-#!/usr/bin/env python
-
+#!/usr/bin/env python3
+
+from __future__ import print_function
+import logging
+import sys
+import os
+import select
+import signal
import subprocess
import unittest
-import tempfile
+import re
import time
-import resource
+import faulthandler
+import random
+import copy
+import platform
+import shutil
from collections import deque
-from threading import Thread
-from inspect import getdoc
-from hook import StepHook, PollHook
+from threading import Thread, Event
+from inspect import getdoc, isclass
+from traceback import format_exception
+from logging import FileHandler, DEBUG, Formatter
+from enum import Enum
+from abc import ABC, abstractmethod
+from struct import pack, unpack
+
+import scapy.compat
+from scapy.packet import Raw, Packet
from vpp_pg_interface import VppPGInterface
from vpp_sub_interface import VppSubInterface
from vpp_lo_interface import VppLoInterface
+from vpp_bvi_interface import VppBviInterface
from vpp_papi_provider import VppPapiProvider
-from scapy.packet import Raw
-from logging import FileHandler, DEBUG
-from log import *
+from vpp_papi import VppEnum
+import vpp_papi
from vpp_object import VppObjectRegistry
+from util import ppp, is_core_present
+from scapy.layers.inet import IPerror, TCPerror, UDPerror, ICMPerror
+from scapy.layers.inet6 import ICMPv6DestUnreach, ICMPv6EchoRequest
+from scapy.layers.inet6 import ICMPv6EchoReply
+from vpp_running import use_running
+from asfframework import VppAsfTestCase
+
"""
- Test framework module.
+ Packet Generator / Scapy Test framework module.
The module provides a set of tools for constructing and running tests and
representing the results.
Help process information about the next packet.
Set variables to default values.
"""
+
#: Store the index of the packet.
index = -1
#: Store the index of the source packet generator interface of the packet.
#: Store the index of the destination packet generator interface
#: of the packet.
dst = -1
+ #: Store expected ip version
+ ip = -1
+ #: Store expected upper protocol
+ proto = -1
#: Store the copy of the former packet.
data = None
return index and src and dst and data
-def pump_output(out, deque):
- for line in iter(out.readline, b''):
- deque.append(line)
-
-
-class VppTestCase(unittest.TestCase):
+@use_running
+class VppTestCase(VppAsfTestCase):
"""This subclass is a base class for VPP test cases that are implemented as
classes. It provides methods to create and run test case.
"""
else:
return 0
- @classmethod
- def instance(cls):
- """Return the instance of this testcase"""
- return cls.test_instance
-
- @classmethod
- def set_debug_flags(cls, d):
- cls.debug_core = False
- cls.debug_gdb = False
- cls.debug_gdbserver = False
- if d is None:
- return
- dl = d.lower()
- if dl == "core":
- if resource.getrlimit(resource.RLIMIT_CORE)[0] <= 0:
- # give a heads up if this is actually useless
- cls.logger.critical("WARNING: core size limit is set 0, core "
- "files will NOT be created")
- cls.debug_core = True
- elif dl == "gdb":
- cls.debug_gdb = True
- elif dl == "gdbserver":
- cls.debug_gdbserver = True
- else:
- raise Exception("Unrecognized DEBUG option: '%s'" % d)
-
- @classmethod
- def setUpConstants(cls):
- """ Set-up the test case class based on environment variables """
- try:
- s = os.getenv("STEP")
- cls.step = True if s.lower() in ("y", "yes", "1") else False
- except:
- cls.step = False
- try:
- d = os.getenv("DEBUG")
- except:
- d = None
- cls.set_debug_flags(d)
- cls.vpp_bin = os.getenv('VPP_TEST_BIN', "vpp")
- cls.plugin_path = os.getenv('VPP_TEST_PLUGIN_PATH')
- debug_cli = ""
- if cls.step or cls.debug_gdb or cls.debug_gdbserver:
- debug_cli = "cli-listen localhost:5002"
- cls.vpp_cmdline = [cls.vpp_bin,
- "unix", "{", "nodaemon", debug_cli, "}",
- "api-segment", "{", "prefix", cls.shm_prefix, "}"]
- if cls.plugin_path is not None:
- cls.vpp_cmdline.extend(["plugin_path", cls.plugin_path])
- cls.logger.info("vpp_cmdline: %s" % cls.vpp_cmdline)
-
- @classmethod
- def wait_for_enter(cls):
- if cls.debug_gdbserver:
- print(double_line_delim)
- print("Spawned GDB server with PID: %d" % cls.vpp.pid)
- elif cls.debug_gdb:
- print(double_line_delim)
- print("Spawned VPP with PID: %d" % cls.vpp.pid)
- else:
- cls.logger.debug("Spawned VPP with PID: %d" % cls.vpp.pid)
- return
- print(single_line_delim)
- print("You can debug the VPP using e.g.:")
- if cls.debug_gdbserver:
- print("gdb " + cls.vpp_bin + " -ex 'target remote localhost:7777'")
- print("Now is the time to attach a gdb by running the above "
- "command, set up breakpoints etc. and then resume VPP from "
- "within gdb by issuing the 'continue' command")
- elif cls.debug_gdb:
- print("gdb " + cls.vpp_bin + " -ex 'attach %s'" % cls.vpp.pid)
- print("Now is the time to attach a gdb by running the above "
- "command and set up breakpoints etc.")
