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25 package test.java.time.chrono;
26 
27 import java.time.Duration;
28 import java.time.chrono.Chronology;
29 import java.time.chrono.HijrahChronology;
30 import java.time.chrono.HijrahDate;
31 import java.time.temporal.ChronoUnit;
32 import java.util.Set;
33 
34 import org.testng.annotations.Test;
35 
36 /**
37  * Test the speed of initializing all calendars.
38  */
39 public class TestChronologyPerf {
40 
41     @Test
test_chronologyGetAvailablePerf()42     public void test_chronologyGetAvailablePerf() {
43         long start = System.nanoTime();
44         Set<Chronology> chronos = Chronology.getAvailableChronologies();
45         long end = System.nanoTime();
46         Duration d = Duration.of(end - start, ChronoUnit.NANOS);
47         System.out.printf(" Cold Duration of Chronology.getAvailableChronologies(): %s%n", d);
48 
49         start = System.nanoTime();
50         chronos = Chronology.getAvailableChronologies();
51         end = System.nanoTime();
52         d = Duration.of(end - start, ChronoUnit.NANOS);
53         System.out.printf(" Warm Duration of Chronology.getAvailableChronologies(): %s%n", d);
54 
55         start = System.nanoTime();
56         HijrahChronology.INSTANCE.date(1434, 1, 1);
57         end = System.nanoTime();
58         d = Duration.of(end - start, ChronoUnit.NANOS);
59         System.out.printf(" Warm Duration of HijrahDate.date(1434, 1, 1): %s%n", d);
60     }
61 
62 }
63