source.dussan.org Git - jgit.git/blob

   1 /*
   2  * Copyright (c) 2024 Jacek Centkowski <geminica.programs@gmail.com> and others.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Distribution License v. 1.0 which is available at
   6  * https://www.eclipse.org/org/documents/edl-v10.php.
   7  *
   8  * SPDX-License-Identifier: BSD-3-Clause
   9  */
  10
  11 package org.eclipse.jgit.internal.storage.file;
  12
  13 import static org.junit.Assert.assertEquals;
  14
  15 import java.io.IOException;
  16 import java.nio.file.Files;
  17 import java.util.stream.StreamSupport;
  18
  19 import org.eclipse.jgit.lib.PersonIdent;
  20 import org.eclipse.jgit.revwalk.RevCommit;
  21 import org.junit.Test;
  22
  23 public class GcNumberOfPackFilesSinceBitmapStatisticsTest extends GcTestCase {
  24         @Test
  25         public void testShouldReportZeroObjectsForInitializedRepo()
  26                         throws IOException {
  27                 assertEquals(0L, gc.getStatistics().numberOfPackFilesSinceBitmap);
  28         }
  29
  30         @Test
  31         public void testShouldReportAllPackFilesWhenNoGcWasPerformed()
  32                         throws Exception {
  33                 tr.packAndPrune();
  34                 long result = gc.getStatistics().numberOfPackFilesSinceBitmap;
  35
  36                 assertEquals(repo.getObjectDatabase().getPacks().size(), result);
  37         }
  38
  39         @Test
  40         public void testShouldReportNoObjectsDirectlyAfterGc() throws Exception {
  41                 // given
  42                 addCommit(null);
  43                 gc.gc().get();
  44                 assertEquals(1L, repositoryBitmapFiles());
  45                 assertEquals(0L, gc.getStatistics().numberOfPackFilesSinceBitmap);
  46         }
  47
  48         @Test
  49         public void testShouldReportNewObjectsSinceGcWhenRepositoryProgresses()
  50                         throws Exception {
  51                 // commit & gc
  52                 RevCommit parent = addCommit(null);
  53                 gc.gc().get();
  54                 assertEquals(1L, repositoryBitmapFiles());
  55
  56                 // progress & pack
  57                 addCommit(parent);
  58                 tr.packAndPrune();
  59
  60                 assertEquals(1L, gc.getStatistics().numberOfPackFilesSinceBitmap);
  61         }
  62
  63         @Test
  64         public void testShouldReportNewObjectsFromTheLatestBitmapWhenRepositoryProgresses()
  65                         throws Exception {
  66                 // commit & gc
  67                 RevCommit parent = addCommit(null);
  68                 gc.gc().get();
  69                 assertEquals(1L, repositoryBitmapFiles());
  70
  71                 // progress & gc
  72                 parent = addCommit(parent);
  73                 gc.gc().get();
  74                 assertEquals(2L, repositoryBitmapFiles());
  75
  76                 // progress & pack
  77                 addCommit(parent);
  78                 tr.packAndPrune();
  79
  80                 assertEquals(1L, gc.getStatistics().numberOfPackFilesSinceBitmap);
  81         }
  82
  83         private RevCommit addCommit(RevCommit parent) throws Exception {
  84                 return tr.branch("master").commit()
  85                                 .author(new PersonIdent("repo-metrics", "repo@metrics.com"))
  86                                 .parent(parent).create();
  87         }
  88
  89         private long repositoryBitmapFiles() throws IOException {
  90                 return StreamSupport
  91                                 .stream(Files
  92                                                 .newDirectoryStream(repo.getObjectDatabase()
  93                                                                 .getPackDirectory().toPath(), "pack-*.bitmap")
  94                                                 .spliterator(), false)
  95                                 .count();
  96         }
  97 }