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Neels Hofmeyr gerrit-no-reply at lists.osmocom.orgHello Harald Welte,
I'd like you to reexamine a change. Please visit
https://gerrit.osmocom.org/4272
to look at the new patch set (#3).
add osmo_verify_transcript_{vty,ctrl}.py for easier vty and ctrl testing
While adding VTY and CTRL tests to new programs like OsmoHLR, I wanted to have
a simple way to translate a VTY interaction transcript to a VTY python test. It
is fairly trivial to simply read in a transcript, extract both the commands to
send as well as the expected results, and to verify these without having to
write one line of application-specific code. From there it was just a little
step to allow the same for CTRL interaction.
With osmo_verify_transcript_vty.py and osmo_verify_transcript_ctrl.py, it is
possible to have a simple text file of a telnet VTY or CTRL interface
interaction and run it against a given application. With the --update option,
the scripts run the given command and rewrite the transcript file to whatever
the application currently produces as response. Backed by version control, it
is super easy to tweak commands, --update the test results and verify that only
the desired bits changed. A '...' wildcard can skip any number of lines in the
expected result and is usually preserved during --update.
This python3 implementation is independent from the previous obscvty
implementations.
Take the opportunity to clarify/fix a few aspects: for example, it is now
possible to verify the hints that the interactive VTY displays when the user
enters '?' in various places, and to evaluate the prompt character '>'/'#'.
Unitl now, code is duplicated/scattered across various vty_test_runner.py
scripts in different git repositories. Now, a VTY or CTRL transcript is enough
to put a complete test in place.
The simplest invocation is directly from the Makefile, feeding an application
commandline, the proper port number to contact it and e.g. a VTY prompt name.
This new code is also usable as python modules, to be able to build more
complex tests that require specialized intermediate actions, possibly
coordinating launch of applications or data manipulation.
The first repository to employ this is osmo-hlr.git. See change-ids
I42b3b70a0439a8f2e4964d7cc31e593c1f0d7537 for VTY and
Iff93abe370b8f3ecf42082d1d0eaa1fbeca5b122 for CTRL.
Change-Id: Id47331009910e651372b9c9c76e12f2e8964cc2c
---
M osmopy/__init__.py
A osmopy/osmo_verify_transcript_common.py
A osmopy/osmo_verify_transcript_ctrl.py
A osmopy/osmo_verify_transcript_vty.py
M setup.py
5 files changed, 677 insertions(+), 2 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/python/osmo-python-tests refs/changes/72/4272/3
diff --git a/osmopy/__init__.py b/osmopy/__init__.py
index e211108..01ff3de 100644
--- a/osmopy/__init__.py
+++ b/osmopy/__init__.py
@@ -3,4 +3,7 @@
__all__ = ['obscvty', 'osmodumpdoc', 'osmotestconfig', 'osmotestvty',
'osmoutil',
- 'osmo_ipa',]
+ 'osmo_ipa',
+ 'osmo_verify_transcript_common',
+ 'osmo_verify_transcript_vty',
+ 'osmo_verify_transcript_ctrl']
diff --git a/osmopy/osmo_verify_transcript_common.py b/osmopy/osmo_verify_transcript_common.py
new file mode 100644
index 0000000..e4b5553
--- /dev/null
+++ b/osmopy/osmo_verify_transcript_common.py
@@ -0,0 +1,372 @@
+#!/usr/bin/env python3
+#
+# (C) 2017 by sysmocom s.f.m.c. GmbH <info at sysmocom.de>
+# All rights reserved.
+#
+# Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# 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, see <http://www.gnu.org/licenses/>.
+
+'''
+Common code for verify_transcript_vty.py and verify_transcript_ctrl.py.
+'''
+
+import argparse
+import sys
+import os
+import subprocess
+import time
+import traceback
+import socket
+import shlex
+
+
+class Interact:
+
+ class StepBase:
+ command = None
+ result = None
+ leading_blanks = None
+
+ def __init__(self):
+ self.result = []
+
+ def verify_interact_state(self, interact_instance):
+ # for example to verify that the last VTY prompt received shows the
+ # right node.
