@Test
public void test_getPoliciesAsArray_string() throws Exception {

    ObjectMapper objMapper = new ObjectMapper();
    String jsonStr = "{\"id\":\"1JRRXfKHYuN2zbl1gkRM12zA\",\"last_renewal_time\":null,\"renewable\":false,\"policies\":\"approle_normal_user\", \"identity_policies\":[\"default2\"], \"creation_ttl\":1800000,\"username\":\"normaluser\"}";
    String[] expectedPolicies = {"approle_normal_user"};
    String[] policies = commonUtils.getPoliciesAsArray(objMapper, jsonStr);
}