Junit4: how to create test suite dynamically [duplicate]

Question

I have huge set of JUnits in my projects. Out of which, I would like to execute certain set by looking up the classes from a property file.

Prior to JUnit 4:

public class TestSuite { public static Test suite() { TestSuite suite = new TestSuite(); Class [] array = readFromPropertyFile(); for (Class tempClz : array) { suite.addTestSuite(tempClz); } } }

However in Junit4, I'm forced to annotate the classes at compile time as follows:

@RunWith(Suite.class) @Suite.SuiteClasses({ Test1.class, Test2.class }) public class TestSuite { }

I cannot, switch back to Junit 3.x because, all the test classes are no more extending TestCase meaning Test1.class is not of type Class<? extends TestCase>

Is there a way to dynamically configure the testsuite in this case ?

Is JUnit4 is not compatible to the earlier approach, it should be. — Juned Ahsan
– Juned Ahsan, Commented Jul 3, 2013 at 6:28
as I said, suite.addTestSuite(tempClz); expects tempClz to be Class<? extends TestCase> where I get an error (compile time). — Chris
– Chris, Commented Jul 3, 2013 at 6:30
I had the same issue, see my answer here stackoverflow.com/a/42423367/2267723 — Maher Abuthraa
– Maher Abuthraa, Commented Feb 23, 2017 at 18:22

Jeanne Boyarsky · Accepted Answer · 2013-07-03 23:22:54Z

The cpsuite project uses a custom annotation to determine the tests to run at runtime based on patterns. This isn't what you want, but it is a good start. You can take the source code for it and replace the "find tests" part with reading from your property file.

Note that the annotation/code is different for different versions of JUnit 4.X. If you are still on JUnit 4.4 or below, you'll need the older one.

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