changeset 49578:0c3e252cea44 jdk-11+9

8197418: Move java/util/RandomAccess/ tests into OpenJDK Reviewed-by: psandoz
author xyin
date Thu, 12 Apr 2018 10:19:31 +0800
parents faf02d65df7d
children fce4252d5227
files test/jdk/java/util/RandomAccess/Basic.java
diffstat 1 files changed, 131 insertions(+), 0 deletions(-) [+]
line wrap: on
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--- /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);
+        }
+    }
+}