--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/lang/String/Chars.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2015, 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 8054307
+    @summary test chars() and codePoints()
+*/
+
+import java.util.Arrays;
+import java.util.Random;
+
+public class Chars {
+
+    public static void main(String[] args) {
+        Random r = new Random();
+        for (int i = 0; i < 10; i++) {
+            int n = 100 + r.nextInt(100);
+            char[] cc = new char[n];
+            int[]  ccExp = new int[n];
+            int[]  cpExp = new int[n];
+            // latin1
+            for (int j = 0; j < n; j++) {
+                cc[j] = (char)(ccExp[j] = cpExp[j] = r.nextInt(0x80));
+            }
+            testChars(cc, ccExp);
+            testCPs(cc, cpExp);
+
+            // bmp without surrogates
+            for (int j = 0; j < n; j++) {
+                cc[j] = (char)(ccExp[j] = cpExp[j] = r.nextInt(0x8000));
+            }
+            testChars(cc, ccExp);
+            testCPs(cc, cpExp);
+
+            // bmp with surrogates
+            int k = 0;
+            for (int j = 0; j < n; j++) {
+                if (j % 9 ==  5 && j + 1 < n) {
+                    int cp = 0x10000 + r.nextInt(2000);
+                    cpExp[k++] = cp;
+                    Character.toChars(cp, cc, j);
+                    ccExp[j] = cc[j];
+                    ccExp[j + 1] = cc[j + 1];
+                    j++;
+                } else {
+                    cc[j] = (char)(ccExp[j] = cpExp[k++] = r.nextInt(0x8000));
+                }
+            }
+            cpExp = Arrays.copyOf(cpExp, k);
+            testChars(cc, ccExp);
+            testCPs(cc, cpExp);
+        }
+    }
+
+    static void testChars(char[] cc, int[] expected) {
+        String str = new String(cc);
+        if (!Arrays.equals(expected, str.chars().toArray())) {
+            throw new RuntimeException("chars/codePoints() failed!");
+        }
+    }
+
+    static void testCPs(char[] cc, int[] expected) {
+        String str = new String(cc);
+        if (!Arrays.equals(expected, str.codePoints().toArray())) {
+            throw new RuntimeException("chars/codePoints() failed!");
+        }
+    }
+}