public void unzip(String from, boolean remove) throws IOException {
        String to = Helper.pruneFileEnd(from);
        unzip(from, to, remove);
    }
@Test
    public void testUnzip() throws Exception {
        String to = "./target/tmp/test";
        Helper.removeDir(new File(to));
        new Unzipper().unzip("./src/test/resources/com/graphhopper/util/test.zip", to, false);
        assertTrue(new File("./target/tmp/test/file2 bäh").exists());
        assertTrue(new File("./target/tmp/test/folder1").isDirectory());
        assertTrue(new File("./target/tmp/test/folder1/folder 3").isDirectory());
        Helper.removeDir(new File(to));
    }