@Test
public void reportsHistogramValues() throws Exception {

    final Histogram histogram = mock(Histogram.class);
    when(histogram.getCount()).thenReturn(1L);
    final Snapshot snapshot = mock(Snapshot.class);
    when(snapshot.getMax()).thenReturn(2L);
    when(snapshot.getMean()).thenReturn(3.0);
    when(snapshot.getMin()).thenReturn(4L);
    when(snapshot.getStdDev()).thenReturn(5.0);
    when(snapshot.getMedian()).thenReturn(6.0);
    when(snapshot.get75thPercentile()).thenReturn(7.0);
    when(snapshot.get95thPercentile()).thenReturn(8.0);
    when(snapshot.get98thPercentile()).thenReturn(9.0);
    when(snapshot.get99thPercentile()).thenReturn(10.0);
    when(snapshot.get999thPercentile()).thenReturn(11.0);
    when(histogram.getSnapshot()).thenReturn(snapshot);
    reporter.report(map(),
            map(),
            map("test.histogram", histogram),
            map(),
            map());
    assertThat(fileContents("test.histogram.csv"))
            .isEqualTo(csv(
                    "t,count,max,mean,min,stddev,p50,p75,p95,p98,p99,p999",
                    "19910191,1,2,3.000000,4,5.000000,6.000000,7.000000,8.000000,9.000000,10.000000,11.000000"
            ));
}