// Should still be able to read
        assertEquals('e', stream.read());
        assertEquals('s', stream.read());
        assertEquals('t', stream.read());
    }

    public void test_read_delegatesToUnderlying() throws IOException {
        // Test that read() delegates to underlying stream
        byte[] data = "ABC".getBytes();
        InputStream underlyingStream = new ByteArrayInputStream(data);