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LUCENE-4435: add test for Constants.LUCENE_MAIN_VERSION 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1390459 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Robert Muir 2012-09-26 13:16:12 +00:00
parent c11771adde
commit a4cd03cab9
1 changed files with 36 additions and 0 deletions
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36
lucene/core/src/test/org/apache/lucene/index/TestBackwardsCompatibility.java
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@ -23,6 +23,7 @@ import java.io.IOException;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
@ -63,6 +64,7 @@ import org.apache.lucene.util.Bits;
import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.Constants;
import org.apache.lucene.util.LuceneTestCase;
import org.apache.lucene.util.StringHelper;
import org.apache.lucene.util._TestUtil;
import org.apache.lucene.util.LuceneTestCase.SuppressCodecs;
import org.junit.AfterClass;
@ -747,6 +749,40 @@ public class TestBackwardsCompatibility extends LuceneTestCase {
}
}
/**
* Test that we didn't forget to bump the current Constants.LUCENE_MAIN_VERSION.
* This is important so that we can determine which version of lucene wrote the segment.
*/
public void testOldVersions() throws Exception {
// first create a little index with the current code and get the version
Directory currentDir = newDirectory();
RandomIndexWriter riw = new RandomIndexWriter(random(), currentDir);
riw.addDocument(new Document());
riw.close();
DirectoryReader ir = DirectoryReader.open(currentDir);
SegmentReader air = (SegmentReader)ir.leaves().get(0).reader();
String currentVersion = air.getSegmentInfo().info.getVersion();
assertNotNull(currentVersion); // only 3.0 segments can have a null version
ir.close();
currentDir.close();
Comparator<String> comparator = StringHelper.getVersionComparator();
// now check all the old indexes, their version should be < the current version
for (String name : oldNames) {
Directory dir = oldIndexDirs.get(name);
DirectoryReader r = DirectoryReader.open(dir);
for (AtomicReaderContext context : r.leaves()) {
air = (SegmentReader) context.reader();
String oldVersion = air.getSegmentInfo().info.getVersion();
assertNotNull(oldVersion); // only 3.0 segments can have a null version
assertTrue("current Constants.LUCENE_MAIN_VERSION is <= an old index: did you forget to bump it?!",
comparator.compare(oldVersion, currentVersion) < 0);
}
r.close();
}
}
public void testNumericFields() throws Exception {
for (String name : oldNames) {