- print(single_line_delim)
- raw_input("Press ENTER to continue running the testcase...")
-
- @classmethod
- def run_vpp(cls):
- cmdline = cls.vpp_cmdline
-
- if cls.debug_gdbserver:
- gdbserver = '/usr/bin/gdbserver'
- if not os.path.isfile(gdbserver) or \
- not os.access(gdbserver, os.X_OK):
- raise Exception("gdbserver binary '%s' does not exist or is "
- "not executable" % gdbserver)
-
- cmdline = [gdbserver, 'localhost:7777'] + cls.vpp_cmdline
- cls.logger.info("Gdbserver cmdline is %s", " ".join(cmdline))
-
- try:
- cls.vpp = subprocess.Popen(cmdline,
- stdout=subprocess.PIPE,
- stderr=subprocess.PIPE,
- bufsize=1)
- except Exception as e:
- cls.logger.critical("Couldn't start vpp: %s" % e)
- raise
-
- cls.wait_for_enter()
-
@classmethod
def setUpClass(cls):
- """
- Perform class setup before running the testcase
- Remove shared memory files, start vpp and connect the vpp-api
- """
- cls.logger = getLogger(cls.__name__)
- cls.tempdir = tempfile.mkdtemp(
- prefix='vpp-unittest-' + cls.__name__ + '-')
- file_handler = FileHandler("%s/log.txt" % cls.tempdir)
- file_handler.setLevel(DEBUG)
- cls.logger.addHandler(file_handler)
- cls.shm_prefix = cls.tempdir.split("/")[-1]
- os.chdir(cls.tempdir)
- cls.logger.info("Temporary dir is %s, shm prefix is %s",
- cls.tempdir, cls.shm_prefix)
- cls.setUpConstants()
+ super(VppTestCase, cls).setUpClass()
cls.reset_packet_infos()
- cls._captures = []
- cls._zombie_captures = []
- cls.verbose = 0
- cls.vpp_dead = False
- cls.registry = VppObjectRegistry()
- print(double_line_delim)
- print(colorize(getdoc(cls).splitlines()[0], YELLOW))
- print(double_line_delim)
- # need to catch exceptions here because if we raise, then the cleanup
- # doesn't get called and we might end with a zombie vpp
- try:
- cls.run_vpp()
- cls.vpp_stdout_deque = deque()
- cls.vpp_stdout_reader_thread = Thread(target=pump_output, args=(
- cls.vpp.stdout, cls.vpp_stdout_deque))
- cls.vpp_stdout_reader_thread.start()
- cls.vpp_stderr_deque = deque()
- cls.vpp_stderr_reader_thread = Thread(target=pump_output, args=(
- cls.vpp.stderr, cls.vpp_stderr_deque))
- cls.vpp_stderr_reader_thread.start()
- cls.vapi = VppPapiProvider(cls.shm_prefix, cls.shm_prefix, cls)
- if cls.step:
- hook = StepHook(cls)
- else:
- hook = PollHook(cls)
- cls.vapi.register_hook(hook)
- time.sleep(0.1)
- hook.poll_vpp()
- try:
- cls.vapi.connect()
- except:
- if cls.debug_gdbserver:
- print(colorize("You're running VPP inside gdbserver but "
- "VPP-API connection failed, did you forget "
- "to 'continue' VPP from within gdb?", RED))
- raise
- except:
- t, v, tb = sys.exc_info()
- try:
- cls.quit()
- except:
- pass
- raise t, v, tb
-
- @classmethod
- def quit(cls):
- """
- Disconnect vpp-api, kill vpp and cleanup shared memory files
- """
- if (cls.debug_gdbserver or cls.debug_gdb) and hasattr(cls, 'vpp'):
- cls.vpp.poll()
- if cls.vpp.returncode is None:
- print(double_line_delim)
- print("VPP or GDB server is still running")
- print(single_line_delim)
- raw_input("When done debugging, press ENTER to kill the "
- "process and finish running the testcase...")
