1 /*
   2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 import java.time.LocalDate;
  25 import java.time.format.DateTimeFormatter;
  26 import java.time.format.DateTimeParseException;
  27 import java.util.regex.Matcher;
  28 import java.util.regex.Pattern;
  29 
  30 import com.oracle.java.testlibrary.Asserts;
  31 
  32 /*
  33  * @test TestPrintGCDateStampsEnabled
  34  * @summary test checks -XX:+PrintGCDateStamps enables date stamps printing
  35  * @key gc
  36  * @library /testlibrary
  37  * @run main/othervm -Xmx128M -Xloggc:PrintGCDateStampsEnabled.txt -XX:+PrintGC -XX:+PrintGCDateStamps GCTask
  38  * @run main TestPrintGCDateStampsEnabled
  39  */
  40 public class TestPrintGCDateStampsEnabled extends AbstractPrintGCTest {
  41 
  42     public void runTest() {
  43         String content = getContent();
  44         // match an every line containing '[GC' and capture everything before the first
  45         // colon followed by space
  46         Pattern pattern = Pattern.compile("^(.+?): +?.*\\[GC", Pattern.MULTILINE);
  47         Matcher matcher = pattern.matcher(content);
  48         LocalDate gcLastDateStamp = LocalDate.MIN;
  49         while (matcher.find()) {
  50             String match = matcher.group(1);
  51             try {
  52                 LocalDate dateStamp = LocalDate.parse(
  53                     match, DateTimeFormatter.ofPattern(
  54                         "yyyy-MM-dd'T'HH:mm:ss.SSSxxxx"));
  55                 Asserts.assertGreaterThanOrEqual(dateStamp, gcLastDateStamp,
  56                     "GC datestamps are inconsistent");
  57             } catch (DateTimeParseException e) {
  58                 Asserts.assertFalse(true, "The text '" + match + "' is not a valid GC's DateStamp");
  59             }
  60         }
  61     }
  62 
  63     public static void main(String[] args) {
  64         new TestPrintGCDateStampsEnabled().runTest();
  65     }
  66 }