why does ts call (an undefined) end_per_suite?

["Gösta Ask (Mobile Arts)"]

Hi,
I have tried to use a Test Suite which (beside the Test Cases) only has a init_per_suite/1
definition.

-export([init_per_suite/1]).
-export([all/1,
          tc_register_ok/1, tc_register_nok/1, tc_register_other/1,
	 tc_activate_ok/1, tc_activate_other/1, tc_deactivate_ok/1,
	 tc_deactivate_other/1
         ]).

  all/1 looks this way

%    Exported Test Specification (executed once)
all(suite) ->
     [tc_register_ok, tc_register_nok, tc_register_other,
      tc_activate_ok, tc_activate_other, tc_deactivate_ok, tc_deactivate_other].

Yet the following is reported in the log:

[...]
8	twoprim_ST_SA_FO_C_SUITE  tc_deactivate_other  8.313 s	FAILED	{twoprim_ST_SA_FO_C_SUITE,tc_deactivate_other}
Fatal,error or alarm
9	twoprim_ST_SA_FO_C_SUITE  end_per_suite		0.000 s	FAILED	{twoprim_ST_SA_FO_C_SUITE,end_per_suite}
[...]

And if you look at the log for Test Case 9 you can see that it tries to call end_per_suite.
Why is that? Is end_per_suite somehow linked to init_per_suite? Do you have to define
both or none?

Best regards,
  /Gösta Ask
   Mobile Arts

====================================== LOG ==========================================
=== source code for twoprim_ST_SA_FO_C_SUITE:end_per_suite/1

=== Test case started with:
twoprim_ST_SA_FO_C_SUITE:end_per_suite[[{nr_of_errors,0},
                                         {data_dir,
                                             "/home/askg/TestDir/TestServer/tusker_test/twoprim_ST_SA_FO_C_SUITE_data/"},
                                         {priv_dir,
                                             "/home/askg/TestDir/TestServer/test_server/tusker.logs/run.2004-07-12_14.19.21/log_private"},
                                         {nodes,[]}]]

=== Current directory is "/home/askg/TestDir/TestServer/test_server"

=== Started at 2004-07-12 14:20:57
=== Ended at 2004-07-12 14:20:57
=== location {twoprim_ST_SA_FO_C_SUITE,end_per_suite}
=== reason={undef,[{twoprim_ST_SA_FO_C_SUITE,
                    end_per_suite,
                    [[{nr_of_errors,0},
                      {data_dir,"/home/askg/TestDir/TestServer/tusker_test/twoprim_ST_SA_FO_C_SUITE_data/"},
                      {priv_dir,"/home/askg/TestDir/TestServer/test_server/tusker.logs/run.2004-07-12_14.19.21/log_private"},
                      {nodes,[]}]]},
                {test_server,my_apply,3},
                {test_server,ts_tc,3},
                {test_server,run_test_case_eval,6}]}