-
- if hasattr(cls, 'vpp'):
- if hasattr(cls, 'vapi'):
- cls.vapi.disconnect()
- cls.vpp.poll()
- if cls.vpp.returncode is None:
- cls.vpp.terminate()
- del cls.vpp
-
- if hasattr(cls, 'vpp_stdout_deque'):
- cls.logger.info(single_line_delim)
- cls.logger.info('VPP output to stdout while running %s:',
- cls.__name__)
- cls.logger.info(single_line_delim)
- f = open(cls.tempdir + '/vpp_stdout.txt', 'w')
- vpp_output = "".join(cls.vpp_stdout_deque)
- f.write(vpp_output)
- cls.logger.info('\n%s', vpp_output)
- cls.logger.info(single_line_delim)
-
- if hasattr(cls, 'vpp_stderr_deque'):
- cls.logger.info(single_line_delim)
- cls.logger.info('VPP output to stderr while running %s:',
- cls.__name__)
- cls.logger.info(single_line_delim)
- f = open(cls.tempdir + '/vpp_stderr.txt', 'w')
- vpp_output = "".join(cls.vpp_stderr_deque)
- f.write(vpp_output)
- cls.logger.info('\n%s', vpp_output)
- cls.logger.info(single_line_delim)
+ cls._pcaps = []
+ cls._old_pcaps = []
@classmethod
def tearDownClass(cls):
- """ Perform final cleanup after running all tests in this test-case """
- cls.quit()
-
- def tearDown(self):
- """ Show various debug prints after each test """
- if not self.vpp_dead:
- self.logger.debug(self.vapi.cli("show trace"))
- self.logger.info(self.vapi.ppcli("show int"))
- self.logger.info(self.vapi.ppcli("show hardware"))
- self.logger.info(self.vapi.ppcli("show error"))
- self.logger.info(self.vapi.ppcli("show run"))
- self.registry.remove_vpp_config(self.logger)
-
- def setUp(self):
- """ Clear trace before running each test"""
- if self.vpp_dead:
- raise Exception("VPP is dead when setting up the test")
- time.sleep(.1)
- self.vpp_stdout_deque.append(
- "--- test setUp() for %s.%s(%s) starts here ---\n" %
- (self.__class__.__name__, self._testMethodName,
- self._testMethodDoc))
- self.vpp_stderr_deque.append(
- "--- test setUp() for %s.%s(%s) starts here ---\n" %
- (self.__class__.__name__, self._testMethodName,
- self._testMethodDoc))
- self.vapi.cli("clear trace")
- # store the test instance inside the test class - so that objects
- # holding the class can access instance methods (like assertEqual)
- type(self).test_instance = self
+ cls.logger.debug("--- tearDownClass() for %s called ---" % cls.__name__)
+ cls.reset_packet_infos()
+ super(VppTestCase, cls).tearDownClass()
@classmethod
- def pg_enable_capture(cls, interfaces):
+ def pg_enable_capture(cls, interfaces=None):
"""
Enable capture on packet-generator interfaces
- :param interfaces: iterable interface indexes
+ :param interfaces: iterable interface indexes (if None,
+ use self.pg_interfaces)
"""
+ if interfaces is None:
+ interfaces = cls.pg_interfaces
for i in interfaces:
i.enable_capture()
@classmethod
- def register_capture(cls, cap_name):
- """ Register a capture in the testclass """
+ def register_pcap(cls, intf, worker):
+ """Register a pcap in the testclass"""
# add to the list of captures with current timestamp
- cls._captures.append((time.time(), cap_name))
- # filter out from zombies
- cls._zombie_captures = [(stamp, name)
- for (stamp, name) in cls._zombie_captures
- if name != cap_name]
+ cls._pcaps.append((intf, worker))
@classmethod
- def pg_start(cls):
- """ Remove any zombie captures and enable the packet generator """
- # how long before capture is allowed to be deleted - otherwise vpp
