Google Software Engineer interview questions

Phone interview

The recruiter contacted me via LinkedIn and was very friendly and nice. I was then contacted by a software developer by phone and was asked two rather simple questions. I approached the questions too much like an undergraduate student and they decided to not go any further with me. The major aspect of the interview was concerned with end cases and rare cases that could happen. I was also asked to design a series of unit tests for a certain method. I did not have to do any coding, just explain what I would test for and why.