public void Color_Method()
{
Assert.Throws <ArgumentNullException>(() => IYandexMoneyButtonWidgetExtensions.Color(null, YandexMoneyButtonColor.Orange));
new YandexMoneyButtonWidget().Do(widget =>
{
Assert.True(ReferenceEquals(widget.Color(YandexMoneyButtonColor.Black), widget));
Assert.Equal("black", widget.Color());
});
new YandexMoneyButtonWidget().Do(widget => Assert.Equal("orange", widget.Color(YandexMoneyButtonColor.Orange).Color()));
new YandexMoneyButtonWidget().Do(widget => Assert.Equal("white", widget.Color(YandexMoneyButtonColor.White).Color()));
}