- # crashes - 100ms seems enough (this shouldn't be needed at all)
- capture_ttl = 0.1
- now = time.time()
- for stamp, cap_name in cls._zombie_captures:
- wait = stamp + capture_ttl - now
- if wait > 0:
- cls.logger.debug("Waiting for %ss before deleting capture %s",
- wait, cap_name)
- time.sleep(wait)
- now = time.time()
- cls.logger.debug("Removing zombie capture %s" % cap_name)
- cls.vapi.cli('packet-generator delete %s' % cap_name)
-
- cls.vapi.cli("trace add pg-input 50") # 50 is maximum
- cls.vapi.cli('packet-generator enable')
- cls._zombie_captures = cls._captures
- cls._captures = []
+ def pg_start(cls, trace=True, traceFilter=False):
+ """Enable the PG, wait till it is done, then clean up"""
+ for intf, worker in cls._old_pcaps:
+ intf.remove_old_pcap_file(intf.get_in_path(worker))
+ cls._old_pcaps = []
+ if trace:
+ cls.vapi.cli("clear trace")
+ cls.vapi.cli("trace add pg-input 1000" + (" filter" if traceFilter else ""))
+ cls.vapi.cli("packet-generator enable")
+ # PG, when starts, runs to completion -
+ # so let's avoid a race condition,
+ # and wait a little till it's done.
+ # Then clean it up - and then be gone.
+ deadline = time.time() + 300
+ while cls.vapi.cli("show packet-generator").find("Yes") != -1:
+ cls.sleep(0.01) # yield
+ if time.time() > deadline:
+ cls.logger.error("Timeout waiting for pg to stop")
+ break
+ for intf, worker in cls._pcaps:
+ cls.vapi.cli("packet-generator delete %s" % intf.get_cap_name(worker))
+ cls._old_pcaps = cls._pcaps
+ cls._pcaps = []
@classmethod
- def create_pg_interfaces(cls, interfaces):
+ def create_pg_interfaces_internal(cls, interfaces, gso=0, gso_size=0, mode=None):
"""
Create packet-generator interfaces.
"""
result = []
for i in interfaces:
- intf = VppPGInterface(cls, i)
+ intf = VppPGInterface(cls, i, gso, gso_size, mode)
setattr(cls, intf.name, intf)
result.append(intf)
cls.pg_interfaces = result
return result
@classmethod
- def create_loopback_interfaces(cls, interfaces):
+ def create_pg_ip4_interfaces(cls, interfaces, gso=0, gso_size=0):
+ if not hasattr(cls, "vpp"):
+ cls.pg_interfaces = []
+ return cls.pg_interfaces
+ pgmode = VppEnum.vl_api_pg_interface_mode_t
+ return cls.create_pg_interfaces_internal(
+ interfaces, gso, gso_size, pgmode.PG_API_MODE_IP4
+ )
+
+ @classmethod
+ def create_pg_ip6_interfaces(cls, interfaces, gso=0, gso_size=0):
+ if not hasattr(cls, "vpp"):
+ cls.pg_interfaces = []
+ return cls.pg_interfaces
+ pgmode = VppEnum.vl_api_pg_interface_mode_t
+ return cls.create_pg_interfaces_internal(
+ interfaces, gso, gso_size, pgmode.PG_API_MODE_IP6
+ )
+
+ @classmethod
+ def create_pg_interfaces(cls, interfaces, gso=0, gso_size=0):
+ if not hasattr(cls, "vpp"):
+ cls.pg_interfaces = []
+ return cls.pg_interfaces
+ pgmode = VppEnum.vl_api_pg_interface_mode_t
+ return cls.create_pg_interfaces_internal(
+ interfaces, gso, gso_size, pgmode.PG_API_MODE_ETHERNET
+ )
+
+ @classmethod
+ def create_pg_ethernet_interfaces(cls, interfaces, gso=0, gso_size=0):
+ if not hasattr(cls, "vpp"):
+ cls.pg_interfaces = []
+ return cls.pg_interfaces
+ pgmode = VppEnum.vl_api_pg_interface_mode_t
+ return cls.create_pg_interfaces_internal(
+ interfaces, gso, gso_size, pgmode.PG_API_MODE_ETHERNET
+ )
+
+ @classmethod
+ def create_loopback_interfaces(cls, count):
"""
Create loopback interfaces.
