What is the difference between the org.junit package and the junit.framework package?

Question

Whenever I use a Junit assert in my code, my IDE (Intellij IDEA 12) politely offers to static-import it for me:

import static junit.framework.Assert.assertTrue;

However, it always gives me the choice of importing either the "org.junit" version or the "junit.framework" version:

import static org.junit.Assert.assertTrue;

I can't find a clear answer online about what the difference is between these two packages - is there a difference? If so, what is it? They both come out of exactly the same Junit4 jar, so what's going on?

You can always download the source jar as well and debug into the method code (assertTrue) to find out which package it is using. — yousafsajjad
– yousafsajjad, Commented Sep 27, 2013 at 17:59
possible duplicate of differences between 2 JUnit Assert classes — Joe
– Joe, Commented Sep 28, 2013 at 7:08

Sotirios Delimanolis · Accepted Answer · 2013-09-27 17:40:59Z

15

org.junit.* is JUnit 4+. The other is previous versions.

There's backwards compatibility, so junit.framework.* is included in junit-4.x.jar.

answered Sep 27, 2013 at 17:40

Sotirios Delimanolis

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6 Comments

Edmund Over a year ago

So which should be used?

Sotirios Delimanolis Over a year ago

@Edmund If you have access to the newer version, obviously that one.

powder366 Over a year ago

Why are they both still in the same jar file 4.9?

Sotirios Delimanolis Over a year ago

@powder366 As mentioned in the second paragraph, for backwards compatibility. You can now add the new jar and start using new features, while the old ones still work.

powder366 Over a year ago

OK. I think they should remove it. Provide a jar for the old library (or the other way around). Now it's to easy to pick the wrong...

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