}
    }

    @Nested
    @DisplayName("OEM Encoding Tests")
    class OEMEncodingTests {

        @Test
        @DisplayName("getOEMBytes should use configuration encoding")
        void testGetOEMBytes() {
            // Given
            Configuration mockConfig = mock(Configuration.class);
            when(mockConfig.getOemEncoding()).thenReturn("UTF-8");

            // When