- :param interfaces: iterable indexes of the interfaces.
+ :param count: number of interfaces created.
:returns: List of created interfaces.
"""
- result = []
- for i in interfaces:
- intf = VppLoInterface(cls, i)
+ if not hasattr(cls, "vpp"):
+ cls.lo_interfaces = []
+ return cls.lo_interfaces
+ result = [VppLoInterface(cls) for i in range(count)]
+ for intf in result:
setattr(cls, intf.name, intf)
- result.append(intf)
cls.lo_interfaces = result
return result
+ @classmethod
+ def create_bvi_interfaces(cls, count):
+ """
+ Create BVI interfaces.
+
+ :param count: number of interfaces created.
+ :returns: List of created interfaces.
+ """
+ if not hasattr(cls, "vpp"):
+ cls.bvi_interfaces = []
+ return cls.bvi_interfaces
+ result = [VppBviInterface(cls) for i in range(count)]
+ for intf in result:
+ setattr(cls, intf.name, intf)
+ cls.bvi_interfaces = result
+ return result
+
@staticmethod
- def extend_packet(packet, size):
+ def extend_packet(packet, size, padding=" "):
"""
- Extend packet to given size by padding with spaces
+ Extend packet to given size by padding with spaces or custom padding
NOTE: Currently works only when Raw layer is present.
:param packet: packet
:param size: target size
+ :param padding: padding used to extend the payload
"""
packet_len = len(packet) + 4
extend = size - packet_len
if extend > 0:
- packet[Raw].load += ' ' * extend
+ num = (extend // len(padding)) + 1
+ packet[Raw].load += (padding * num)[:extend].encode("ascii")
@classmethod
def reset_packet_infos(cls):
- """ Reset the list of packet info objects and packet counts to zero """
+ """Reset the list of packet info objects and packet counts to zero"""
cls._packet_infos = {}
cls._packet_count_for_dst_if_idx = {}
:returns: string containing serialized data from packet info
"""
- return "%d %d %d" % (info.index, info.src, info.dst)
+
+ # retrieve payload, currently 18 bytes (4 x ints + 1 short)
+ return pack("iiiih", info.index, info.src, info.dst, info.ip, info.proto)
@staticmethod
- def payload_to_info(payload):
+ def payload_to_info(payload, payload_field="load"):
"""
Convert packet payload to _PacketInfo object
:param payload: packet payload
-
+ :type payload: <class 'scapy.packet.Raw'>
+ :param payload_field: packet fieldname of payload "load" for
+ <class 'scapy.packet.Raw'>
+ :type payload_field: str
:returns: _PacketInfo object containing de-serialized data from payload
"""
- numbers = payload.split()
+
+ # retrieve payload, currently 18 bytes (4 x ints + 1 short)
+ payload_b = getattr(payload, payload_field)[:18]
+
info = _PacketInfo()
- info.index = int(numbers[0])
- info.src = int(numbers[1])
- info.dst = int(numbers[2])
+ info.index, info.src, info.dst, info.ip, info.proto = unpack("iiiih", payload_b)
+
+ # some SRv6 TCs depend on get an exception if bad values are detected
+ if info.index > 0x4000:
+ raise ValueError("Index value is invalid")
+
return info
def get_next_packet_info(self, info):
if info.dst == dst_index:
return info
- def assert_equal(self, real_value, expected_value, name_or_class=None):
- if name_or_class is None:
- self.assertEqual(real_value, expected_value, msg)
+ def assert_packet_checksums_valid(self, packet, ignore_zero_udp_checksums=True):
+ received = packet.__class__(scapy.compat.raw(packet))
+ udp_layers = ["UDP", "UDPerror"]
+ checksum_fields = ["cksum", "chksum"]
+ checksums = []
+ counter = 0
+ temp = received.__class__(scapy.compat.raw(received))
+ while True:
+ layer = temp.getlayer(counter)
+ if layer:
+ layer = layer.copy()
+ layer.remove_payload()
+ for cf in checksum_fields:
+ if hasattr(layer, cf):
+ if (
+ ignore_zero_udp_checksums
+ and 0 == getattr(layer, cf)
