Reminded me of the time when I had to write a piece performance-sensitive code in C++ but I decided that unit tests are not performance sensitive so I wrote the

Reminded me of the time when I had to write a piece performance-sensitive code in C++ but I decided that unit tests are not performance sensitive so I wrote them in Go. Naturally I used SWIG. It worked quite well since the C++ code exposed a very simple interface. I thought I could leave it that way until one day a manager came and questioned why we had terrible unit test coverage. It turned out we had separate tools for measuring code coverage in C++ and Go and it was impossible to make them work together.