How to use

open

method

in

org.springframework.batch.core.step.item.ChunkMonitor

@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 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());
}