public void Setup() { _inputMock = new Mock <InputHandler>(standartNumberFormatInfo, standartCoordinatesDelimiter); _inputMock.Setup(_ => _.Parse(It.IsAny <object>())).Returns((object obj) => { var handler = new StringInput(standartNumberFormatInfo, standartCoordinatesDelimiter); handler.OnIncorrect += Handler_OnIncorrect; handler.OnVeryBigDigit += Handler_OnVeryBigDigit; return(handler.Parse(obj)); }); _correctCoordinates = _correctDigitStr + "," + _correctDigitStr; }