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/*******************************************************************************
* Copyright (c) 2008, 2017 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
* martin.kirst@s1998.tu-chemnitz.de - fixed and improved sort algorithm tests
*******************************************************************************/
package org.eclipse.equinox.p2.tests.artifact.repository;
import static org.junit.Assert.assertEquals;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import org.eclipse.equinox.internal.p2.artifact.repository.MirrorSelector;
import org.eclipse.equinox.internal.p2.artifact.repository.MirrorSelector.MirrorInfo;
import org.junit.Before;
import org.junit.Test;
public class MirrorSelectorTest {
private List<MirrorInfo> originals;
@Before
public void setUp() throws Exception {
// examples taken from real live.
// This is the expected order of mirrors,
// doesn't matter how often you're resorting ;-)
originals = new ArrayList<>();
MirrorInfo mi = null;
mi = new MirrorInfo("http://ftp.wh2.tu-dresden.de/pub/mirrors/eclipse/", 3);
mi.setBytesPerSecond(224906);
mi.incrementFailureCount();
//mi.totalFailureCount = 1;
originals.add(mi);
mi = new MirrorInfo("http://ftp-stud.fht-esslingen.de/pub/Mirrors/eclipse/", 1);
mi.setBytesPerSecond(125868);
mi.incrementFailureCount();
//mi.totalFailureCount = 1;
originals.add(mi);
mi = new MirrorInfo("http://mirror.netcologne.de/eclipse//", 0);
mi.setBytesPerSecond(199719);
mi.incrementFailureCount();
mi.incrementFailureCount();
//mi.totalFailureCount = 2;
originals.add(mi);
mi = new MirrorInfo("http://mirror.selfnet.de/eclipse/", 5);
mi.setBytesPerSecond(132379);
mi.incrementFailureCount();
//mi.totalFailureCount = 1;
originals.add(mi);
mi = new MirrorInfo("http://mirror.switch.ch/eclipse/", 7);
mi.setBytesPerSecond(137107);
mi.incrementFailureCount();
//mi.totalFailureCount = 1;
originals.add(mi);
mi = new MirrorInfo("http://www.rcp-vision.com/eclipse/eclipseMirror/", 8);
mi.setBytesPerSecond(128472);
mi.incrementFailureCount();
//mi.totalFailureCount = 1;
originals.add(mi);
mi = new MirrorInfo("http://eclipse.mirror.garr.it/mirrors/eclipse//", 10);
mi.setBytesPerSecond(129359);
mi.incrementFailureCount();
mi.incrementFailureCount();
//mi.totalFailureCount = 2;
originals.add(mi);
mi = new MirrorInfo("http://ftp.roedu.net/pub/mirrors/eclipse.org/", 6);
mi.setBytesPerSecond(59587);
mi.incrementFailureCount();
//mi.totalFailureCount = 1;
originals.add(mi);
mi = new MirrorInfo("http://giano.com.dist.unige.it/eclipse/", 9);
mi.setBytesPerSecond(85624);
mi.incrementFailureCount();
//mi.totalFailureCount = 1;
originals.add(mi);
mi = new MirrorInfo("http://ftp.roedu.net/mirrors/eclipse.org//", 19);
mi.setBytesPerSecond(149572);
mi.incrementFailureCount();
mi.incrementFailureCount();
//mi.totalFailureCount = 2;
originals.add(mi);
mi = new MirrorInfo("http://ftp.ing.umu.se/mirror/eclipse/", 18);
mi.setBytesPerSecond(105858);
mi.incrementFailureCount();
//mi.totalFailureCount = 1;
originals.add(mi);
mi = new MirrorInfo("http://mirrors.fe.up.pt/pub/eclipse//", 15);
mi.setBytesPerSecond(67202);
mi.incrementFailureCount();
//mi.totalFailureCount = 1;
originals.add(mi);
mi = new MirrorInfo("http://ftp.heanet.ie/pub/eclipse//", 17);
mi.setBytesPerSecond(68067);
mi.incrementFailureCount();
//mi.totalFailureCount = 1;
originals.add(mi);
mi = new MirrorInfo("http://ftp.sh.cvut.cz/MIRRORS/eclipse/", 21);
mi.setBytesPerSecond(73659);
mi.incrementFailureCount();
//mi.totalFailureCount = 1;
originals.add(mi);
mi = new MirrorInfo("http://ftp.man.poznan.pl/eclipse/", 22);
mi.setBytesPerSecond(73446);
mi.incrementFailureCount();
//mi.totalFailureCount = 1;
originals.add(mi);
mi = new MirrorInfo("http://eclipse.dcc.fc.up.pt/", 16);
mi.setBytesPerSecond(45175);
mi.incrementFailureCount();
//mi.totalFailureCount = 1;
originals.add(mi);
mi = new MirrorInfo("http://eclipse.nordnet.fi/eclipse/", 23);
mi.setBytesPerSecond(61443);
mi.incrementFailureCount();
//mi.totalFailureCount = 1;
originals.add(mi);
mi = new MirrorInfo("http://www.gtlib.gatech.edu/pub/eclipse/", 26);
mi.setBytesPerSecond(57637);
mi.incrementFailureCount();
//mi.totalFailureCount = 1;
originals.add(mi);
mi = new MirrorInfo("http://ftp.osuosl.org/pub/eclipse//", 28);
mi.setBytesPerSecond(35928);
mi.incrementFailureCount();
//mi.totalFailureCount = 1;
originals.add(mi);
mi = new MirrorInfo("http://mirrors.med.harvard.edu/eclipse//", 32);
mi.setBytesPerSecond(40683);
//mi.totalFailureCount = 0;
originals.add(mi);
mi = new MirrorInfo("http://mirrors.ibiblio.org/pub/mirrors/eclipse/", 31);
