Java 在 Spring-Batch 中测试作业流程的最佳方法是什么？
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What is the best way to test job flow in Spring-Batch?
提问by Jon Bristow
I've got a complicated batch application, and I want to test that my assumptions about flow are correct.
我有一个复杂的批处理应用程序，我想测试我对流的假设是否正确。
Here's a much simplified version of what I'm working with:
这是我正在使用的简化版本：
<beans>
<batch:job id="job1">
<batch:step id="step1" next="step2">
<batch:tasklet ref="someTask1"/>
</batch:step>
<batch:step id="step2.master">
<batch:partition partitioner="step2Partitioner"
step="step2" />
<batch:next on="*" to="step3" />
<batch:next on="FAILED" to="step4" />
</batch:step>
<batch:step id="step3" next="step3">
<batch:tasklet ref="someTask1"/>
</batch:step>
<batch:step id="step4" next="step4">
<batch:tasklet ref="someTask1"/>
</batch:step>
</batch:job>
<batch:job id="job2">
<batch:step id="failingStep">
<batch:tasklet ref="failingTasklet"/>
</batch:step>
</batch:job>
<bean id="step2Partitioner" class="org.springframework.batch.core.partition.support.MultiResourcePartitioner" scope="step">
<property name="resources" value="file:${file.test.resources}/*" />
</bean>
<bean id="step2" class="org.springframework.batch.core.step.job.JobStep">
<property name="job" ref="job2" />
<property name="jobLauncher" ref="jobLauncher" />
<property name="jobRepository" ref="jobRepository" />
</bean>
</beans>
Job1 is the job I want to test. I really only want to test the transition of step2.master to step3 or step4. I don't want to test step1 at all...
Job1 是我要测试的工作。我真的只想测试 step2.master 到 step3 或 step4 的过渡。我根本不想测试 step1...
However, I want to keep Job1's specification intact, since this test is testing the configuration, not the underlying actions. I already have acceptance tests to test end-to-end stuff. This example is so I can write targeted tests for small variations without creating seperate end-to-end tests for each edge case.
但是，我想保持 Job1 的规范不变，因为这个测试是测试配置，而不是底层操作。我已经有验收测试来测试端到端的东西。这个例子让我可以为小的变化编写有针对性的测试，而无需为每个边缘情况创建单独的端到端测试。
What I want to test is that when the job inside step2 fails, step2.master will forward me on to step 4 and not step 3. Is there a good way to test this?
我要测试的是，当 step2 中的作业失败时，step2.master 会将我转到第 4 步而不是第 3 步。有没有好的方法来测试这个？
采纳答案by esmiralha
You can replace step2 with a mock implementation that always fail and use a StepExecutionListener to check whether or not step3 and step4 were called.
您可以将 step2 替换为始终失败的模拟实现，并使用 StepExecutionListener 检查是否调用了 step3 和 step4。
There are good examples here: http://static.springsource.org/spring-batch/reference/html/testing.html#endToEndTesting
这里有很好的例子：http: //static.springsource.org/spring-batch/reference/html/testing.html#endToEndTesting
回答by Denis
You can test every step separately. Example:
您可以单独测试每个步骤。例子：
JobLauncherTestUtil jobLauncherTestUtil = new JobLauncherTestUtil();
jobLauncherTestUtil.setJobLauncher(jobLauncher);
jobLauncherTestUtil.setJob(job);
jobLauncherTestUtil.setJobRepository(jobRepository);
Map<String, JobParameter> params = Maps.newHashMap();
//determine job params here:
params.put(....);
JobParameters jobParams = new JobParameters(params);
ExecutionContext context = new ExecutionContext();
//put something to job context, if you need.
context.put(...);
JobExecution jobExecution = jobLauncherTestUtil.launchStep("stepId",jobParams,context);
Assert.assertEquals("Step stepId failed", ExitStatus.COMPLETED, execution.getExitStatus())
I hope it helps.
我希望它有帮助。
