title: Code-coverage in branches with different endianess
body: <p>Assume you have some code like:</p>
  
  <pre><code>if (endianness == ENDIAN_LITTLE)
  {
    // Do little-endian code here
  }
  else
  {
    // Do big-endian code here
  }
  </code></pre>
  
  <p>Are there some good patterns on how to cover both branches with some unit-tests on the same system (either bit- or little-endian)?</p>