@Test
public void testZeroEffitiveData(){

	Row[] rows =
		new Row[] {
			Row.of("prefix0", null)
		};
	Map<Object, Integer> map = new HashMap<>();
	map.put("prefix0", 2);
	map.put("prefix1", 1);
	map.put("prefix2", 0);
	MultiMetricsSummary metrics = EvaluationUtil.getMultiClassMetrics(Arrays.asList(rows), Tuple2.of(map, new Object[]{"prefix2", "prefix1", "prefix0"}));
	Assert.assertNull(metrics);
}