@Test
public void testEvaluateExpression() throws Exception {

    Cluster cluster = new Cluster();
    cluster.setName("name");
    cluster.setColo("colo");
    cluster.setProperties(new Properties());
    Property prop = new Property();
    prop.setName("pname");
    prop.setValue("pvalue");
    cluster.getProperties().getProperties().add(prop);
    
    Assert.assertEquals(FeedHelper.evaluateClusterExp(cluster, "${cluster.colo}/*/US"), "colo/*/US");
    Assert.assertEquals(FeedHelper.evaluateClusterExp(cluster, "${cluster.name}/*/${cluster.pname}"), "name/*/pvalue");
    Assert.assertEquals(FeedHelper.evaluateClusterExp(cluster, "IN"), "IN");
}