+ pass
+
+ def command_str(self, interact_instance=None):
+ return self.command
+
+ def __str__(self):
+ return '%s\n%s' % (self.command_str(), '\n'.join(self.result))
+
+ @staticmethod
+ def is_next_step(line, interact_instance):
+ assert not "implemented by InteractVty.VtyStep and InteractCtrl.CtrlStep"
+
+ socket = None
+
+ def __init__(self, step_class, port, host, verbose=False, update=False):
+ '''
+ host is the hostname to connect to.
+ port is the CTRL port to connect on.
+ '''
+ self.Step = step_class
+ self.port = port
+ self.host = host
+ self.verbose = verbose
+ self.update = update
+
+ def connect(self):
+ assert self.socket is None
+ retries = 30
+ took = 0
+ while True:
+ took += 1
+ try:
+ self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+ self.socket.setblocking(1)
+ self.socket.connect((self.host, int(self.port)))
+ except IOError:
+ retries -= 1
+ if retries <= 0:
+ raise
+ time.sleep(.1)
+ continue
+ break
+
+ def close(self):
+ if self.socket is None:
+ return
+ self.socket.close()
+ self.socket = None
+
+ def command(self, command):
+ assert not "implemented separately by InteractVty and InteractCtrl"
+
+ def verify_transcript_file(self, transcript_file):
+ with open(transcript_file, 'r') as f:
+ content = f.read()
+
+ try:
+ result = self.verify_transcript(content)
+ except:
+ print('Error while verifying transcript file %r' % transcript_file, file=sys.stderr)
+ sys.stderr.flush()
+ raise
+
+ if not self.update:
+ return
+ content = '\n'.join(result)
+ with open(transcript_file, 'w') as f:
+ f.write(content)
+
+ def verify_transcript(self, transcript):
+ ''''
+ transcript is a "screenshot" of a session, a multi-line string
+ including commands and expected results.
+ Feed commands to self.command() and verify the expected results.
+ '''
+
+ # parse steps
+ steps = []
+ step = None
+ blank_lines = 0
+ for line in transcript.splitlines():
+ if not line:
+ blank_lines += 1
+ continue
+ next_step_started = self.Step.is_next_step(line, self)
+ if next_step_started:
+ if step:
+ steps.append(step)
+ step = next_step_started
+ step.leading_blanks = blank_lines
+ blank_lines = 0
+ elif step:
+ # we only count blank lines directly preceding the start of a
+ # next step. Insert blank lines in the middle of a response
+ # back into the response:
+ if blank_lines:
+ step.result.extend([''] * blank_lines)
+ blank_lines = 0
+ step.result.append(line)
+ if step:
+ steps.append(step)
+ step = None
+
+ actual_result = []
+
+ # run steps
+ step_nr = 0
+ for step in steps:
+ step_nr += 1
+ try:
+ if self.verbose:
+ if step.leading_blanks:
+ print('\n' * step.leading_blanks, end='')
+ print(step.command_str())
+ sys.stdout.flush()
+
+ step.verify_interact_state(self)
+
+ res = self.command(step.command)
+
+ if self.verbose:
+ sys.stderr.flush()
+ sys.stdout.flush()
+ print('\n'.join(res))
+ sys.stdout.flush()
+
+ if step.leading_blanks:
+ actual_result.extend([''] * step.leading_blanks)
+ actual_result.append(step.command_str(self))
+
+ match_result = self.match_lines(step.result, res)
+
+ if self.update:
+ if match_result is True:
+ # preserve any wildcards
+ actual_result.extend(step.result)
+ else:
+ # mismatch, take exactly what came in
+ actual_result.extend(res)
+ continue
+ if match_result is not True:
+ raise Exception('Result mismatch:\n%s\n\nExpected:\n[\n%s\n]\n\nGot:\n[\n%s\n%s\n]'
+ % (match_result, step, step.command_str(), '\n'.join(res)))
+ except:
+ print('Error during transcript step %d:\n[\n%s\n]' % (step_nr, step),
+ file=sys.stderr)
+ sys.stderr.flush()
+ raise
+
+ # final line ending
+ actual_result.append('')
+ return actual_result
+
+ @staticmethod
+ def match_lines(expect, got):
+ '''
+ Match two lists of strings, allowing certain wildcards:
+ - In 'expect', if a line is exactly '...', it matches any number of
+ arbitrary lines in 'got'; the implementation is trivial and skips
+ lines to the first occurence in 'got' that continues after '...'.
