tests/regression/ust/exit-fast/test_exit-fast.py

   1 #!/usr/bin/env python3
   2 #
   3 # Copyright (C) - 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   4 #
   5 # This program is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License, version 2 only, as
   7 # published by the Free Software Foundation.
   8 #
   9 # This program is distributed in the hope that it will be useful, but WITHOUT
  10 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12 # more details.
  13 #
  14 # You should have received a copy of the GNU General Public License along with
  15 # this program; if not, write to the Free Software Foundation, Inc., 51
  16 # Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17
  18 import os
  19 import subprocess
  20 import re
  21 import shutil
  22 import sys
  23
  24 test_path = os.path.dirname(os.path.abspath(__file__)) + "/"
  25 test_utils_path = test_path
  26 for i in range(4):
  27     test_utils_path = os.path.dirname(test_utils_path)
  28 test_utils_path = test_utils_path + "/utils"
  29 sys.path.append(test_utils_path)
  30 from test_utils import *
  31
  32
  33 normal_exit_message = "exit-fast tracepoint normal exit"
  34 suicide_exit_message = "exit-fast tracepoint suicide"
  35 NR_TESTS = 5
  36 current_test = 1
  37 print("1..{0}".format(NR_TESTS))
  38
  39 # Check if a sessiond is running... bail out if none found.
  40 if session_daemon_alive() == 0:
  41     bail("No sessiond running. Please make sure you are running this test with the \"run\" shell script and verify that the lttng tools are properly installed.")
  42
  43 session_info = create_session()
  44 enable_ust_tracepoint_event(session_info, "ust_tests_exitfast*")
  45 start_session(session_info)
  46
  47 test_env = os.environ.copy()
  48 test_env["LTTNG_UST_REGISTER_TIMEOUT"] = "-1"
  49
  50 exit_fast_process = subprocess.Popen(test_path + "exit-fast", stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, env=test_env)
  51 exit_fast_process.wait()
  52
  53 print_test_result(exit_fast_process.returncode == 0, current_test, "Test application exited normally")
  54 current_test += 1
  55
  56 exit_fast_process = subprocess.Popen([test_path + "exit-fast", "suicide"], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, env=test_env)
  57 exit_fast_process.wait()
  58
  59 stop_session(session_info)
  60
  61 # Check both events (normal exit and suicide messages) are present in the resulting trace
  62 try:
  63     babeltrace_process = subprocess.Popen(["babeltrace", session_info.trace_path], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
  64 except FileNotFoundError:
  65     bail("Could not open babeltrace. Please make sure it is installed.")
  66
  67 event_lines = []
  68 for event_line in babeltrace_process.stdout:
  69     event_line = event_line.decode('utf-8').replace("\n", "")
  70     event_lines.append(event_line)
  71 babeltrace_process.wait()
  72
  73 print_test_result(babeltrace_process.returncode == 0, current_test, "Resulting trace is readable")
  74 current_test += 1
  75
  76 if babeltrace_process.returncode != 0:
  77     bail("Unreadable trace; can't proceed with analysis.")
  78
  79 print_test_result(len(event_lines) == 2, current_test, "Correct number of events found in resulting trace")
  80 current_test += 1
  81
  82 if len(event_lines) != 2:
  83     bail("Unexpected number of events found in resulting trace (" + session_info.trace_path + ")." )
  84
  85 match = re.search(r".*message = \"(.*)\"", event_lines[0])
  86 print_test_result(match is not None and match.group(1) == normal_exit_message, current_test,\
  87                       "Tracepoint message generated during normal exit run is present in trace and has the expected value")
  88 current_test += 1
  89
  90 match = re.search(r".*message = \"(.*)\"", event_lines[1])
  91 print_test_result(match is not None and match.group(1) == suicide_exit_message, current_test,\
  92                       "Tracepoint message generated during suicide run is present in trace and has the expected value")
  93 current_test += 1
  94
  95 shutil.rmtree(session_info.tmp_directory)