anchor.diff:  changing is signature to match the macro. If you don't have any setup
   function you need to define an empty 'BeforeEach()'.
   
  -* Dito for 'AfterEach()'.
  +* Ditto for 'AfterEach()'.
   
   * Remove any 'set_setup()' and 'set_teardown()'
   
  
positive.code: ~~~~~~~~
  
  For the tests to actually be run there needs to be a running test
  suite. (But see also <<runner>>.) We can create one especially for this test like so...
  
  [source,c]
  -----------------------------
  
negative.code: * Change the call to add the tests to 'add_test_with_context()'
  
  Done.
  
  It is good that this is a simple process, because you can change over
  from TDD style to BDD style in small steps. You can convert one source
  file at a time, by just following the recipe above. Everything will
  still work as before but your tests and code will likely improve.
  
  And once you have changed style you can fully benefit from the
  automatic discovery of tests as described in <<runner, Automatic Test
  Discovery>>.
  
  
  Changing Cgreen Reporting
  