+ and layer.name in udp_layers
+ ):
+ continue
+ delattr(temp.getlayer(counter), cf)
+ checksums.append((counter, cf))
+ else:
+ break
+ counter = counter + 1
+ if 0 == len(checksums):
return
- try:
- msg = "Invalid %s: %d('%s') does not match expected value %d('%s')"
- msg = msg % (getdoc(name_or_class).strip(),
- real_value, str(name_or_class(real_value)),
- expected_value, str(name_or_class(expected_value)))
- except:
- msg = "Invalid %s: %s does not match expected value %s" % (
- name_or_class, real_value, expected_value)
-
- self.assertEqual(real_value, expected_value, msg)
-
- def assert_in_range(
- self,
- real_value,
- expected_min,
- expected_max,
- name=None):
- if name is None:
- msg = None
- else:
- msg = "Invalid %s: %s out of range <%s,%s>" % (
- name, real_value, expected_min, expected_max)
- self.assertTrue(expected_min <= real_value <= expected_max, msg)
-
-
-class VppTestResult(unittest.TestResult):
- """
- @property result_string
- String variable to store the test case result string.
- @property errors
- List variable containing 2-tuples of TestCase instances and strings
- holding formatted tracebacks. Each tuple represents a test which
- raised an unexpected exception.
- @property failures
- List variable containing 2-tuples of TestCase instances and strings
- holding formatted tracebacks. Each tuple represents a test where
- a failure was explicitly signalled using the TestCase.assert*()
- methods.
- """
-
- def __init__(self, stream, descriptions, verbosity):
- """
- :param stream File descriptor to store where to report test results.
- Set to the standard error stream by default.
- :param descriptions Boolean variable to store information if to use
- test case descriptions.
- :param verbosity Integer variable to store required verbosity level.
- """
- unittest.TestResult.__init__(self, stream, descriptions, verbosity)
- self.stream = stream
- self.descriptions = descriptions
- self.verbosity = verbosity
- self.result_string = None
-
- def addSuccess(self, test):
- """
- Record a test succeeded result
-
- :param test:
-
- """
- unittest.TestResult.addSuccess(self, test)
- self.result_string = colorize("OK", GREEN)
-
- def addSkip(self, test, reason):
- """
- Record a test skipped.
-
- :param test:
- :param reason:
-
- """
- unittest.TestResult.addSkip(self, test, reason)
- self.result_string = colorize("SKIP", YELLOW)
-
- def addFailure(self, test, err):
- """
- Record a test failed result
-
- :param test:
- :param err: error message
-
- """
- unittest.TestResult.addFailure(self, test, err)
- if hasattr(test, 'tempdir'):
- self.result_string = colorize("FAIL", RED) + \
- ' [ temp dir used by test case: ' + test.tempdir + ' ]'
- else:
- self.result_string = colorize("FAIL", RED) + ' [no temp dir]'
-
- def addError(self, test, err):
- """
- Record a test error result
-
- :param test:
- :param err: error message
-
- """
- unittest.TestResult.addError(self, test, err)
- if hasattr(test, 'tempdir'):
- self.result_string = colorize("ERROR", RED) + \
- ' [ temp dir used by test case: ' + test.tempdir + ' ]'
- else:
- self.result_string = colorize("ERROR", RED) + ' [no temp dir]'
-
- def getDescription(self, test):
- """
- Get test description
-
- :param test:
- :returns: test description
-
- """
- # TODO: if none print warning not raise exception
- short_description = test.shortDescription()
- if self.descriptions and short_description:
- return short_description
- else:
- return str(test)
-
- def startTest(self, test):
- """
- Start a test
-
- :param test:
-
- """
- unittest.TestResult.startTest(self, test)
- if self.verbosity > 0:
- self.stream.writeln(
- "Starting " + self.getDescription(test) + " ...")