+
+ Return 'True' on match, or a string describing the mismatch.
+ '''
+ def match_line(expect_line, got_line):
+ return expect_line == got_line
+
+ e = 0
+ g = 0
+ while e < len(expect):
+ if expect[e] == '...':
+ e += 1
+
+ if e >= len(expect):
+ # anything left in 'got' is accepted.
+ return True
+
+ # look for the next occurence of the expected line in 'got'
+ while g < len(got) and not match_line(expect[e], got[g]):
+ g += 1
+ continue
+
+ if g >= len(got):
+ return 'Cannot find line %r' % expect[e]
+
+ if not match_line(expect[e], got[g]):
+ return 'Mismatch:\nExpect:\n%r\nGot:\n%r' % (expect[e], got[g])
+
+ e += 1
+ g += 1
+
+ if g < len(got):
+ return 'Did not expect line %r' % got[g]
+ return True
+
+def end_process(proc):
+ if not proc:
+ return
+
+ rc = proc.poll()
+ if rc is not None:
+ print('Process has already terminated with', rc)
+ proc.wait()
+ return
+
+ proc.terminate()
+ time_to_wait_for_term = 5
+ wait_step = 0.001
+ waited_time = 0
+ while True:
+ # poll returns None if proc is still running
+ if proc.poll() is not None:
+ break
+ waited_time += wait_step
+ # make wait_step approach 1.0
+ wait_step = (1. + 5. * wait_step) / 6.
+ if waited_time >= time_to_wait_for_term:
+ break
+ time.sleep(wait_step)
+
+ if proc.poll() is None:
+ # termination seems to be slower than that, let's just kill
+ proc.kill()
+ print("Killed child process")
+ elif waited_time > .002:
+ print("Terminating took %.3fs" % waited_time)
+ proc.wait()
+
+class Application:
+ proc = None
+ _devnull = None
+
+ @staticmethod
+ def devnull():
+ if Application._devnull is None:
+ Application._devnull = open(os.devnull, 'w')
+ return Application._devnull
+
+ def __init__(self, command_tuple, purge_output=True):
+ self.command_tuple = command_tuple
+ self.purge_output = purge_output
+
+ def run(self):
+ out_err = None
+ if self.purge_output:
+ out_err = Application.devnull()
+
+ print('Launching: cd %r; %s' % (os.getcwd(), ' '.join(self.command_tuple)))
+ self.proc = subprocess.Popen(self.command_tuple, stdout=out_err, stderr=out_err)
+
+ def stop(self):
+ end_process(self.proc)
+
+def verify_application(command_tuple, interact, transcript_file, verbose):
+ passed = None
+ application = None
+
+ sys.stdout.flush()
+ sys.stderr.flush()
+
+ if command_tuple:
+ application = Application(command_tuple, purge_output=not verbose)
+ application.run()
+
+ try:
+ interact.connect()
+ interact.verify_transcript_file(transcript_file)
+ passed = True
+ except:
+ traceback.print_exc()
+ passed = False
+ interact.close()
+
+ if application:
+ application.stop()
+
+ sys.stdout.flush()
+ sys.stderr.flush()
+
+ return passed
+
+def common_parser():
+ parser = argparse.ArgumentParser()
+ parser.add_argument('-r', '--run', dest='command_str',
+ help='command to run to launch application to test,'
+ ' including command line arguments. If omitted, no'
+ ' application is launched.')
