@@ -0,0 +1,1584 @@
+package org.apache.solr.common.util;%0A%0A/*%0A * Licensed to the Apache Software Foundation (ASF) under one or more%0A * contributor license agreements.  See the NOTICE file distributed with%0A * this work for additional information regarding copyright ownership.%0A * The ASF licenses this file to You under the Apache License, Version 2.0%0A * (the %22License%22); you may not use this file except in compliance with%0A * the License.  You may obtain a copy of the License at%0A *%0A *     http://www.apache.org/licenses/LICENSE-2.0%0A *%0A * Unless required by applicable law or agreed to in writing, software%0A * distributed under the License is distributed on an %22AS IS%22 BASIS,%0A * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.%0A * See the License for the specific language governing permissions and%0A * limitations under the License.%0A */%0A%0Aimport java.text.ParseException;%0Aimport java.util.Date;%0A%0Aimport org.apache.lucene.util.LuceneTestCase;%0A%0Apublic class TestDateUtil extends LuceneTestCase %7B%0A%0A  public void testCurrentTime() throws ParseException %7B%0A    long now = System.currentTimeMillis();%0A    assertParsedDate(now, new Date(now).toString(), 1000L);%0A  %7D%0A  %0A  public void testParseDate() throws ParseException %7B%0A    assertParsedDate(1226583351000L, %22Thu Nov 13 04:35:51 AKST 2008%22, 0L);%0A  %7D%0A    %0A  private static void assertParsedDate(long ts, String dateStr, long epsilon) throws ParseException %7B%0A    System.out.println(DateUtil.parseDate(dateStr).getTime());%0A    assertTrue(%22Incorrect parsed timestamp%22, Math.abs(ts - DateUtil.parseDate(dateStr).getTime()) %3C= epsilon);%0A  %7D%0A%0A%7D%0A

Add a testcase for DateUtil to debug the recent Java 9 failures (may be extended)