When I was at uni, unit testing didn't exist. We had "black box" and "white box" testing (which kind of map to integration and unit testing). But if anything, the idea that developers needed to write any testing code at all was seen as a general failure of Computer Science. There was an emphasis on things like formal verification (so, using mathematics to verify that code is correct) and the hope that you could just specify what you wanted and the program would be automatically created.
So I'm not surprised that you lecturer wasn't a fan of unit testing. In some respects unit testing is an industry-wide wrong turn, but then unit testing is a lot easier than some of the alternatives (have a look at Z Notation - when I was at uni the course in it brought people to tears).
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