public void Replace_OneRunBldrEmptyTextEmptyRange_DoNotUpdateProperties() { TsStrBldr tsb = CreateOneRunBldr(); tsb.Replace(0, 0, string.Empty, new TsTextProps(FrenchWS)); Assert.That(tsb.Text, Is.EqualTo(EnglishFont1Text)); Assert.That(tsb.RunCount, Is.EqualTo(1)); int var; Assert.That(tsb.get_PropertiesAt(0).GetIntPropValues((int)FwTextPropType.ktptWs, out var), Is.EqualTo(EnglishWS)); }