/*
* Copyright 2008-2010 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.sample.iosample;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.util.ArrayList;
import java.util.List;
import org.junit.Test;
import org.springframework.batch.core.BatchStatus;
import org.springframework.batch.core.JobExecution;
import org.springframework.batch.core.JobParameters;
import org.springframework.batch.core.StepExecution;
import org.springframework.batch.item.ExecutionContext;
import org.springframework.batch.item.ItemReader;
import org.springframework.batch.item.ItemStream;
import org.springframework.batch.sample.domain.trade.CustomerCredit;
import org.springframework.batch.sample.domain.trade.internal.CustomerCreditIncreaseProcessor;
import org.springframework.batch.test.JobLauncherTestUtils;
import org.springframework.batch.test.MetaDataInstanceFactory;
import org.springframework.batch.test.StepScopeTestExecutionListener;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.TestExecutionListeners;
import org.springframework.test.context.support.DependencyInjectionTestExecutionListener;
/**
* Base class for IoSample tests that increase input customer credit by fixed
* amount. Assumes inputs and outputs are in the same format and uses the job's
* {@link ItemReader} to parse the outputs.
*
* @author Robert Kasanicky
*/
@ContextConfiguration(locations = { "/simple-job-launcher-context.xml", "/job-runner-context.xml",
"/jobs/ioSampleJob.xml" })
@TestExecutionListeners( { DependencyInjectionTestExecutionListener.class, StepScopeTestExecutionListener.class })
public abstract class AbstractIoSampleTests {
@Autowired
private JobLauncherTestUtils jobLauncherTestUtils;
@Autowired
private ItemReader<CustomerCredit> reader;
/**
* Check the resulting credits correspond to inputs increased by fixed
* amount.
*/
@Test
public void testUpdateCredit() throws Exception {
open(reader);
List<CustomerCredit> inputs = getCredits(reader);
close(reader);
JobExecution jobExecution = jobLauncherTestUtils.launchJob(getUniqueJobParameters());
assertEquals(BatchStatus.COMPLETED, jobExecution.getStatus());
pointReaderToOutput(reader);
open(reader);
List<CustomerCredit> outputs = getCredits(reader);
close(reader);
assertEquals(inputs.size(), outputs.size());
int itemCount = inputs.size();
assertTrue(itemCount > 0);
for (int i = 0; i < itemCount; i++) {
assertEquals(inputs.get(i).getCredit().add(CustomerCreditIncreaseProcessor.FIXED_AMOUNT).intValue(),
outputs.get(i).getCredit().intValue());
}
}
protected JobParameters getUniqueJobParameters() {
return jobLauncherTestUtils.getUniqueJobParameters();
}
/**
* Configure the reader to read outputs (if necessary). Required for
* file-to-file jobs jobs, usually no-op for database jobs where inputs are
* updated (rather than outputs created).
*/
protected abstract void pointReaderToOutput(ItemReader<CustomerCredit> reader);
/**
* Read all credits using the provided reader.
*/
private List<CustomerCredit> getCredits(ItemReader<CustomerCredit> reader) throws Exception {
CustomerCredit credit;
List<CustomerCredit> result = new ArrayList<CustomerCredit>();
while ((credit = reader.read()) != null) {
result.add(credit);
}
return result;
}
/**
* Open the reader if applicable.
*/
private void open(ItemReader<?> reader) {
if (reader instanceof ItemStream) {
((ItemStream) reader).open(new ExecutionContext());
}
}
/**
* Close the reader if applicable.
*/
private void close(ItemReader<?> reader) {
if (reader instanceof ItemStream) {
((ItemStream) reader).close();
}
}
/**
* Create a {@link StepExecution} that can be used to satisfy step scoped
* dependencies in the test itself (not in the job it launches).
*
* @return a {@link StepExecution}
*/
protected StepExecution getStepExecution() {
return MetaDataInstanceFactory.createStepExecution(getUniqueJobParameters());
}
}