Unit Testing Scheduler job in java

Question

We have a cron based job in our application.

The job class is as follows:

       public class DailyUpdate implements Job {

        public void execute(JobExecutionContext context) throws JobExecutionException {
                SpringBeanAutowiringSupport.processInjectionBasedOnCurrentContext(this);

testMethod();

}
        private void testMethod()
        {
System.out.pritnln("Executed From scheduler");
        }
        }

How should we write unit test case to test Method testMethod()

I cannot call testMethod Directly without scheduler as it is private..Any suggestion how to write unit test cases for Scheduler

there are other questions around the same problem. the answer is that you should never need to test a private method. If you want to do it, you can use reflection — Marco Altieri, Mar 01 '16 at 16:51
http://stackoverflow.com/questions/34571/how-to-test-a-class-that-has-private-methods-fields-or-inner-classes — Marco Altieri, Mar 01 '16 at 16:52

score 1 · Accepted Answer · edited May 23 '17 at 12:15

In order to write a test you need to have an expected behavior so there is no point on testing a method that does nothing.

Now to your main problem. If you have somewhat of a legacy application, and you're not allowed to change the visibility of your methods, the best way to test private methods is to use reflection.

So you can use the following pattern

Method testMethod = DailyUpdate.getDeclaredMethod(testMethod, argClasses);
testMethod .setAccessible(true);
return testMethod.invoke(targetObject, argObjects);

see also this question how to test a class that has private methods fields or inner classes

score 0 · Answer 2 · edited May 23 '17 at 11:50

0

If you have the opportunity, I would suggest you to use PowerMock (instead of coding it by yourself). Here is a link explaining how to use it : How to mock private method for testing using PowerMock?

edited May 23 '17 at 11:50

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answered Mar 01 '16 at 17:03

Akah

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Unit Testing Scheduler job in java

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