@Override
      public List<ServiceComponentHost> answer() throws Throwable {
        String hostname = (String) EasyMock.getCurrentArguments()[0];
        if (hostname.equals("host2")) {
          return schsH2;
        } else {
          return schsH1;
        }
      }
Tests that forcing the host versions into
{@link RepositoryVersionState#INSTALLED}

@throws Exception
ambari-server/src/test/java/org/apache/ambari/server/controller/internal/ClusterStackVersionResourceProviderTest.java