Eclipse - When I create a JUnit Suite, the list of test classes is empty. Why?

Question

I have a package with 4 test classes. I want to make a JUnit Test Suite. So in Eclipse, I right click my package and do New > Other > JUnit Test Suite

The wizard has a warning that, "Warning: No test classes selected" and the list of Test Classes to include in suite: is empty.

I'm not sure why. I have several *Test.java classes with public methods annotated with @Test. I created these through the JUnit Test Case wizard...

I saw some code on other Stack Overflow answers that I could use to create a Test Suite, but why isn't it working in the IDE?

Should I even bother with a Test Suite? It seems like I can just right click the package and Run As > JUnit Test.

Answer 1

Did you select the right package in the New -> Other > JUnit Test Suite menu ? By selecting a package with the "Browse..." button, you should see your test classes.

You can run all the tests directly with Run As > JUnit Test on the project but if you have many test classes it is recommended to use a Test Suite to regroup them (ex: slower tests, tests for a certain part of the program, etc.).

Take a look at this post to learn more about JUnit tests grouping.

Answer 2

Yeah, don't bother with Suites.

You can select the project and run it as a junit test. Eclipse will find all the tests and run them

Answer 3

Same happened to me and the explanation is quite simple: you've written your tests using JUnit Jupiter.

However, JUnit Test Suite Wizard let's you pick only these 2 types of suites: JUnit3 or JUnit4.

Refactoring your tests to comply JUnit3 or JUnit4 will make them visible in JUnit Test Suite wizard.