@Test
public void testFillTransform_MetricWithEmptyDatapointsMap() {

	Transform fillTransform = new FillTransform();
	List<String> constants = new ArrayList<>();
	
	Metric m = new Metric("scope", "metric");
	
	constants.add("100s");
    constants.add("1s");
    constants.add("100.0");
    constants.add(System.currentTimeMillis() + "");
    constants.add("false");
    
    List<Metric> metrics = fillTransform.transform(null, Arrays.asList(m), constants);
	assertEquals(metrics.size(), 1);
}