try (InputStream stream = cache.getInputStream()) {
            for (int i = 0; i < 256; i++) {
                int byteValue = stream.read();
                assertEquals("Byte at position " + i, i & 0xFF, byteValue);
            }
            assertEquals(-1, stream.read()); // End of stream
        }
    }

    @Test

</pre>

<p>
An unrecognized character following a backslash in a rune literal is illegal.
</p>

<pre class="ebnf">
rune_lit         = "'" ( unicode_value | byte_value ) "'" .
unicode_value    = unicode_char | little_u_value | big_u_value | escaped_char .
byte_value       = octal_byte_value | hex_byte_value .
octal_byte_value = `\` octal_digit octal_digit octal_digit .
hex_byte_value   = `\` "x" hex_digit hex_digit .