### Question:
ToCharConverter implements Converter { @Override public Character convert(Class<?> targetClass, String strVal) throws ConvertException { if (strVal == null) { return null; } if (strVal.length() == 1) { return strVal.charAt(0); } throw new ConvertException(String.format("Failed to convert '%s' to character", strVal)); }  @Override Character convert(Class<?> targetClass, String strVal);  }### Answer:
@Test(dataProvider = "validInput") public void testValidInputConversion(String input, Character expectedChar) { Character actualChar = toCharConverter.convert(Character.class, input); Assert.assertEquals(actualChar, expectedChar); }
@Test(dataProvider = "invalidInput", expectedExceptions = {ConvertException.class}) public void testInvalidInputConversion(String input) { toCharConverter.convert(Character.class, input); }