[lttng-tools] Tests: Added autoloading session test cases

lttng-sessiond can auto load sessions at startup;
- with "--load" option to lttng-sessiond, load one file
  or all sessions files in that directory
- from session files in $LTTNG_HOME/.lttng/sessions/auto/
- from session files in $sysconfdir/lttng/sessions/auto

This test case validate the two first scenarios.

Signed-off-by: Anders Wallin <wallinux at gmail.com>
---
 tests/fast_regression                         |   1 +
 .../regression/tools/save-load/test_autoload  | 107 ++++++++++++++++++
 2 files changed, 108 insertions(+)
 create mode 100755 tests/regression/tools/save-load/test_autoload

Merged in master, stable-2.10, and stable-2.9.

Thanks!
Jérémie

On Thu, May 17, 2018 at 10:50:41PM +0200, Anders Wallin wrote:
> lttng-sessiond can auto load sessions at startup;
> - with "--load" option to lttng-sessiond, load one file
>   or all sessions files in that directory
> - from session files in $LTTNG_HOME/.lttng/sessions/auto/
> - from session files in $sysconfdir/lttng/sessions/auto
> 
> This test case validate the two first scenarios.
> 
> Signed-off-by: Anders Wallin <wallinux at gmail.com>
> ---
>  tests/fast_regression                         |   1 +
>  .../regression/tools/save-load/test_autoload  | 107 ++++++++++++++++++
>  2 files changed, 108 insertions(+)
>  create mode 100755 tests/regression/tools/save-load/test_autoload
> 
> diff --git a/tests/fast_regression b/tests/fast_regression
> index bbce068f..2f02f872 100644
> --- a/tests/fast_regression
> +++ b/tests/fast_regression
> @@ -13,6 +13,7 @@ regression/tools/snapshots/test_ust_fast
>  regression/tools/snapshots/test_ust_streaming
>  regression/tools/save-load/test_save
>  regression/tools/save-load/test_load
> +regression/tools/save-load/test_autoload
>  regression/tools/mi/test_mi
>  regression/tools/wildcard/test_event_wildcard
>  regression/tools/crash/test_crash
> diff --git a/tests/regression/tools/save-load/test_autoload b/tests/regression/tools/save-load/test_autoload
> new file mode 100755
> index 00000000..26193be6
> --- /dev/null
> +++ b/tests/regression/tools/save-load/test_autoload
> @@ -0,0 +1,107 @@
> +#!/bin/bash
> +#
> +# Copyright (C) - 2018 Anders Wallin <wallinux at gmail.com>
> +#
> +# This library is free software; you can redistribute it and/or modify it under
> +# the terms of the GNU Lesser General Public License as published by the Free
> +# Software Foundation; version 2.1 of the License.
> +#
> +# This library is distributed in the hope that it will be useful, but WITHOUT
> +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
> +# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
> +# details.
> +#
> +# You should have received a copy of the GNU Lesser General Public License
> +# along with this library; if not, write to the Free Software Foundation, Inc.,
> +# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
> +
> +TEST_DESC="Auto load session(s)"
> +
> +CURDIR=$(dirname $0)/
> +CONFIG_DIR="${CURDIR}/configuration"
> +TESTDIR=$CURDIR/../../../
> +SESSIOND_BIN="lttng-sessiond"
> +RELAYD_BIN="lttng-relayd"
> +LTTNG_BIN="lttng"
> +export LTTNG_SESSION_CONFIG_XSD_PATH=$(readlink -m ${TESTDIR}../src/common/config/)
> +
> +DIR=$(readlink -f $TESTDIR)
> +
> +NUM_TESTS=10
> +
> +source $TESTDIR/utils/utils.sh
> +
> +# MUST set TESTDIR before calling those functions
> +plan_tests $NUM_TESTS
> +
> +print_test_banner "$TEST_DESC"
> +
> +function test_auto_load_file()
> +{
> +	diag "Test auto load file"
> +
> +	export LTTNG_HOME=
> +
> +	start_lttng_sessiond $CURDIR/load-42.lttng
> +	list_lttng_with_opts load-42
> +	stop_lttng_sessiond
> +}
> +
> +function test_auto_load_dir()
> +{
> +	diag "Test auto load directory"
> +
> +	export LTTNG_HOME=
> +	export LTTNG_DIR=$(mktemp -d)
> +	cp -f $CURDIR/load-42.lttng $LTTNG_DIR/
> +
> +	start_lttng_sessiond $LTTNG_DIR
> +	list_lttng_with_opts load-42
> +	stop_lttng_sessiond
> +
> +	rm -rf $LTTNG_DIR
> +}
> +
> +function test_auto_load_lttng_home()
> +{
> +	diag "Test auto load by setting LTTNG_HOME"
> +
> +	export LTTNG_HOME=$(mktemp -d)
> +	mkdir -p $LTTNG_HOME/.lttng/sessions/auto
> +	cp -f $CURDIR/load-42.lttng $LTTNG_HOME/.lttng/sessions/auto
> +
> +	start_lttng_sessiond
> +	list_lttng_with_opts load-42
> +	stop_lttng_sessiond
> +
> +	rm -rf $LTTNG_HOME
> +}
> +
> +TESTS=(
> +	test_auto_load_file
> +	test_auto_load_dir
> +	test_auto_load_lttng_home
> +)
> +
> +# Need to be sure that no lttng-sessiond is running
> +# - "stop_lttng_sessiond" is using the SESSIOND_PIDS created with
> +#   "start_lttng_sessiond"
> +# - "sigstop_lttng_sessiond" keep lttng-runas dangling
> +# - "stop_lttng_sessiond SIGKILL" will leave kernel modules loaded
> +# The code below are killing all lttng-* programs and remove the 
> +# the lttng kernel modules
> +SESSIOND_PIDS=$(pgrep $SESSIOND_MATCH)
> +kill $SESSIOND_PIDS
> +stop_lttng_sessiond
> +
> +for fct_test in ${TESTS[@]};
> +do
> +	TRACE_PATH=$(mktemp -d)
> +
> +	${fct_test}
> +	if [ $? -ne 0 ]; then
> +		break;
> +	fi
> +	# Only delete if successful
> +	rm -rf $TRACE_PATH
> +done
> -- 
> 2.17.0
> 
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