Comments on: JUnit 4 – testing for exception, execution time and disabling a test

By: Veera

Veera — Mon, 18 Jan 2010 16:45:44 +0000

There are two ways to test a method which does not return anything. 1. As Junit FAQ says:

The method should have some side effect. i.e. it might alter some external files or data. In that scenario, it is better to test that external data to see the success of the method.

2. Use reflections to get the private variable, defined inside your method, in your JUnit test case and validate. Have a look at this article for more details: What’s the best way of unit testing private methods?

By: abhay

abhay — Mon, 18 Jan 2010 02:25:33 +0000

thanks for your reply, this makes sense for handling print statements, however the method to be tested also contains a local integer variable ‘q’ which is neither printed, nor returned nor its value saved in some variable that exists outside the function. any ideas on how i would access this variable that exists inside the function only. really appreciate the help

By: Veera

Veera — Mon, 18 Jan 2010 01:10:40 +0000

I don't think there is a easy way to do this. One solution I would suggest is: 1. Redirect your system.out.print messages to an external file, using System.setOut method. 2. From your JUnit read the output file and then parse to find the correct output pattern.

By: abhay

abhay — Sun, 17 Jan 2010 18:56:33 +0000

if my function does not return any value… it just sets the value of some (local to function) variable ‘q’, and generates System.out.println statements at the end, how do i JUnit test this method … how do i Junit test print statements and some variable internal to function