Artifact[] artifacts = pluginHelper.getAvailableArtifacts(ArtifactType.DATA_STORE);
        assertNotNull(artifacts);
        assertTrue(artifacts.length > 0);
    }

    public void test_getAvailableArtifacts_exception() {
        PluginHelper errorHelper = new PluginHelper() {
            @Override
            protected String[] getRepositories() {
                return new String[] { "invalid-repo" };
            }