public void testSingleUnchangedBundleMultipleVersions() throws Exception {

        Collection<ArtifactData> bundleData = m_backend.getBundleData(TARGET, VERSION1, VERSION1);

        assert bundleData.size() == 1 : "Expect one bundle, got " + bundleData.size();

        Iterator<ArtifactData> it = bundleData.iterator();

        while (it.hasNext()) {

            ArtifactData data = it.next();

            assert data.getSize() == 100 : "Bundle has no sensible size?! " + data.getSize();

            assert !data.hasChanged() : "The data should not have been changed.";

        }

    }