question: public void testDuplicateEntries ( ) throws Exception { String name1 = "test_file_name1" ; String name2 = "test_file_name2" ; ByteArrayOutputStream baos = new ByteArrayOutputStream ( ) ; ZipOutputStream out = new ZipOutputStream ( baos ) ; out . putNextEntry ( new ZipEntry ( name2 ) ) ; out . closeEntry ( ) ; out . putNextEntry ( new ZipEntry ( name1 ) ) ; out . closeEntry ( ) ; out . close ( ) ; byte [ ] buffer = baos . toByteArray ( ) ; replaceBytes ( buffer , name2 . getBytes ( ) , name1 . getBytes ( ) ) ; File badZip = createTemporaryZipFile ( ) ; writeBytes ( badZip , buffer ) ; try { ZipFile bad = new ZipFile ( badZip ) ; fail ( ) ; } catch ( ZipException expected ) { } }
target:  Make sure we don't fail silently for duplicate entries. b/8219321