/**
* Test choosing the "closest" event to associate a product to based on the lat, lon, and
* eventTime values. This method creates a product with some lat, lon and time values then it
* creates 3 events whose parameters only differ slightly from the product. It then chooses the
* event whose Euclidean distance is lowest.
*
* @see #createEvent(BigDecimal, BigDecimal, Date)
* @see gov.usgs.earthquake.indexer.DefaultAssociator#chooseMostSimilar(ProductSummary, List)
*/
@Test
public void testChooseMostSimilar() {
Date d = new Date();
double lat = 10.0;
double lon = 10.0;
// Make a product with location and time
ProductSummary product = new ProductSummary();
product.setEventLatitude(new BigDecimal(lat));
product.setEventLongitude(new BigDecimal(lon));
product.setEventTime(d);
// Make 3 events with similar locations and times
Event e1 =
createEvent(
"test",
"1",
new BigDecimal(lat + 0.1),
new BigDecimal(lon + 0.1),
new Date(d.getTime() + 10));
Event e2 =
createEvent(
"test",
"2",
new BigDecimal(lat - 0.5),
new BigDecimal(lon),
new Date(d.getTime() + 50));
Event e3 = createEvent("test", "3", new BigDecimal(lat + 1), new BigDecimal(lon + 1), d);
// Now add the events to a list, and find the most similar
List<Event> events = new ArrayList<Event>();
events.add(e1);
events.add(e2);
events.add(e3);
// Calculate which event is most similar to the product
DefaultAssociator associator = new DefaultAssociator();
Event mostSimilar = associator.chooseMostSimilar(product, events);
Assert.assertEquals(e1, mostSimilar);
}
