test('FilteringTextInputFormatter should filter independent of selection', () {
    final TextInputFormatter formatter = FilteringTextInputFormatter.deny('abc', replacementString: '*');

    const TextEditingValue oldValue = TextEditingValue();
    const TextEditingValue newValue = TextEditingValue(text: 'abcabcabc');

    final String filteredText = formatter.formatEditUpdate(oldValue, newValue).text;

    for (int i = 0; i < newValue.text.length; i += 1) {
      final String text = formatter.formatEditUpdate(
        oldValue,
        newValue.copyWith(selection: TextSelection.collapsed(offset: i)),
      ).text;
      expect(filteredText, text);
    }
  });