mi.setBytesPerSecond(34207);
mi.incrementFailureCount();
mi.incrementFailureCount();
//mi.totalFailureCount = 2;
originals.add(mi);
mi = new MirrorInfo("http://ftp.ussg.iu.edu/eclipse/", 33);
mi.setBytesPerSecond(31402);
mi.incrementFailureCount();
//mi.totalFailureCount = 1;
originals.add(mi);
mi = new MirrorInfo("http://mirrors.xmission.com/eclipse/", 29);
mi.setBytesPerSecond(24147);
mi.incrementFailureCount();
//mi.totalFailureCount = 1;
originals.add(mi);
mi = new MirrorInfo("http://ftp.osuosl.org/pub/eclipse/", 34);
mi.setBytesPerSecond(-1);
//mi.totalFailureCount = 0;
originals.add(mi);
mi = new MirrorInfo("http://www.ftp.saix.net/Eclipse//", 40);
mi.setBytesPerSecond(-1);
//mi.totalFailureCount = 0;
originals.add(mi);
mi = new MirrorInfo("http://ftp.daum.net/eclipse/", 41);
mi.setBytesPerSecond(-1);
//mi.totalFailureCount = 0;
originals.add(mi);
mi = new MirrorInfo("http://eclipse.stu.edu.tw/", 43);
mi.setBytesPerSecond(-1);
//mi.totalFailureCount = 0;
originals.add(mi);
mi = new MirrorInfo("http://eclipse.stu.edu.tw/", 44);
mi.setBytesPerSecond(-1);
//mi.totalFailureCount = 0;
originals.add(mi);
mi = new MirrorInfo("http://ftp.kaist.ac.kr/eclipse/", 45);
mi.setBytesPerSecond(-1);
//mi.totalFailureCount = 0;
originals.add(mi);
mi = new MirrorInfo("http://eclipse.stu.edu.tw//", 46);
mi.setBytesPerSecond(-1);
//mi.totalFailureCount = 0;
originals.add(mi);
mi = new MirrorInfo("http://ftp.tsukuba.wide.ad.jp/software/eclipse//", 47);
mi.setBytesPerSecond(-1);
//mi.totalFailureCount = 0;
originals.add(mi);
mi = new MirrorInfo("http://mirror.neu.edu.cn/eclipse/", 50);
mi.setBytesPerSecond(-1);
//mi.totalFailureCount = 0;
originals.add(mi);
mi = new MirrorInfo("http://mirror.bit.edu.cn/eclipse/", 51);
mi.setBytesPerSecond(-1);
//mi.totalFailureCount = 0;
originals.add(mi);
mi = new MirrorInfo("http://ftp.cs.pu.edu.tw/pub/eclipse/", 52);
mi.setBytesPerSecond(-1);
//mi.totalFailureCount = 0;
originals.add(mi);
mi = new MirrorInfo("http://ftp.neu.edu.cn/mirrors/eclipse/", 53);
mi.setBytesPerSecond(-1);
//mi.totalFailureCount = 0;
originals.add(mi);
mi = new MirrorInfo("http://download.actuatechina.com/eclipse/", 54);
mi.setBytesPerSecond(-1);
//mi.totalFailureCount = 0;
originals.add(mi);
mi = new MirrorInfo("http://linorg.usp.br/eclipse/", 57);
mi.setBytesPerSecond(-1);
//mi.totalFailureCount = 0;
originals.add(mi);
mi = new MirrorInfo("http://eclipse.c3sl.ufpr.br/", 59);
mi.setBytesPerSecond(-1);
//mi.totalFailureCount = 0;
originals.add(mi);
mi = new MirrorInfo("http://download.eclipse.org/", 61);
mi.setBytesPerSecond(-1);
//mi.totalFailureCount = 0;
originals.add(mi);
}
@Test
public void testSorting() {
long maxBytesPerSecond = 0;
for (MirrorInfo x : originals) {
maxBytesPerSecond = Math.max(maxBytesPerSecond, x.getBytesPerSecond());
}
MirrorSelector.MirrorInfoComparator comparator = new MirrorSelector.MirrorInfoComparator(maxBytesPerSecond, 0, 0);
// do 1000 tries of randomize and new sort
// the result should always be the same
// This way we hopefully get sure, that contract of Comparator#compareTo
// is fulfilled.
for (int x = 0; x < 1000; x++) {
ArrayList<MirrorInfo> templist = new ArrayList<>(originals);
Collections.shuffle(templist);
MirrorInfo[] mirrors = templist.toArray(new MirrorInfo[originals.size()]);
Arrays.sort(mirrors, comparator);
assertList(originals, mirrors);
/*
* ================================================================
*
* Because of
* Bug 317785 - Synchronization problem in mirror selection
*
* We need an implementation of TimSort for this test.
* But because of incompatibility of EPL and GPL, the TimSort
* algorithm was removed.
* Instead, this test relies on the fact, that a proper implementation
* of Comparator will always compute the same result.
* When this test case runs within a JVM7, it will automatically
* use the new TimSort algorithm.
* ================================================================
*/
}
}
@Test
public void testComparatorZeros() {
MirrorSelector.MirrorInfoComparator comparator = new MirrorSelector.MirrorInfoComparator(0, 0, 0);
assertEquals("equals", comparator.compare(originals.get(0), originals.get(0)), 0);
assertEquals("equals", comparator.compare(originals.get(1), originals.get(1)), 0);
}
/**
* @param originallist
* @param mirrors
*/
private void assertList(List<MirrorInfo> originallist, MirrorInfo[] mirrors) {
assertEquals("length", originallist.size(), mirrors.length);
for (int i = 0; i < originallist.size(); i++) {
assertEquals("equal mirror_" + i, originallist.get(i), mirrors[i]);
}
}
}
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