/*
* Copyright 2006-2007 the original author or authors.
*
* 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 org.springframework.batch.item.support;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import java.util.Arrays;
import java.util.Iterator;
import org.junit.Before;
import org.junit.Test;
import org.springframework.batch.item.ExecutionContext;
/**
* @author Dave Syer
*
*/
public class ItemCountingItemStreamItemReaderTests {
private ItemCountingItemStreamItemReader reader = new ItemCountingItemStreamItemReader();
@Before
public void setUp() {
reader.setName("foo");
}
@Test
public void testJumpToItem() throws Exception {
reader.jumpToItem(2);
assertEquals(2, reader.getCurrentItemCount());
reader.read();
assertEquals(3, reader.getCurrentItemCount());
}
@Test
public void testGetCurrentItemCount() throws Exception {
assertEquals(0, reader.getCurrentItemCount());
reader.read();
assertEquals(1, reader.getCurrentItemCount());
}
@Test
public void testClose() {
reader.close();
assertTrue(reader.closeCalled);
}
@Test(expected=IllegalArgumentException.class)
public void testOpenWithoutName() {
reader = new ItemCountingItemStreamItemReader();
reader.open(new ExecutionContext());
assertFalse(reader.openCalled);
}
@Test
public void testOpen() {
reader.open(new ExecutionContext());
assertTrue(reader.openCalled);
}
@Test
public void testReadToEnd() throws Exception {
reader.read();
reader.read();
reader.read();
assertNull(reader.read());
}
@Test
public void testUpdate() throws Exception {
reader.read();
ExecutionContext context = new ExecutionContext();
reader.update(context);
assertEquals(1, context.size());
assertEquals(1, context.getInt("foo.read.count"));
}
@Test
public void testSetName() throws Exception {
reader.setName("bar");
reader.read();
ExecutionContext context = new ExecutionContext();
reader.update(context);
assertEquals(1, context.getInt("bar.read.count"));
}
@Test
public void testSetSaveState() throws Exception {
reader.read();
ExecutionContext context = new ExecutionContext();
reader.update(context);
assertEquals(1, context.size());
}
@Test
public void testReadToEndWithMax() throws Exception {
ExecutionContext context = new ExecutionContext();
context.putInt("foo.read.count.max", 1);
reader.open(context);
reader.read();
assertNull(reader.read());
}
@Test
public void testUpdateWithMax() throws Exception {
ExecutionContext context = new ExecutionContext();
context.putInt("foo.read.count.max", 1);
reader.open(context);
reader.update(context);
assertEquals(2, context.size());
}
private static class ItemCountingItemStreamItemReader extends AbstractItemCountingItemStreamItemReader<String> {
private boolean closeCalled = false;
private boolean openCalled = false;
private Iterator<String> items = Arrays.asList("a", "b", "c").iterator();
@Override
protected void doClose() throws Exception {
closeCalled = true;
}
@Override
protected void doOpen() throws Exception {
openCalled = true;
}
@Override
protected String doRead() throws Exception {
if (!items.hasNext()) {
return null;
}
return items.next();
}
}
}