    @Test
    public void returnNoVersion_WhenDataStoreHasNoData_AndCacheIsNotUsed() throws Exception {

        testee = new ZkNodeCacheWrapper(client, "/test", null);
        doThrow(new DataSourceConnectorException()).when(client).getNodeVersion(anyString());

        int result = testee.getCurrentDataVersion();

        Assert.assertEquals(NO_MODEL_NODE_VERSION, result);
    }