This release's theme is Test-class and suite level Rules. The release notes are copied in part below, and can be read in full here.
Go ahead and download, or merely let maven do the work for you (as we are now directly releasing to sonatype's maven repository on the same day we release the jars).
Following this release, work on JUnit and related code will continue on three fronts:
- Bug fixes against existing functionality will be committed to the 4.9.1 branch.
- New core features will be committed on the 4.10 branch.
- We have created a new junit.contrib project to be a home to new experimental features, features that use additional dependencies, and features that are outside of JUnit's core mission. As a first example, Thomas Mueller has created assertthrows, a package that uses all kinds of JDK trickery to allow direct assertions like this:
List<String> emptyList = new ArrayList<String>(); assertThrows(emptyList).get(0);
JUnit 4.9 release notes (highlights)
ClassRule
The ClassRule annotation extends the idea of method-level Rules,
adding static fields that can affect the operation of a whole class. Any
subclass of ParentRunner, including the standard BlockJUnit4ClassRunner
and Suite classes, will support ClassRules.
For example, here is a test suite that connects to a server once before all the test classes run, and disconnects after they are finished:
@RunWith(Suite.class)
@SuiteClasses({A.class, B.class, C.class})
public class UsesExternalResource {
public static Server myServer= new Server();
@ClassRule
public static ExternalResource resource= new ExternalResource() {
@Override
protected void before() throws Throwable {
myServer.connect();
};
@Override
protected void after() {
myServer.disconnect();
};
};
}
TestRule
In JUnit 4.9, fields that can be annotated with either @Rule or @ClassRule
should be of type TestRule. The old MethodRule type, which only made sense
for method-level rules, will still work, but is deprecated.
Most built-in Rules have been moved to the new type already, in a way that
should be transparent to most users. TestWatchman has been deprecated,
and replaced by TestWatcher, which has the same functionality, but implements
the new type.
Maven support
Maven bundles have, in the past, been uploaded by kind volunteers. Starting with this release, the JUnit team is attempting to perform this task ourselves.
LICENSE checked in
The Common Public License that JUnit is released under is now included in the source repository.
