When a test hangs in a loop, the small green progress bar in the test runner does not proceed, but there is no way to stop the test run. Or is there?
VS 2013
Edit: This occured when using the XUnit TestRunner. The Cancel button simply did not show up. After testing various test runners in a new solution, it turned out, that it works with all of them. Finally it also worked with my original solution. So there was some anomaly in the state of my VS environment that caused cancel to disapper.