I was invited to complete a lengthy online test which composed of 2-3 parts to a professional narrative report to outline findings of a background check and further research of a given topic. The other one was to write a summary of a news report. I don't remember the third task. The timeframe was about 2 hours. They did not get back to me until MONTHS LATER that they wouldn't proceed to the next step. I advise to the HR department that if you're going to ask candidates to complete lengthy assignments, at least give some feedback or reply back asap about the next process.