+ parser.add_argument('-p', '--port', dest='port',
+ help="Port that the application opens.")
+ parser.add_argument('-H', '--host', dest='host', default='localhost',
+ help="Host that the application opens the port on.")
+ parser.add_argument('-u', '--update', dest='update', action='store_true',
+ help='Do not verify, but OVERWRITE transcripts based on'
+ ' the applications current behavior. OVERWRITES TRANSCRIPT'
+ ' FILES.')
+ parser.add_argument('-v', '--verbose', action='store_true',
+ help='Print commands and application output')
+ parser.add_argument('transcript_files', nargs='*', help='transcript files to verify')
+ return parser
+
+def main(command_str, transcript_files, interact, verbose):
+
+ if command_str:
+ command_tuple = shlex.split(command_str)
+ else:
+ command_tuple = None
+
+ results = []
+ for t in transcript_files:
+ passed = verify_application(command_tuple=command_tuple,
+ interact=interact,
+ transcript_file=t,
+ verbose=verbose)
+ results.append((passed, t))
+
+ print('\nRESULTS:')
+ all_passed = True
+ for passed, t in results:
+ print('%s: %s' % ('pass' if passed else 'FAIL', t))
+ all_passed = all_passed and passed
+ print()
+
+ if not all_passed:
+ sys.exit(1)
+
+# vim: tabstop=4 shiftwidth=4 expandtab nocin ai
diff --git a/osmopy/osmo_verify_transcript_ctrl.py b/osmopy/osmo_verify_transcript_ctrl.py
new file mode 100755
index 0000000..7afe4bf
--- /dev/null
+++ b/osmopy/osmo_verify_transcript_ctrl.py
@@ -0,0 +1,120 @@
+#!/usr/bin/env python3
+#
+# (C) 2017 by sysmocom s.f.m.c. GmbH <info at sysmocom.de>
+# All rights reserved.
+#
+# Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# 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, see <http://www.gnu.org/licenses/>.
+
+'''
+Run CTRL test transcripts against a given application.
+
+A CTRL transcript contains CTRL commands and their expected results.
+It looks like:
+
+"
+SET 1 var val
+SET_REPLY 1 var OK
+GET 2 var
+GET_REPLY 2 var val
+"
+
+The application to be tested is described by
+- a binary to run,
+- command line arguments to pass to the binary,
+- the CTRL port.
+
+This module can either be run directly to run or update a given CTRL transcript,
+or it can be imported as a module to run more complex setups.
+'''
+
+import re
+
+from osmopy.osmo_verify_transcript_common import *
+from osmopy.osmo_ipa import Ctrl, IPA
+
+class InteractCtrl(Interact):
+ next_id = 1
+ keep_ids = True
+ re_command = re.compile('^(SET|GET) ([^ ]*) (.*)$')
+
+ class CtrlStep(Interact.StepBase):
+
+ @staticmethod
+ def is_next_step(line, interact_instance):
+ m = InteractCtrl.re_command.match(line)
+ if not m:
+ return None
+ next_step = InteractCtrl.CtrlStep()
+
+ set_get = m.group(1)
+ cmd_id = m.group(2)
+ var_val = m.group(3)
+ if not interact_instance.keep_ids:
+ cmd_id = interact_instance.next_id
+ interact_instance.next_id += 1
+ next_step.command = '%s %s %s' % (set_get, cmd_id, var_val)
+
+ return next_step
+
+ def __init__(self, port, host, verbose=False, update=False, keep_ids=True):
+ if not update:
+ keep_ids = True
+ self.keep_ids = keep_ids
+ super().__init__(InteractCtrl.CtrlStep, port=port, host=host, verbose=verbose, update=update)
+
+ def connect(self):
+ self.next_id = 1
+ super().connect()
+
+ def send(self, data):
+ data = Ctrl().add_header(data)
+ return self.socket.send(data) == len(data)
+
+ def receive(self):
+ responses = []
+ data = self.socket.recv(4096)
+ while (len(data)>0):
+ (response_with_header, data) = IPA().split_combined(data)
+ response = Ctrl().rem_header(response_with_header)
+ responses.append(response.decode('utf-8'))
+ return responses
+
+ def command(self, command):
+ assert self.send(command)
+ res = self.receive()
+ split_responses = []
+ for r in res:
+ split_responses.extend(r.splitlines())
+ sys.stdout.flush()
+ sys.stderr.flush()
+ return split_responses
+
+if __name__ == '__main__':
+ parser = common_parser()
+ parser.add_argument('-i', '--keep-ids', dest='keep_ids', action='store_true',
+ help='With --update, default is to overwrite the command IDs'
+ ' so that they are consecutive numbers starting from 1.'
