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/**
* @ test
* @ bug 8297875
* @ summary jar should not compress the manifest directory entry
* @ modules jdk . jartool
* @ run testng ManifestDirectoryCompression
*/
import static org.testng.Assert .assertEquals;
import static org.testng.Assert .assertNotNull;
import static org.testng.Assert .fail;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.Test;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.List;
import java.util.jar.JarFile;
import java.util.spi.ToolProvider;
import java.util.zip.ZipEntry;
public class ManifestDirectoryCompression {
private static final ToolProvider JAR_TOOL =
ToolProvider.findFirst("jar" )
.orElseThrow(() -> new RuntimeException("jar tool not found" ));
private static final String JAR_FILE_NAME = "test.jar" ;
private static final String FILE_NAME = "test.txt" ;
@AfterMethod
private void cleanup() throws Exception {
Files.deleteIfExists(Path.of(JAR_FILE_NAME));
Files.deleteIfExists(Path.of(FILE_NAME));
}
@Test
public void testDirectoryCompressionMethod() throws Exception {
Files.writeString(Path.of(FILE_NAME), "Some text..." );
String[] jarArgs = new String[] {"cf" , JAR_FILE_NAME, FILE_NAME};
if (JAR_TOOL.run(System.out, System.err, jarArgs) != 0 ) {
fail("Could not create jar file: " + List.of(jarArgs));
}
try (JarFile jarFile = new JarFile(JAR_FILE_NAME)) {
ZipEntry zipEntry = jarFile.getEntry("META-INF/" );
assertNotNull(zipEntry);
assertEquals(zipEntry.getMethod(), ZipEntry.STORED);
assertEquals(zipEntry.getSize(), 0 );
assertEquals(zipEntry.getCompressedSize(), 0 );
}
}
}
Messung V0.5 in Prozent C=93 H=81 G=86
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-06-10)
¤
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