@BeforeClass
 public static void beforeClass() throws Exception, BrutException {
   sTmpDir = new ExtFile(OS.createTempDirectory());
   sTestOrigDir = new ExtFile(sTmpDir, "testapp-orig");
   sTestNewDir = new ExtFile(sTmpDir, "testapp-new");
   LOGGER.info("Unpacking testapp...");
   TestUtils.copyResourceDir(BuildAndDecodeTest.class, "brut/apktool/testapp/", sTestOrigDir);
 }