1 package org.junit.runner.manipulation; 2 3 import java.util.Comparator; 4 5 import org.junit.runner.Description; 6 7 /** 8 * A <code>Sorter</code> orders tests. In general you will not need 9 * to use a <code>Sorter</code> directly. Instead, use {@link org.junit.runner.Request#sortWith(Comparator)}. 10 * 11 * 12 */ 13 public class Sorter implements Comparator<Description> { 14 /** 15 * NULL is a <code>Sorter</code> that leaves elements in an undefined order 16 */ 17 public static Sorter NULL= new Sorter(new Comparator<Description>() { 18 public int compare(Description o1, Description o2) { 19 return 0; 20 }}); 21 private final Comparator<Description> fComparator; 22 23 /** 24 * Creates a <code>Sorter</code> that uses <code>comparator</code> 25 * to sort tests 26 * @param comparator the {@link Comparator} to use when sorting tests 27 */ 28 public Sorter(Comparator<Description> comparator) { 29 fComparator= comparator; 30 } 31 32 /** 33 * Sorts the test in <code>runner</code> using <code>comparator</code> 34 * @param object 35 */ 36 public void apply(Object object) { 37 if (object instanceof Sortable) { 38 Sortable sortable = (Sortable) object; 39 sortable.sort(this); 40 } 41 } 42 43 public int compare(Description o1, Description o2) { 44 return fComparator.compare(o1, o2); 45 } 46 } 47
