What Is the 'Coffee Cup Test'? Watch Out For This Tricky Interview Trend. Some people find this recent hiring trend impractical, while others think it’s a sign of character. Either way, here’s what you should know about it. Previous Article 3 Energy Stocks With Strong Momentum Behind Them in September Next Article The September Semiconductor Stock Showdown: Advanced Micro Devices (AMD) vs. Applied Materials (AMAT)