1 files changed, 46 insertions, 0 deletions
diff --git a/src/org/junit/runner/manipulation/Sorter.java b/src/org/junit/runner/manipulation/Sorter.java
new file mode 100644
index 0000000..242df14
--- /dev/null
+++ b/src/org/junit/runner/manipulation/Sorter.java
@@ -0,0 +1,46 @@
+package org.junit.runner.manipulation;
+
+import java.util.Comparator;
+
+import org.junit.runner.Description;
+
+/**
+ * A <code>Sorter</code> orders tests. In general you will not need
+ * to use a <code>Sorter</code> directly. Instead, use {@link org.junit.runner.Request#sortWith(Comparator)}.
+ * 
+ * 
+ */
+public class Sorter implements Comparator<Description> {
+	/**
+	 * NULL is a <code>Sorter</code> that leaves elements in an undefined order
+	 */
+	public static Sorter NULL= new Sorter(new Comparator<Description>() {
+		public int compare(Description o1, Description o2) {
+			return 0;
+		}});
+	private final Comparator<Description> fComparator;
+
+	/**
+	 * Creates a <code>Sorter</code> that uses <code>comparator</code>
+	 * to sort tests
+	 * @param comparator the {@link Comparator} to use when sorting tests
+	 */
+	public Sorter(Comparator<Description> comparator) {
+		fComparator= comparator;
+	}
+
+	/**
+	 * Sorts the test in <code>runner</code> using <code>comparator</code>
+	 * @param object
+	 */
+	public void apply(Object object) {
+		if (object instanceof Sortable) {
+			Sortable sortable = (Sortable) object;
+			sortable.sort(this);
+		}
+	}
+
+	public int compare(Description o1, Description o2) {
+		return fComparator.compare(o1, o2);
+	}
+}