I did this for my last job, although I went into the office and they did pay me for the day. When I apply for my next job, I'm hoping they do this too as it's

I did this for my last job, although I went into the office and they did pay me for the day. When I apply for my next job, I'm hoping they do this too as it's a chance to demonstrate my skills. I wouldn't be bothered if they expected me to do this remotely and unpaid (of course, massive difference if it's a week's work). A popular alternative is that they call you into the office and basically give you an exam on a certain language/technology which you have to pass in an interview situation without being able to refer to the Internet. I'd hate this and argue that it's a pretty false way to estimate productivity - there's gaps in everyone's knowledge, good coders are people bright enough to Google for solutions, determine which are actually 'good' and implement them quickly.