anchor.diff:      Pid = spawn(fun() -> ok end),
       Pid ! foo,
       ok.
  +
  +-spec test_send_2() -> 'ok'.
   
   test_send_2() ->
       Pid = spawn(fun() -> ok end),
  
positive.code:     Result = receive after 42 -> ok end,
      ?assertEqual(ok, Result).
  
  -spec test_receive_after_with_pattern() -> 'result2'.
  
  test_receive_after_with_pattern() ->
      Self = self(),
  
negative.code: test_send_receive_3() ->
      Self = self(),
      Pid = spawn(fun() -> Self ! foo, receive bar -> ok end end),
      receive foo -> Pid ! bar, ok end.
  
  -spec test_receive_after_no_patterns() -> 'ok'.
  
  