--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/util/Calendar/CalendarTestScripts/JapaneseRollDayOfWeekTestGenerator.java	Thu Aug 09 15:42:48 2018 +0800
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2007, 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.
+ */
+
+import java.io.PrintWriter;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.GregorianCalendar;
+import java.util.Locale;
+import static java.util.Calendar.*;
+
+
+public class JapaneseRollDayOfWeekTestGenerator {
+    private static final String[] ERAS = {
+        "BeforeMeiji", "Meiji", "Taisho", "Showa", "Heisei"
+    };
+
+    private static final String[] DAYOFWEEK = {
+        null, "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
+    };
+
+    private static final int[] DAYOFMONTH = {
+        25, 26, 27, 28, 29, 30, 31,
+         1,  2,  3,  4,  5,  6,  7
+    };
+
+    private static final int DOM_BASE = 7;
+
+    //Usage: JapaneseRollDayOfWeekTestGenerator will generate test script into
+    // file rolldow.cts.
+    public static void generateTestScript(String[] args) throws Exception{
+        Locale.setDefault(Locale.ROOT);
+
+        //This test generator assumes that Heisei has (nYears - 1) or more years.
+        int nYears = (args.length == 1) ?
+                Math.max(3, Math.min(Integer.parseInt(args[0]), 40)) : 28;
+
+        // Start from Showa 63
+        int era = 3;
+        int year = 63;
+        Path testPath = Paths.get(System.getProperty("test.classes"));
+        String scFileName = testPath + "/rolldow.cts";
+
+        try (PrintWriter out = new PrintWriter(scFileName)){
+            out.println("locale ja JP JP\n" + "new instance jcal\n" + "use jcal");
+            for (int y = 0; y < nYears; y++) {
+                out.printf("\nTest %s %d\n", ERAS[era], year);
+                for (int fdw = SUNDAY; fdw <= SATURDAY; fdw++) {
+                    int endFdw = fdw + 6;
+                    if (endFdw > SATURDAY) {
+                        endFdw -= 7;
+                    }
+                    for (int mdifw = 1; mdifw <= 7; mdifw++) {
+                        int domIndex = DOM_BASE;
+                        out.println(" clear all");
+                        out.printf(" set FirstDayOfWeek %s\n", DAYOFWEEK[fdw]);
+                        out.printf(" set MinimalDaysInFirstWeek %d\n", mdifw);
+                        out.printf(" set date %s %d Jan 1\n", ERAS[era], year);
+                        out.println(" get week_of_year\n" + " assign $result $woy");
+                        out.println(" get day_of_week\n" + " assign $result $doy");
+
+                        int gyear = year + (year >= 60 ? 1925 : 1988);
+                        int next = new GregorianCalendar(gyear, JANUARY, 1).get(DAY_OF_WEEK);
+                        for (int i = 0; i < 10; i++) {
+
+                            out.println(" roll day_of_week 1");
+                            next = nextFdw(next, fdw, endFdw);
+                            if (next == fdw) {
+                                domIndex -= 6;
+                            } else {
+                                domIndex++;
+                            }
+                            int dom = DAYOFMONTH[domIndex];
+                            out.printf("\tcheck date %d %s %d%n", (dom >= 25) ? year - 1 : year,
+                                    (dom >= 25) ? "Dec" : "Jan", dom);
+                            out.println("\teval $doy + 1");
+                            out.println("\tassign $result $doy");
+                            out.println("\tassign Sun $doy if $doy > Sat");
+                            out.println("\tcheck day_of_week $doy");
+                            out.println("\tcheck week_of_year $woy");
+                        }
+
+                        for (int i = 0; i < 10; i++) {
+                            out.println("\troll day_of_week -1");
+                            out.println("\teval $doy - 1");
+                            out.println("\tassign $result $doy");
+                            out.println("\tassign Sat $doy if $doy < Sun");
+                            out.println("\tcheck day_of_week $doy");
+                            out.println("\tcheck week_of_year $woy");
+                        }
+                    }
+                }
+
+                if (year == 64 && era == 3) {
+                    era++;
+                    year = 2;
+                } else {
+                    year++;
+                }
+            }
+        }
+    }
+
+    private static int nextFdw(int x, int start, int end) {
+        if (x == end)
+            return start;
+        x++;
+        if (x > SATURDAY)
+            x = SUNDAY;
+        return x;
+    }
+}