/** Tests the standard aggregation behavior */
@Test
public void testAggregation() {
AggregateSummaryStatistics aggregate = new AggregateSummaryStatistics();
SummaryStatistics setOneStats = aggregate.createContributingStatistics();
SummaryStatistics setTwoStats = aggregate.createContributingStatistics();
Assert.assertNotNull("The set one contributing stats are null", setOneStats);
Assert.assertNotNull("The set two contributing stats are null", setTwoStats);
Assert.assertNotSame("Contributing stats objects are the same", setOneStats, setTwoStats);
setOneStats.addValue(2);
setOneStats.addValue(3);
setOneStats.addValue(5);
setOneStats.addValue(7);
setOneStats.addValue(11);
Assert.assertEquals("Wrong number of set one values", 5, setOneStats.getN());
Assert.assertTrue(
"Wrong sum of set one values", Precision.equals(28.0, setOneStats.getSum(), 1));
setTwoStats.addValue(2);
setTwoStats.addValue(4);
setTwoStats.addValue(8);
Assert.assertEquals("Wrong number of set two values", 3, setTwoStats.getN());
Assert.assertTrue(
"Wrong sum of set two values", Precision.equals(14.0, setTwoStats.getSum(), 1));
Assert.assertEquals("Wrong number of aggregate values", 8, aggregate.getN());
Assert.assertTrue("Wrong aggregate sum", Precision.equals(42.0, aggregate.getSum(), 1));
}
