[ct] Add 'keep_logs' option

If setting the value for this option to an integer, N, common_test
will remove all ct_run.* directories in the current log directory,
except the N newest.

The default value for the 'keep_logs' option is 'all', which means that
no logs will be deleted.

'keep_logs' can be used in combination with refresh_logs, or in a normal
common_test test run.

1 files changed, 32 insertions, 0 deletions

diff --git a/lib/common_test/test/ct_keep_logs_SUITE_data/keep_logs_SUITE.erl b/lib/common_test/test/ct_keep_logs_SUITE_data/keep_logs_SUITE.erl
new file mode 100644
index 0000000000..2bccae564b
--- /dev/null
+++ b/lib/common_test/test/ct_keep_logs_SUITE_data/keep_logs_SUITE.erl
@@ -0,0 +1,32 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2009-2016. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(keep_logs_SUITE).
+
+-compile(export_all).
+
+-include_lib("common_test/include/ct.hrl").
+
+suite() ->
+    [].
+all() ->
+    [test_case].
+
+test_case(_Config) ->
+    ok.