+ ' With --keep-ids, do not change these command IDs.')
+ args = parser.parse_args()
+
+ interact = InteractCtrl(args.port, args.host, args.verbose, args.update, args.keep_ids)
+
+ main(command_str=args.command_str,
+ transcript_files=args.transcript_files,
+ interact=interact,
+ verbose=args.verbose)
+
+# vim: tabstop=4 shiftwidth=4 expandtab nocin ai
diff --git a/osmopy/osmo_verify_transcript_vty.py b/osmopy/osmo_verify_transcript_vty.py
new file mode 100755
index 0000000..3a4d630
--- /dev/null
+++ b/osmopy/osmo_verify_transcript_vty.py
@@ -0,0 +1,178 @@
+#!/usr/bin/env python3
+#
+# (C) 2017 by sysmocom s.f.m.c. GmbH <info at sysmocom.de>
+# All rights reserved.
+#
+# Author: Neels Hofmeyr <nhofmeyr at sysmocom.de>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# 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, see <http://www.gnu.org/licenses/>.
+
+'''
+Run VTY test transcripts against a given application.
+
+A VTY transcript contains VTY commands and their expected results.
+It looks like:
+
+"
+OsmoHLR> enable
+
+OsmoHLR# subscriber show imsi 123456789023000
+% No subscriber for imsi = '123456789023000'
+OsmoHLR# subscriber show msisdn 12345
+% No subscriber for msisdn = '12345'
+
+OsmoHLR# subscriber create imsi 123456789023000
+% Created subscriber 123456789023000
+ ID: 1
+ IMSI: 123456789023000
+ MSISDN: none
+ No auth data
+"
+
+The application to be tested is described by
+- a binary to run,
+- command line arguments to pass to the binary,
+- the VTY telnet port,
+- the application name as printed in the VTY prompt.
+
+This module can either be run directly to run or update a given VTY transcript,
+or it can be imported as a module to run more complex setups.
+'''
+
+import re
+
+from osmopy.osmo_verify_transcript_common import *
+
+class InteractVty(Interact):
+
+ class VtyStep(Interact.StepBase):
+ expect_node = None # e.g. '(config-net)'
+ expect_prompt_char = None # '>' or '#'
+
+ def __init__(self, prompt):
+ super().__init__()
+ self.prompt = prompt
+
+ def verify_interact_state(self, interact_instance):
+ if interact_instance.update:
+ return
+ if interact_instance.this_node != self.expect_node:
+ raise Exception('Mismatch: expected VTY node %r in the prompt, got %r'
+ % (self.expect_node, interact_instance.this_node))
+ if interact_instance.this_prompt_char != self.expect_prompt_char:
+ raise Exception('Mismatch: expected VTY prompt character %r, got %r'
+ % (self.expect_prompt_char, interact_instance.this_prompt_char))
+
+ @staticmethod
+ def is_next_step(line, interact_instance):
+ m = interact_instance.re_prompt.match(line)
+ if not m:
+ return None
+ next_step = InteractVty.VtyStep(interact_instance.prompt)
+ next_step.expect_node = m.group(1)
+ next_step.expect_prompt_char = m.group(2)
+ next_step.command = m.group(3)
+ return next_step
+
+ def command_str(self, interact_instance=None):
+ if interact_instance is None:
+ node = self.expect_node
+ prompt_char = self.expect_prompt_char
+ else:
+ node = interact_instance.last_node
+ prompt_char = interact_instance.last_prompt_char
+ if node:
+ node = '(%s)' % node
+ node = node or ''
+ return '%s%s%s %s' % (self.prompt, node, prompt_char, self.command)
