--- jsr166/src/test/tck/TreeMapTest.java	2011/11/26 05:42:14	1.23
+++ jsr166/src/test/tck/TreeMapTest.java	2019/09/29 20:40:48	1.35
@@ -4,19 +4,40 @@
  * http://creativecommons.org/publicdomain/zero/1.0/
  */
 
-import junit.framework.*;
-import java.util.*;
+import java.util.Arrays;
+import java.util.BitSet;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.NavigableMap;
+import java.util.NavigableSet;
+import java.util.NoSuchElementException;
+import java.util.Random;
+import java.util.Set;
+import java.util.TreeMap;
+
+import junit.framework.Test;
 
 public class TreeMapTest extends JSR166TestCase {
     public static void main(String[] args) {
-        junit.textui.TestRunner.run(suite());
+        main(suite(), args);
     }
     public static Test suite() {
-        return new TestSuite(TreeMapTest.class);
+        class Implementation implements MapImplementation {
+            public Class<?> klazz() { return TreeMap.class; }
+            public Map emptyMap() { return new TreeMap(); }
+            public boolean isConcurrent() { return false; }
+            public boolean permitsNullKeys() { return false; }
+            public boolean permitsNullValues() { return true; }
+            public boolean supportsSetValue() { return true; }
+        }
+        return newTestSuite(
+            TreeMapTest.class,
+            MapTest.testSuite(new Implementation()));
     }
 
     /**
-     * Create a map from Integers 1-5 to Strings "A"-"E".
+     * Returns a new map from Integers 1-5 to Strings "A"-"E".
      */
     private static TreeMap map5() {
         TreeMap map = new TreeMap();
@@ -41,7 +62,7 @@ public class TreeMapTest extends JSR166T
     }
 
     /**
-     *
+     * copy constructor creates map equal to source map
      */
     public void testConstructFromSorted() {
         TreeMap map = map5();
@@ -563,8 +584,8 @@ public class TreeMapTest extends JSR166T
      * get(null) of nonempty map throws NPE
      */
     public void testGet_NullPointerException() {
+        TreeMap c = map5();
         try {
-            TreeMap c = map5();
             c.get(null);
             shouldThrow();
         } catch (NullPointerException success) {}
@@ -574,8 +595,8 @@ public class TreeMapTest extends JSR166T
      * containsKey(null) of nonempty map throws NPE
      */
     public void testContainsKey_NullPointerException() {
+        TreeMap c = map5();
         try {
-            TreeMap c = map5();
             c.containsKey(null);
             shouldThrow();
         } catch (NullPointerException success) {}
@@ -585,22 +606,22 @@ public class TreeMapTest extends JSR166T
      * remove(null) throws NPE for nonempty map
      */
     public void testRemove1_NullPointerException() {
+        TreeMap c = new TreeMap();
+        c.put("sadsdf", "asdads");
         try {
-            TreeMap c = new TreeMap();
-            c.put("sadsdf", "asdads");
             c.remove(null);
             shouldThrow();
         } catch (NullPointerException success) {}
     }
 
     /**
-     * A deserialized map equals original
+     * A deserialized/reserialized map equals original
      */
     public void testSerialization() throws Exception {
         NavigableMap x = map5();
         NavigableMap y = serialClone(x);
 
-        assertTrue(x != y);
+        assertNotSame(x, y);
         assertEquals(x.size(), y.size());
         assertEquals(x.toString(), y.toString());
         assertEquals(x, y);
@@ -790,7 +811,7 @@ public class TreeMapTest extends JSR166T
 
     static NavigableMap<Integer, Integer> newMap(Class cl) throws Exception {
         NavigableMap<Integer, Integer> result
-            = (NavigableMap<Integer, Integer>) cl.newInstance();
+            = (NavigableMap<Integer, Integer>) cl.getConstructor().newInstance();
         assertEquals(0, result.size());
         assertFalse(result.keySet().iterator().hasNext());
         return result;
@@ -823,7 +844,7 @@ public class TreeMapTest extends JSR166T
         // Add entries till we're back to original size
         while (map.size() < size) {
             int key = min + rnd.nextInt(rangeSize);
-            assertTrue(key >= min && key<= max);
+            assertTrue(key >= min && key <= max);
             put(map, key);
         }
     }
@@ -848,7 +869,7 @@ public class TreeMapTest extends JSR166T
         // Add entries till we're back to original size
         while (map.size() < size) {
             int key = min - 5 + rnd.nextInt(rangeSize + 10);
-            if (key >= min && key<= max) {
+            if (key >= min && key <= max) {
                 put(map, key);
             } else {
                 try {