assertEquals(0, result.length, "Should return empty array for null string");
        }

        @Test
        @DisplayName("getBytes should encode string with specified charset")
        void testGetBytesWithCharset() {
            // When
            byte[] utf8Bytes = Strings.getBytes(TEST_STRING, StandardCharsets.UTF_8);
            byte[] utf16Bytes = Strings.getBytes(TEST_STRING, StandardCharsets.UTF_16LE);