--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/util/Locale/bcp47u/spi/DateFormatSymbolsProviderTests.java	Wed Aug 01 09:33:56 2018 -0700
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 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 8208080
+ * @summary Tests DateFormatSymbols provider implementations
+ * @library provider
+ * @build provider/module-info provider/foo.DateFormatSymbolsProviderImpl
+ * @run main/othervm -Djava.locale.providers=SPI,CLDR DateFormatSymbolsProviderTests
+ */
+
+import java.text.DateFormatSymbols;
+import java.util.Locale;
+import java.util.Map;
+
+/**
+ * Test DateFormatSymbolsProvider SPI with BCP47 U extensions
+ */
+public class DateFormatSymbolsProviderTests {
+    private static final Map<Locale, String> data = Map.of(
+        Locale.forLanguageTag("en-AA"),                 "foo",
+        Locale.forLanguageTag("en-US-u-rg-aazzzz"),     "foo",
+        Locale.forLanguageTag("en-US-u-ca-japanese"),   "bar"
+    );
+
+    public static void main(String... args) {
+        data.forEach((l, e) -> {
+            DateFormatSymbols dfs = DateFormatSymbols.getInstance(l);
+            String[] months = dfs.getMonths();
+            System.out.printf("January string for locale %s is %s.%n", l.toString(), months[0]);
+            if (!months[0].equals(e)) {
+                throw new RuntimeException("DateFormatSymbols provider is not called for" + l);
+            }
+        });
+    }
+}