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fix rare-ish test bug

This commit is contained in:
Mike McCandless 2016-03-10 16:34:04 -05:00
parent 7523ca1162
commit 859ad950cc
1 changed files with 7 additions and 0 deletions
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7
lucene/core/src/test/org/apache/lucene/index/TestAllFilesCheckIndexHeader.java
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@ -28,6 +28,7 @@ import org.apache.lucene.store.Directory;
import org.apache.lucene.store.IOContext; import org.apache.lucene.store.IOContext;
import org.apache.lucene.store.IndexInput; import org.apache.lucene.store.IndexInput;
import org.apache.lucene.store.IndexOutput; import org.apache.lucene.store.IndexOutput;
import org.apache.lucene.store.MockDirectoryWrapper;
import org.apache.lucene.util.LineFileDocs; import org.apache.lucene.util.LineFileDocs;
import org.apache.lucene.util.LuceneTestCase.SuppressFileSystems; import org.apache.lucene.util.LuceneTestCase.SuppressFileSystems;
import org.apache.lucene.util.LuceneTestCase; import org.apache.lucene.util.LuceneTestCase;
@ -86,6 +87,12 @@ public class TestAllFilesCheckIndexHeader extends LuceneTestCase {
private void checkOneFile(Directory dir, String victim) throws IOException { private void checkOneFile(Directory dir, String victim) throws IOException {
try (BaseDirectoryWrapper dirCopy = newDirectory()) { try (BaseDirectoryWrapper dirCopy = newDirectory()) {
dirCopy.setCheckIndexOnClose(false); dirCopy.setCheckIndexOnClose(false);
if (dirCopy instanceof MockDirectoryWrapper) {
// The while(true) loop below, under rarish circumstances, can sometimes double write:
((MockDirectoryWrapper) dirCopy).setPreventDoubleWrite(false);
}
long victimLength = dir.fileLength(victim); long victimLength = dir.fileLength(victim);
int wrongBytes = TestUtil.nextInt(random(), 1, (int) Math.min(100, victimLength)); int wrongBytes = TestUtil.nextInt(random(), 1, (int) Math.min(100, victimLength));
assert victimLength > 0; assert victimLength > 0;