[erlang-questions] EUnit and Servers

[Richard Carlsson]

The first of your test generators creates test objects as it should:

   init_test_() ->
     [?_assert(close_enough(air:new(21, 0.04, 78, 0.9),
                            get_val(box:init(100)))),
      ?_assert(close_enough(air:new(0.21, 0.0004, 0.78, 0.009),
                            get_val(box:init(1)))),
      ?_assertError(function_clause, box:init(-1))].

(i.e., using macro calls beginning with ?_...).

However, the rest of the generators are using the macro forms
that will execute immediately, when the generator itself runs:

   add_test_() ->
     {setup, fun() -> box:start_link(0) end, fun(_) -> box:stop() end,
      fun() ->
         {inorder,
             [?assertEqual(ok, box:add_air(get_val(box:init(100)))),
              ?assert(close_enough(box:get_air(200),
                                   get_val(box:init(100))))]}
      end}.

Just change those ?assert... to ?_assert... and try again.

This is also why the total count in the report was weird (just 6?):

   =======================================================
   Failed: 1. Skipped: 0. Passed: 5.


I know that EUnit is currently not good at telling you when your
generators are doing things that you probably didn't intend. I'll try
to improve that.

     /Richard