("B", iter.peek()) ;
assertEquals("B", iter.next()) ;
assertFalse(iter.hasNext()) ;
}
}