--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/util/RandomAccess/Basic.java Thu Apr 12 10:19:31 2018 +0800
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 4327164
+ * @summary Basic test for new RandomAccess interface
+ */
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Random;
+import java.util.RandomAccess;
+import java.util.Vector;
+
+public class Basic {
+ public static void main(String[] args) throws Exception {
+ List a0 = Arrays.asList(new String[] { "a", "b", "c" });
+ List a[] = { a0, new ArrayList(a0), new LinkedList(a0),
+ new Vector(a0) };
+
+ if (!(a[0] instanceof RandomAccess))
+ throw new Exception("Arrays.asList doesn't implement RandomAccess");
+ if (!(a[1] instanceof RandomAccess))
+ throw new Exception("ArrayList doesn't implement RandomAccess");
+ if (a[2] instanceof RandomAccess)
+ throw new Exception("LinkedList implements RandomAccess");
+ if (!(a[3] instanceof RandomAccess))
+ throw new Exception("Vector doesn't implement RandomAccess");
+
+ for (int i = 0; i < a.length; i++) {
+ List t = a[i];
+ List ut = Collections.unmodifiableList(t);
+ List st = Collections.synchronizedList(t);
+
+ boolean random = t instanceof RandomAccess;
+ if ((ut instanceof RandomAccess) != random)
+ throw new Exception(
+ "Unmodifiable fails to preserve RandomAccess: " + i);
+ if ((st instanceof RandomAccess) != random)
+ throw new Exception(
+ "Synchronized fails to preserve RandomAccess: " + i);
+
+ while (t.size() > 0) {
+ t = t.subList(0, t.size() - 1);
+ if ((t instanceof RandomAccess) != random)
+ throw new Exception(
+ "SubList fails to preserve RandomAccess: " + i
+ + ", " + t.size());
+
+ ut = ut.subList(0, ut.size() - 1);
+ if ((ut instanceof RandomAccess) != random)
+ throw new Exception(
+ "SubList(unmodifiable) fails to preserve RandomAccess: "
+ + i + ", " + ut.size());
+
+ st = st.subList(0, st.size() - 1);
+ if ((st instanceof RandomAccess) != random)
+ throw new Exception(
+ "SubList(synchronized) fails to preserve RandomAccess: "
+ + i + ", " + st.size());
+ }
+ }
+
+ // Test that shuffle works the same on random and sequential access
+ List al = new ArrayList();
+ for (int j = 0; j < 100; j++)
+ al.add(Integer.valueOf(2 * j));
+ List ll = new LinkedList(al);
+ Random r1 = new Random(666), r2 = new Random(666);
+ for (int i = 0; i < 100; i++) {
+ Collections.shuffle(al, r1);
+ Collections.shuffle(ll, r2);
+ if (!al.equals(ll))
+ throw new Exception("Shuffle failed: " + i);
+ }
+
+ // Test that fill works on random & sequential access
+ List gumbyParade = Collections.nCopies(100, "gumby");
+ Collections.fill(al, "gumby");
+ if (!al.equals(gumbyParade))
+ throw new Exception("ArrayList fill failed");
+ Collections.fill(ll, "gumby");
+ if (!ll.equals(gumbyParade))
+ throw new Exception("LinkedList fill failed");
+
+ // Test that copy works on random & sequential access
+ List pokeyParade = Collections.nCopies(100, "pokey");
+ Collections.copy(al, pokeyParade);
+ if (!al.equals(pokeyParade))
+ throw new Exception("ArrayList copy failed");
+ Collections.copy(ll, pokeyParade);
+ if (!ll.equals(pokeyParade))
+ throw new Exception("LinkedList copy failed");
+
+ // Test that binarySearch works the same on random & sequential access
+ al = new ArrayList();
+ for (int i = 0; i < 10000; i++)
+ al.add(Integer.valueOf(2 * i));
+ ll = new LinkedList(al);
+ for (int i = 0; i < 500; i++) {
+ Integer key = Integer.valueOf(r1.nextInt(20000));
+ if (Collections.binarySearch(al, key) != Collections
+ .binarySearch(ll, key))
+ throw new Exception("Binary search failed: " + i);
+ }
+ }
+}