byte[] buffer = new byte[5];
        int bytesRead = stream.read(buffer);

        assertEquals(5, bytesRead);
        assertEquals("Hello", new String(buffer));
    }

    public void test_readBytesWithOffset_delegatesToUnderlying() throws IOException {
        // Test that read(byte[], int, int) delegates to underlying stream
        byte[] data = "0123456789".getBytes();