/*
* Copyright 2006-2013 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.core.step.item;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import org.junit.Before;
import org.junit.Test;
import org.springframework.batch.item.ExecutionContext;
import org.springframework.batch.item.ItemReader;
import org.springframework.batch.item.ItemStreamException;
import org.springframework.batch.item.ItemStreamSupport;
import org.springframework.batch.item.ParseException;
import org.springframework.batch.item.UnexpectedInputException;
/**
* @author Dave Syer
*
*/
public class ChunkMonitorTests {
private static final int CHUNK_SIZE = 5;
private ChunkMonitor monitor = new ChunkMonitor();
private int count = 0;
private boolean closed = false;
@Before
public void setUp() {
monitor.setItemReader(new ItemReader<String>() {
@Override
public String read() throws Exception, UnexpectedInputException, ParseException {
return "" + (count++);
}
});
monitor.registerItemStream(new ItemStreamSupport() {
@Override
public void close() {
super.close();
closed = true;
}
});
monitor.setChunkSize(CHUNK_SIZE);
}
@Test
public void testIncrementOffset() {
assertEquals(0, monitor.getOffset());
monitor.incrementOffset();
assertEquals(1, monitor.getOffset());
}
@Test
public void testResetOffsetManually() {
monitor.incrementOffset();
monitor.resetOffset();
assertEquals(0, monitor.getOffset());
}
@Test
public void testResetOffsetAutomatically() {
for (int i = 0; i < CHUNK_SIZE; i++) {
monitor.incrementOffset();
}
assertEquals(0, monitor.getOffset());
}
@Test
public void testClose() {
monitor.incrementOffset();
monitor.close();
assertTrue(closed);
assertEquals(0, monitor.getOffset());
}
@Test
public void testOpen() {
ExecutionContext executionContext = new ExecutionContext();
executionContext.putInt(ChunkMonitor.class.getName() + ".OFFSET", 2);
monitor.open(executionContext);
assertEquals(2, count);
assertEquals(0, monitor.getOffset());
}
@Test
public void testOpenWithNullReader() {
monitor.setItemReader(null);
ExecutionContext executionContext = new ExecutionContext();
monitor.open(executionContext);
assertEquals(0, monitor.getOffset());
}
@Test(expected = ItemStreamException.class)
public void testOpenWithErrorInReader() {
monitor.setItemReader(new ItemReader<String>() {
@Override
public String read() throws Exception, UnexpectedInputException, ParseException {
throw new IllegalStateException("Expected");
}
});
ExecutionContext executionContext = new ExecutionContext();
executionContext.putInt(ChunkMonitor.class.getName() + ".OFFSET", 2);
monitor.open(executionContext);
}
@Test
public void testUpdateOnBoundary() {
monitor.resetOffset();
ExecutionContext executionContext = new ExecutionContext();
monitor.update(executionContext);
assertEquals(0, executionContext.size());
executionContext.put(ChunkMonitor.class.getName() + ".OFFSET", 3);
monitor.update(executionContext);
assertEquals(0, executionContext.size());
}
@Test
public void testUpdateVanilla() {
monitor.incrementOffset();
ExecutionContext executionContext = new ExecutionContext();
monitor.update(executionContext);
assertEquals(1, executionContext.size());
}
@Test
public void testUpdateWithNoStream() throws Exception {
monitor = new ChunkMonitor();
monitor.setItemReader(new ItemReader<String>() {
@Override
public String read() throws Exception, UnexpectedInputException, ParseException {
return "" + (count++);
}
});
monitor.setChunkSize(CHUNK_SIZE);
monitor.incrementOffset();
ExecutionContext executionContext = new ExecutionContext();
monitor.update(executionContext);
assertEquals(0, executionContext.size());
}
}