### Question:
TextAttributeConverter implements AttributeConverter<String, String> { @Override public String convertToDatabaseColumn(String text) { if (text != null) { return StringUtils.abbreviate(text, MAX_STRING_LENGTH); } return ""; }  @Override String convertToDatabaseColumn(String text); @Override String convertToEntityAttribute(String text);  }### Answer:
@Test void testConvertToDatabaseColumnWhenInputIsNotNull() { Assertions.assertEquals("test", textAttributeConverter.convertToDatabaseColumn("test")); }
@Test void testConvertToDatabaseColumnWhenInputIsNull() { Assertions.assertEquals("", textAttributeConverter.convertToDatabaseColumn(null)); }
@Test void testConvertToDatabaseColumnWhenInputIsLongerThan4000chars() { String expectedString = getLongStringInput().substring(0, 3997) .concat("..."); Assertions.assertEquals(expectedString, textAttributeConverter.convertToDatabaseColumn(getLongStringInput())); }