- self.stream.writeln(single_line_delim)
-
- def stopTest(self, test):
- """
- Stop a test
-
- :param test:
-
- """
- unittest.TestResult.stopTest(self, test)
- if self.verbosity > 0:
- self.stream.writeln(single_line_delim)
- self.stream.writeln("%-60s%s" % (self.getDescription(test),
- self.result_string))
- self.stream.writeln(single_line_delim)
- else:
- self.stream.writeln("%-60s%s" % (self.getDescription(test),
- self.result_string))
-
- def printErrors(self):
- """
- Print errors from running the test case
- """
- self.stream.writeln()
- self.printErrorList('ERROR', self.errors)
- self.printErrorList('FAIL', self.failures)
-
- def printErrorList(self, flavour, errors):
- """
- Print error list to the output stream together with error type
- and test case description.
-
- :param flavour: error type
- :param errors: iterable errors
-
- """
- for test, err in errors:
- self.stream.writeln(double_line_delim)
- self.stream.writeln("%s: %s" %
- (flavour, self.getDescription(test)))
- self.stream.writeln(single_line_delim)
- self.stream.writeln("%s" % err)
-
-
-class VppTestRunner(unittest.TextTestRunner):
- """
- A basic test runner implementation which prints results on standard error.
- """
- @property
- def resultclass(self):
- """Class maintaining the results of the tests"""
- return VppTestResult
+ temp = temp.__class__(scapy.compat.raw(temp))
+ for layer, cf in reversed(checksums):
+ calc_sum = getattr(temp[layer], cf)
+ self.assert_equal(
+ getattr(received[layer], cf),
+ calc_sum,
+ "packet checksum on layer #%d: %s" % (layer, temp[layer].name),
+ )
+ self.logger.debug(
+ "Checksum field `%s` on `%s` layer has correct value `%s`"
+ % (cf, temp[layer].name, calc_sum)
+ )
+
+ def assert_checksum_valid(
+ self,
+ received_packet,
+ layer,
+ checksum_field_names=["chksum", "cksum"],
+ ignore_zero_checksum=False,
+ ):
+ """Check checksum of received packet on given layer"""
+ layer_copy = received_packet[layer].copy()
+ layer_copy.remove_payload()
+ field_name = None
+ for f in checksum_field_names:
+ if hasattr(layer_copy, f):
+ field_name = f
+ break
+ if field_name is None:
+ raise Exception(
+ f"Layer `{layer}` has none of checksum fields: `{checksum_field_names}`."
+ )
+ received_packet_checksum = getattr(received_packet[layer], field_name)
+ if ignore_zero_checksum and 0 == received_packet_checksum:
+ return
+ recalculated = received_packet.__class__(scapy.compat.raw(received_packet))
+ delattr(recalculated[layer], field_name)
+ recalculated = recalculated.__class__(scapy.compat.raw(recalculated))
+ self.assert_equal(
+ received_packet_checksum,
+ getattr(recalculated[layer], field_name),
+ f"packet checksum (field: {field_name}) on layer: %s" % layer,
+ )
+
+ def assert_ip_checksum_valid(self, received_packet, ignore_zero_checksum=False):
+ self.assert_checksum_valid(
+ received_packet, "IP", ignore_zero_checksum=ignore_zero_checksum
+ )
+
+ def assert_tcp_checksum_valid(self, received_packet, ignore_zero_checksum=False):
+ self.assert_checksum_valid(
+ received_packet, "TCP", ignore_zero_checksum=ignore_zero_checksum
+ )
+
+ def assert_udp_checksum_valid(self, received_packet, ignore_zero_checksum=True):
+ self.assert_checksum_valid(
+ received_packet, "UDP", ignore_zero_checksum=ignore_zero_checksum
+ )
+
+ def assert_embedded_icmp_checksum_valid(self, received_packet):
+ if received_packet.haslayer(IPerror):
+ self.assert_checksum_valid(received_packet, "IPerror")
