Skip pre/post test IO suite if cover or debug is running

OTP-13535

The return value of ct:get_timetrap_info/0 has been modified.

3 files changed, 30 insertions, 18 deletions

diff --git a/lib/common_test/doc/src/ct.xml b/lib/common_test/doc/src/ct.xml
index a87be21d73..438099c074 100644
--- a/lib/common_test/doc/src/ct.xml
+++ b/lib/common_test/doc/src/ct.xml
@@ -601,18 +601,21 @@
     </func>
 
     <func>
-      <name>get_timetrap_info() -&gt; {Time, Scale}</name>
+      <name>get_timetrap_info() -&gt; {Time, {Scaling,ScaleVal}}</name>
       <fsummary>Reads information about the timetrap set for the current
         test case.</fsummary>
       <type>
         <v>Time = integer() | infinity</v>
-        <v>Scale = true | false</v>
+        <v>Scaling = true | false</v>
+        <v>ScaleVal = integer()</v>
       </type>
      <desc><marker id="get_timetrap_info-0"/>
         <p>Reads information about the timetrap set for the current test
-          case. <c>Scale</c> indicates if <c>Common Test</c> will attempt
+          case. <c>Scaling</c> indicates if <c>Common Test</c> will attempt
           to compensate timetraps automatically for runtime delays
-          introduced by, for example, tools like cover.</p>
+          introduced by, for example, tools like cover. <c>ScaleVal</c> is
+	  the value of the current scaling multipler (always 1 if scaling is
+	  disabled). Note the <c>Time</c> is not the scaled result.</p>
       </desc>
     </func>
 
diff --git a/lib/common_test/src/ct_util.erl b/lib/common_test/src/ct_util.erl
index b7fa7947e2..3561a0a2d3 100644
--- a/lib/common_test/src/ct_util.erl
+++ b/lib/common_test/src/ct_util.erl
@@ -459,6 +459,7 @@ loop(Mode,TestData,StartDir) ->
 		    error:badarg -> []
 		end,
 	    ct_hooks:terminate(Callbacks),
+
 	    close_connections(ets:tab2list(?conn_table)),
 	    ets:delete(?conn_table),
 	    ets:delete(?board_table),
diff --git a/lib/common_test/test/ct_pre_post_test_io_SUITE.erl b/lib/common_test/test/ct_pre_post_test_io_SUITE.erl
index e9f8319b60..bf3eeee328 100644
--- a/lib/common_test/test/ct_pre_post_test_io_SUITE.erl
+++ b/lib/common_test/test/ct_pre_post_test_io_SUITE.erl
@@ -44,13 +44,29 @@
 %% instance, the tests need to be performed on a separate node (or
 %% there will be clashes with logging processes etc).
 %%--------------------------------------------------------------------
+suite() ->
+    [{ct_hooks,[ts_install_cth]},
+     {timetrap,{seconds,120}}].
+
+all() ->
+    [
+     pre_post_io
+    ].
+
 init_per_suite(Config) ->
-    DataDir = ?config(data_dir, Config),
-    CTH = filename:join(DataDir, "cth_ctrl.erl"),
-    ct:pal("Compiling ~p: ~p",
-	   [CTH,compile:file(CTH,[{outdir,DataDir},debug_info])]),
-    ct_test_support:init_per_suite([{path_dirs,[DataDir]},
-				    {start_sasl,true} | Config]).
+    TTInfo = {_T,{_Scaled,ScaleVal}} = ct:get_timetrap_info(),
+    ct:pal("Timetrap info = ~w", [TTInfo]),
+    if ScaleVal > 1 ->
+	    {skip,"Skip on systems running e.g. cover or debug!"};
+       ScaleVal =< 1 ->
+	    DataDir = ?config(data_dir, Config),
+	    CTH = filename:join(DataDir, "cth_ctrl.erl"),
+	    ct:pal("Compiling ~p: ~p",
+		   [CTH,compile:file(CTH,[{outdir,DataDir},
+					  debug_info])]),
+	    ct_test_support:init_per_suite([{path_dirs,[DataDir]},
+					    {start_sasl,true} | Config])
+    end.
 
 end_per_suite(Config) ->
     ct_test_support:end_per_suite(Config).
@@ -61,14 +77,6 @@ init_per_testcase(TestCase, Config) ->
 end_per_testcase(TestCase, Config) ->
     ct_test_support:end_per_testcase(TestCase, Config).
 
-suite() -> [{ct_hooks,[ts_install_cth]},
-	    {timetrap,{seconds,120}}].
-
-all() ->
-    [
-     pre_post_io
-    ].
-
 %%--------------------------------------------------------------------
 %% TEST CASES
 %%--------------------------------------------------------------------