@Test
public void testAverageBelowTransform() {

    Transform averageBelowTransform = new AverageBelowTransform();
    Map<Long, Double> datapoints1 = new HashMap<Long, Double>();
    datapoints1.put(1L, 1.0);
    datapoints1.put(2L, 2.0);
    datapoints1.put(3L, 3.0);
    datapoints1.put(4L, 4.0);
    Metric below = new Metric("below-scope", "below-metric");
    below.setDatapoints(datapoints1);
    Map<Long, Double> datapoints2 = new HashMap<Long, Double>();
    datapoints2.put(1L, 10.0);
    datapoints2.put(2L, 2.0);
    datapoints2.put(3L, 3.0);
    datapoints2.put(4L, 15.0);
    Metric above = new Metric("above-scope", "above-metric");
    above.setDatapoints(datapoints2);
    List<Metric> metrics = new ArrayList<Metric>();
    metrics.add(above);
    metrics.add(below);
    List<String> constants = new ArrayList<String>(1);
    constants.add("5");
    List<Metric> result = averageBelowTransform.transform(null, metrics, constants);
    assertEquals(result.size(), 1);
}