<exclusion> on <dependency> with <type>test-jar</type> doesn't work in maven 3

There appears to be a regression in maven 3 that breaks test-jar dependency exclusions. I've attached a simple example to reproduce this. There are two projects: foo and bar. Project foo produces a test-jar artifact. Project bar depends on foo's test-jar but excludes a dependency on junit. In maven 2, a dependency:list shows that junit has successfully been excluded. In maven 3, a dependency:list shows that junit was not successfully excluded.

To reproduce, download the maven-testcase.tar.gz attachment and run:

$ tar xzvf maven-testcase.tar.gz
$ cd maven-testcase/foo
$ mvn2 install
$ cd ../bar
$ mvn2 dependency:list
...
[INFO] The following files have been resolved:
[INFO]    org.apache.maven:foo:test-jar:tests:1.0:test
...
$ mvn3 dependency:list
...
[INFO] The following files have been resolved:
[INFO]    junit:junit:jar:4.8.1:test
[INFO]    org.apache.maven:foo:test-jar:tests:1.0:test
...