/*
* Copyright (C) 2009, Google Inc.
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
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* without modification, are permitted provided that the following
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* - Redistributions of source code must retain the above copyright
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* - Redistributions in binary form must reproduce the above
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* disclaimer in the documentation and/or other materials provided
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package org.eclipse.jgit.internal.storage.file;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.jgit.errors.CorruptObjectException;
import org.eclipse.jgit.junit.JGitTestUtil;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectLoader;
import org.eclipse.jgit.storage.file.WindowCacheConfig;
import org.eclipse.jgit.test.resources.SampleDataRepositoryTestCase;
import org.eclipse.jgit.util.MutableInteger;
import org.junit.Before;
import org.junit.Test;
public class WindowCacheGetTest extends SampleDataRepositoryTestCase {
private List<TestObject> toLoad;
@Override
@Before
public void setUp() throws Exception {
super.setUp();
toLoad = new ArrayList<TestObject>();
final BufferedReader br = new BufferedReader(new InputStreamReader(
new FileInputStream(JGitTestUtil
.getTestResourceFile("all_packed_objects.txt")),
Constants.CHARSET));
try {
String line;
while ((line = br.readLine()) != null) {
final String[] parts = line.split(" {1,}");
final TestObject o = new TestObject();
o.id = ObjectId.fromString(parts[0]);
o.setType(parts[1]);
// parts[2] is the inflate size
// parts[3] is the size-in-pack
// parts[4] is the offset in the pack
toLoad.add(o);
}
} finally {
br.close();
}
assertEquals(96, toLoad.size());
}
@Test
public void testCache_Defaults() throws IOException {
WindowCacheConfig cfg = new WindowCacheConfig();
cfg.install();
doCacheTests();
checkLimits(cfg);
final WindowCache cache = WindowCache.getInstance();
assertEquals(6, cache.getOpenFiles());
assertEquals(17346, cache.getOpenBytes());
}
@Test
public void testCache_TooFewFiles() throws IOException {
final WindowCacheConfig cfg = new WindowCacheConfig();
cfg.setPackedGitOpenFiles(2);
cfg.install();
doCacheTests();
checkLimits(cfg);
}
@Test
public void testCache_TooSmallLimit() throws IOException {
final WindowCacheConfig cfg = new WindowCacheConfig();
cfg.setPackedGitWindowSize(4096);
cfg.setPackedGitLimit(4096);
cfg.install();
doCacheTests();
checkLimits(cfg);
}
private static void checkLimits(final WindowCacheConfig cfg) {
final WindowCache cache = WindowCache.getInstance();
assertTrue(cache.getOpenFiles() <= cfg.getPackedGitOpenFiles());
assertTrue(cache.getOpenBytes() <= cfg.getPackedGitLimit());
assertTrue(0 < cache.getOpenFiles());
assertTrue(0 < cache.getOpenBytes());
}
private void doCacheTests() throws IOException {
for (final TestObject o : toLoad) {
final ObjectLoader or = db.open(o.id, o.type);
assertNotNull(or);
assertEquals(o.type, or.getType());
}
}
private class TestObject {
ObjectId id;
int type;
void setType(final String typeStr) throws CorruptObjectException {
final byte[] typeRaw = Constants.encode(typeStr + " ");
final MutableInteger ptr = new MutableInteger();
type = Constants.decodeTypeString(id, typeRaw, (byte) ' ', ptr);
}
}
}