IgnoreCloseInputStream stream = new IgnoreCloseInputStream(underlyingStream);

        // ByteArrayInputStream supports mark
        assertTrue(stream.markSupported());
    }

    public void test_markAndReset_delegatesToUnderlying() throws IOException {
        // Test that mark() and reset() delegate to underlying stream
        byte[] data = "ABCDEFGH".getBytes();
        InputStream underlyingStream = new ByteArrayInputStream(data);