#vulnerable code 
                                @Test
    public void testInvalidInput() throws Exception {
        String s = "stuff";
        ReadableByteChannel channel = new ReadableByteChannelMockup(
                new String[] {s}, "US-ASCII");
        HttpParams params = new BasicHttpParams();

        SessionInputBuffer inbuf = new SessionInputBufferImpl(1024, 256, params);
        HttpTransportMetricsImpl metrics = new HttpTransportMetricsImpl();
        LengthDelimitedDecoder decoder = new LengthDelimitedDecoder(
                channel, inbuf, metrics, 3);

        try {
            decoder.read(null);
            Assert.fail("IllegalArgumentException should have been thrown");
        } catch (IllegalArgumentException ex) {
            // expected
        }
    } 
                            #location 14 
                            #vulnerability type RESOURCE_LEAK
#fixed code
                                @Test
    public void testInvalidInput() throws Exception {
        String s = "stuff";
        ReadableByteChannel channel = new ReadableByteChannelMock(
                new String[] {s}, "US-ASCII");
        HttpParams params = new BasicHttpParams();

        SessionInputBuffer inbuf = new SessionInputBufferImpl(1024, 256, params);
        HttpTransportMetricsImpl metrics = new HttpTransportMetricsImpl();
        LengthDelimitedDecoder decoder = new LengthDelimitedDecoder(
                channel, inbuf, metrics, 3);

        try {
            decoder.read(null);
            Assert.fail("IllegalArgumentException should have been thrown");
        } catch (IllegalArgumentException ex) {
            // expected
        }
    }