@Test
public void testGetPendingMembershipNotificationsTimestampUpdateFailed() {

    Mockito.when(mockObjStore.getConnection(true, true)).thenReturn(mockJdbcConn);
    Mockito.when(mockJdbcConn.updatePendingRoleMembersNotificationTimestamp(anyString(), anyLong(), anyInt())).thenReturn(false);
    ObjectStore saveStore = zms.dbService.store;
    zms.dbService.store = mockObjStore;
    Set<String> recipientsRes = zms.dbService.getPendingMembershipApproverRoles(0);
    assertNull(recipientsRes);
    zms.dbService.store = saveStore;
}