String result = pacStream.readString();
        assertEquals("", result);
    }

    @Test
    @DisplayName("Test PacUnicodeString check method with null pointer")
    void testPacUnicodeStringCheckWithNullPointer() throws Exception {
        // When pointer is 0, the string should be null
        PacUnicodeString unicodeString = new PacUnicodeString((short) 0, (short) 0, 0);