--- /dev/null	2019-12-11 09:40:21.000000000 -0800
+++ new/test/jdk/java/time/nontestng/java/time/zone/CustomZoneNameTest.java	2019-12-11 09:40:21.000000000 -0800
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2019, 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.time.Instant;
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.Map;
+
+/* @test
+ * @bug 8235238
+ * @summary Checks whether custom zone names can be formatted/parsed correctly.
+ * @library zoneProvider
+ * @build custom.CustomZoneRulesProvider custom.CustomTimeZoneNameProvider
+ * @run main/othervm -Djava.locale.providers=SPI,CLDR CustomZoneNameTest
+ */
+public class CustomZoneNameTest {
+
+    private final static long now = 1575669972372L;
+    private final static Instant instant = Instant.ofEpochMilli(now);
+    private final static ZoneId customZone = ZoneId.of("Custom/Timezone");
+
+    // test data
+    private final static Map<String, String>  formats = Map.of(
+        "yyyy-MM-dd HH:mm:ss.SSS VV", "2019-12-06 22:06:12.372 Custom/Timezone",
+        "yyyy-MM-dd HH:mm:ss.SSS z", "2019-12-06 22:06:12.372 CUST_WT",
+        "yyyy-MM-dd HH:mm:ss.SSS zzzz", "2019-12-06 22:06:12.372 Custom Winter Time",
+        "yyyy-MM-dd HH:mm:ss.SSS v", "2019-12-06 22:06:12.372 Custom Time",
+        "yyyy-MM-dd HH:mm:ss.SSS vvvv", "2019-12-06 22:06:12.372 Custom Timezone Time"
+    );
+
+    public static void main(String... args) {
+        testFormatting();
+        testParsing();
+    }
+
+    private static void testFormatting() {
+        var customZDT = ZonedDateTime.ofInstant(instant, customZone);
+        formats.entrySet().stream()
+            .filter(e -> {
+                var formatted = DateTimeFormatter.ofPattern(e.getKey()).format(customZDT);
+                var expected = e.getValue();
+                System.out.println("testFormatting. Pattern: " + e.getKey() +
+                        ", expected: " + expected +
+                        ", formatted: " + formatted);
+                return !formatted.equals(expected);
+            })
+            .findAny()
+            .ifPresent(e -> {
+                throw new RuntimeException(
+                        "Provider's custom name was not retrieved for the format " +
+                        e.getKey());
+            });
+    }
+
+    public static void testParsing() {
+        formats.entrySet().stream()
+            .filter(e -> {
+                var fmt = DateTimeFormatter.ofPattern(e.getKey());
+                var input = e.getValue();
+                var parsedInstant = fmt.parse(input, Instant::from).toEpochMilli();
+                var parsedZone = fmt.parse(input, ZonedDateTime::from).getZone();
+                System.out.println("testParsing. Input: " + input +
+                        ", expected instant: " + now +
+                        ", expected zone: " + customZone +
+                        ", parsed instant: " + parsedInstant +
+                        ", parsed zone: " + parsedZone);
+                return parsedInstant != now ||
+                        !parsedZone.equals(customZone);
+            })
+            .findAny()
+            .ifPresent(e -> {
+                throw new RuntimeException("Parsing failed for the format " +
+                                e.getKey());
+            });
+    }
+}