+
+ def __init__(self, prompt, port, host, verbose, update):
+ self.prompt = prompt
+ self.re_prompt = re.compile('^%s(?:\(([\w-]*)\))?([#>]) (.*)$' % self.prompt)
+ super().__init__(InteractVty.VtyStep, port, host, verbose, update)
+
+ def connect(self):
+ self.this_node = None
+ self.this_prompt_char = '>' # slight cheat for initial prompt char
+ self.last_node = None
+ self.last_prompt_char = None
+
+ super().connect()
+ # receive the first welcome message and discard
+ self.socket.recv(4096)
+
+ def _command(self, command_str, timeout=10):
+ self.socket.send(command_str.encode())
+
+ waited_since = time.time()
+ received_lines = []
+ last_line = ''
+
+ while True:
+ new_data = self.socket.recv(4096).decode('utf-8')
+
+ last_line = "%s%s" % (last_line, new_data)
+
+ if last_line:
+ lines = last_line.splitlines()
+ received_lines.extend(lines[:-1])
+ last_line = lines[-1]
+
+ match = self.re_prompt.match(last_line)
+ if not match:
+ if time.time() - waited_since > timeout:
+ raise IOError("Failed to read data (did the app crash?)")
+ time.sleep(.1)
+ continue
+
+ self.last_node = self.this_node
+ self.last_prompt_char = self.this_prompt_char
+ self.this_node = match.group(1) or None
+ self.this_prompt_char = match.group(2)
+ break
+
+ # expecting to have received the command we sent as echo, remove it
+ clean_command_str = command_str.strip()
+ if clean_command_str.endswith('?'):
+ clean_command_str = clean_command_str[:-1]
+ if received_lines and received_lines[0] == clean_command_str:
+ received_lines = received_lines[1:]
+ return received_lines
+
+ def command(self, command_str, timeout=10):
+ command_str = command_str or '\r'
+ if command_str[-1] not in '?\r\t':
+ command_str = command_str + '\r'
+
+ received_lines = self._command(command_str, timeout)
+
+ if command_str[-1] == '?':
+ self._command('\x03', timeout)
+
+ return received_lines
+
+if __name__ == '__main__':
+ parser = common_parser()
+ parser.add_argument('-n', '--prompt-name', dest='prompt',
+ help="Name used in application's telnet VTY prompt.")
+ args = parser.parse_args()
+
+ interact = InteractVty(args.prompt, args.port, args.host, args.verbose, args.update)
+
+ main(command_str=args.command_str,
+ transcript_files=args.transcript_files,
+ interact=interact,
+ verbose=args.verbose)
+
+# vim: tabstop=4 shiftwidth=4 expandtab nocin ai
diff --git a/setup.py b/setup.py
index 44e7fd1..9c25a0d 100755
--- a/setup.py
+++ b/setup.py
@@ -23,7 +23,9 @@
version = __version__,
packages = ["osmopy"],
scripts = ["osmopy/osmodumpdoc.py", "osmopy/osmotestconfig.py",
- "osmopy/osmotestvty.py"],
+ "osmopy/osmotestvty.py",
+ "osmopy/osmo_verify_transcript_vty.py",
+ "osmopy/osmo_verify_transcript_ctrl.py"],
license = "AGPLv3",
description = "Osmopython: osmocom testing scripts",
author = "Katerina Barone-Adesi",
--
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Id47331009910e651372b9c9c76e12f2e8964cc2c
Gerrit-PatchSet: 3
Gerrit-Project: python/osmo-python-tests
Gerrit-Branch: master
Gerrit-Owner: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Gerrit-Reviewer: Harald Welte <laforge at gnumonks.org>
Gerrit-Reviewer: Neels Hofmeyr <nhofmeyr at sysmocom.de>