title: How to test scientific software?
body: <p>I'm convinced that software testing indeed is very important, especially in science. However, over the last 6 years, I never have come across any scientific software project which was under regular tests (and most of them were not even version controlled). </p>
  
  <p>Now I'm wondering how you deal with software tests for scientific codes (numerical computations). </p>
  
  <p>From my point of view, standard unit tests often miss the point, since there is no exact result, so using <code>assert(a == b)</code> might prove a bit difficult due to "normal" numerical errors. </p>
  
  <p>So I'm looking forward to reading your thoughts about this. </p>