Tests: Add "daemon" ust regression test

[lttng-tools.git] / tests / regression / ust / daemon / test_daemon.py

diff --git a/tests/regression/ust/daemon/test_daemon.py b/tests/regression/ust/daemon/test_daemon.py
new file mode 100644 (file)
index 0000000..c9a9bff
--- /dev/null
+++ b/tests/regression/ust/daemon/test_daemon.py
@@ -0,0 +1,120 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) - 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License, version 2 only, as
+# published by the Free Software Foundation.
+#
+# This program 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 General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Software Foundation, Inc., 51
+# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import uuid
+import os
+import subprocess
+import re
+import shutil
+import sys
+
+test_path = os.path.dirname(os.path.abspath(__file__)) + "/"
+test_utils_path = test_path
+for i in range(4):
+    test_utils_path = os.path.dirname(test_utils_path)
+test_utils_path = test_utils_path + "/utils"
+sys.path.append(test_utils_path)
+from test_utils import *
+
+
+NR_TESTS = 6
+current_test = 1
+print("1..{0}".format(NR_TESTS))
+
+# Check if a sessiond is running... bail out if none found.
+if session_daemon_alive() == 0:
+    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.")
+
+session_info = create_session()
+enable_ust_tracepoint_event(session_info, "*")
+start_session(session_info)
+
+daemon_process = subprocess.Popen(test_path + "daemon", stdout=subprocess.PIPE)
+if sys.version_info >= (3, 3):
+    try:
+        daemon_process_return_code = daemon_process.wait(5)
+    except TimeoutExpired:
+        daemon_process.kill()
+        daemon_process_return_code = -1
+else:
+    daemon_process_return_code = daemon_process.wait()
+
+daemon_process_output = daemon_process.communicate()[0]
+daemon_process_output = daemon_process_output.decode('utf-8').splitlines()
+
+print_test_result(daemon_process_return_code == 0, current_test, "Successful call to daemon() and normal exit")
+current_test += 1
+
+if daemon_process_return_code != 0:
+    bail("Could not trigger tracepoints successfully. Abondoning test.")
+
+stop_session(session_info)
+
+if len(daemon_process_output) != 2:
+    bail("Unexpected output received from daemon test executable." + str(daemon_process_output))
+
+parent_pid = re.search(r"\d+", daemon_process_output[0]).group(0)
+daemon_pid = re.search(r"\d+", daemon_process_output[1]).group(0)
+
+try:
+    babeltrace_process = subprocess.Popen(["babeltrace", session_info.trace_path], stdout=subprocess.PIPE)
+except FileNotFoundError:
+    bail("Could not open babeltrace. Please make sure it is installed.")
+
+before_daemon_event_found = False
+before_daemon_event_pid = -1
+after_daemon_event_found = False
+after_daemon_event_pid = -1
+
+for event_line in babeltrace_process.stdout:
+    event_line = event_line.decode('utf-8').replace("\n", "")
+
+    if re.search(r"before_daemon", event_line) is not None:
+        if before_daemon_event_found:
+            bail("Multiple instances of the before_daemon event found. Please make sure only one instance of this test is runnning.")
+        before_daemon_event_found = True
+        match = re.search(r"(?<=pid = )\d+", event_line)
+
+        if match is not None:
+            before_daemon_event_pid = match.group(0)
+
+    if re.search(r"after_daemon", event_line) is not None:
+        if after_daemon_event_found:
+            bail("Multiple instances of the after_daemon event found. Please make sure only one instance of this test is runnning.")
+        after_daemon_event_found = True
+        match = re.search(r"(?<=pid = )\d+", event_line)
+
+        if match is not None:
+            after_daemon_event_pid = match.group(0)
+babeltrace_process.wait()
+
+print_test_result(babeltrace_process.returncode == 0, current_test, "Resulting trace is readable")
+current_test += 1
+
+if babeltrace_process.returncode != 0:
+    bail("Unreadable trace; can't proceed with analysis.")
+
+print_test_result(before_daemon_event_found, current_test, "before_daemon event found in resulting trace")
+current_test += 1
+print_test_result(before_daemon_event_pid == parent_pid, current_test, "Parent pid reported in trace is correct")
+current_test += 1
+print_test_result(before_daemon_event_found, current_test, "after_daemon event found in resulting trace")
+current_test += 1
+print_test_result(after_daemon_event_pid == daemon_pid, current_test, "Daemon pid reported in trace is correct")
+current_test += 1
+
+shutil.rmtree(session_info.tmp_directory)