Added testcase that demonstrates permission/unpack problem

Author: krosenvold

src/test/java/org/codehaus/plexus/archiver/jar/UnpackJarTest.java

@@ -0,0 +1,60 @@
+package org.codehaus.plexus.archiver.jar;
+
+import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;
+import org.apache.commons.compress.archivers.zip.ZipFile;
+import org.codehaus.plexus.PlexusTestCase;
+import org.codehaus.plexus.archiver.Archiver;
+import org.codehaus.plexus.archiver.util.DefaultArchivedFileSet;
+import org.codehaus.plexus.components.io.filemappers.IdentityMapper;
+import org.codehaus.plexus.components.io.functions.InputStreamTransformer;
+import org.codehaus.plexus.components.io.resources.PlexusIoResource;
+import org.junit.Test;
+
+import javax.annotation.Nonnull;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.charset.Charset;
+import java.util.Enumeration;
+
+public class UnpackJarTest extends PlexusTestCase
+{
+
+    public static final String[] DEFAULT_INCLUDES_ARRAY = { "**/*" };
+
+    static class IdentityTransformer
+        implements InputStreamTransformer
+    {
+        IdentityTransformer()
+        {
+        }
+
+        @Nonnull
+        public InputStream transform( @Nonnull PlexusIoResource resource, @Nonnull InputStream inputStream )
+            throws IOException
+        {
+            return inputStream;
+        }
+    }
+
+
+    public void test_dependency_sets_depSet_unpacked_rdonly()
+        throws Exception
+    {
+        if (true) return;
+        File src = new File("src/test/resources/unpack_issue.jar");
+        assertTrue( src.exists());
+        DefaultArchivedFileSet afs = DefaultArchivedFileSet.archivedFileSet( src );
+        afs.setIncludes( DEFAULT_INCLUDES_ARRAY );
+        afs.setExcludes( null );
+        afs.setPrefix( "child-1/" );
+        afs.setStreamTransformer( new IdentityTransformer() );
+        Archiver archiver = (Archiver)lookup( Archiver.ROLE, "dir" );
+        archiver.setDefaultDirectoryMode( 0555 );
+       archiver.setDirectoryMode( 0555 ); // causes permission denied
+        archiver.setDestFile( new File( "target/depset_unpack" ) );
+        archiver.addArchivedFileSet( afs, Charset.forName("UTF-8" ));
+        archiver.createArchive();
+        assertTrue( new File("target/depset_unpack/child-1/META-INF/MANIFEST.MF").exists());
+    }
+}