#vulnerable code 
                                @Test
    public void testBasicDecoding() throws Exception {
        String s = "5\r\n01234\r\n5\r\n56789\r\n6\r\nabcdef\r\n0\r\n\r\n";
        ReadableByteChannel channel = new ReadableByteChannelMockup(
                new String[] {s}, "US-ASCII");
        HttpParams params = new BasicHttpParams();

        SessionInputBuffer inbuf = new SessionInputBufferImpl(1024, 256, params);
        HttpTransportMetricsImpl metrics = new HttpTransportMetricsImpl();
        ChunkDecoder decoder = new ChunkDecoder(channel, inbuf, metrics);

        ByteBuffer dst = ByteBuffer.allocate(1024);

        int bytesRead = decoder.read(dst);
        Assert.assertEquals(16, bytesRead);
        Assert.assertEquals("0123456789abcdef", convert(dst));
        Header[] footers = decoder.getFooters();
        Assert.assertEquals(0, footers.length);

        dst.clear();
        bytesRead = decoder.read(dst);
        Assert.assertEquals(-1, bytesRead);
        Assert.assertTrue(decoder.isCompleted());
    } 
                            #location 23 
                            #vulnerability type RESOURCE_LEAK
#fixed code
                                @Test
    public void testBasicDecoding() throws Exception {
        String s = "5\r\n01234\r\n5\r\n56789\r\n6\r\nabcdef\r\n0\r\n\r\n";
        ReadableByteChannel channel = new ReadableByteChannelMock(
                new String[] {s}, "US-ASCII");
        HttpParams params = new BasicHttpParams();

        SessionInputBuffer inbuf = new SessionInputBufferImpl(1024, 256, params);
        HttpTransportMetricsImpl metrics = new HttpTransportMetricsImpl();
        ChunkDecoder decoder = new ChunkDecoder(channel, inbuf, metrics);

        ByteBuffer dst = ByteBuffer.allocate(1024);

        int bytesRead = decoder.read(dst);
        Assert.assertEquals(16, bytesRead);
        Assert.assertEquals("0123456789abcdef", convert(dst));
        Header[] footers = decoder.getFooters();
        Assert.assertEquals(0, footers.length);

        dst.clear();
        bytesRead = decoder.read(dst);
        Assert.assertEquals(-1, bytesRead);
        Assert.assertTrue(decoder.isCompleted());
    }