+ if received_packet.haslayer(TCPerror):
+ self.assert_checksum_valid(received_packet, "TCPerror")
+ if received_packet.haslayer(UDPerror):
+ self.assert_checksum_valid(
+ received_packet, "UDPerror", ignore_zero_checksum=True
+ )
+ if received_packet.haslayer(ICMPerror):
+ self.assert_checksum_valid(received_packet, "ICMPerror")
+
+ def assert_icmp_checksum_valid(self, received_packet):
+ self.assert_checksum_valid(received_packet, "ICMP")
+ self.assert_embedded_icmp_checksum_valid(received_packet)
+
+ def assert_icmpv6_checksum_valid(self, pkt):
+ if pkt.haslayer(ICMPv6DestUnreach):
+ self.assert_checksum_valid(pkt, "ICMPv6DestUnreach")
+ self.assert_embedded_icmp_checksum_valid(pkt)
+ if pkt.haslayer(ICMPv6EchoRequest):
+ self.assert_checksum_valid(pkt, "ICMPv6EchoRequest")
+ if pkt.haslayer(ICMPv6EchoReply):
+ self.assert_checksum_valid(pkt, "ICMPv6EchoReply")
+
+ def assert_packet_counter_equal(self, counter, expected_value):
+ counter_value = self.get_counter(counter)
+ self.assert_equal(
+ counter_value, expected_value, "packet counter `%s'" % counter
+ )
+
+ def pg_send(self, intf, pkts, worker=None, trace=True):
+ intf.add_stream(pkts, worker=worker)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start(trace=trace)
+
+ def send_and_assert_no_replies(
+ self, intf, pkts, remark="", timeout=None, stats_diff=None, trace=True, msg=None
+ ):
+ if stats_diff:
+ stats_snapshot = self.snapshot_stats(stats_diff)
+
+ self.pg_send(intf, pkts)
- def run(self, test):
- """
- Run the tests
+ try:
+ if not timeout:
+ timeout = 1
+ for i in self.pg_interfaces:
+ i.assert_nothing_captured(timeout=timeout, remark=remark)
+ timeout = 0.1
+ finally:
+ if trace:
+ if msg:
+ self.logger.debug(f"send_and_assert_no_replies: {msg}")
+ self.logger.debug(self.vapi.cli("show trace"))
+
+ if stats_diff:
+ self.compare_stats_with_snapshot(stats_diff, stats_snapshot)
+
+ def send_and_expect(
+ self,
+ intf,
+ pkts,
+ output,
+ n_rx=None,
+ worker=None,
+ trace=True,
+ msg=None,
+ stats_diff=None,
+ ):
+ if stats_diff:
+ stats_snapshot = self.snapshot_stats(stats_diff)
+
+ if not n_rx:
+ n_rx = 1 if isinstance(pkts, Packet) else len(pkts)
+ self.pg_send(intf, pkts, worker=worker, trace=trace)
+ rx = output.get_capture(n_rx)
+ if trace:
+ if msg:
+ self.logger.debug(f"send_and_expect: {msg}")
+ self.logger.debug(self.vapi.cli("show trace"))
- :param test:
+ if stats_diff:
+ self.compare_stats_with_snapshot(stats_diff, stats_snapshot)
+
+ return rx
+
+ def send_and_expect_load_balancing(
+ self, input, pkts, outputs, worker=None, trace=True
+ ):
+ self.pg_send(input, pkts, worker=worker, trace=trace)
+ rxs = []
+ for oo in outputs:
+ rx = oo._get_capture(1)
+ self.assertNotEqual(0, len(rx), f"0 != len(rx) ({len(rx)})")
+ rxs.append(rx)
+ if trace:
+ self.logger.debug(self.vapi.cli("show trace"))
+ return rxs
- """
- print("Running tests using custom test runner") # debug message
- return super(VppTestRunner, self).run(test)
+ def send_and_expect_some(self, intf, pkts, output, worker=None, trace=True):
+ self.pg_send(intf, pkts, worker=worker, trace=trace)
+ rx = output._get_capture(1)
+ if trace:
+ self.logger.debug(self.vapi.cli("show trace"))
+ self.assertTrue(len(rx) > 0)
+ self.assertTrue(
+ len(rx) <= len(pkts), f"len(rx) ({len(rx)}) > len(pkts) ({len(pkts)})"
+ )
+ return rx
+
+ def send_and_expect_only(self, intf, pkts, output, timeout=None, stats_diff=None):
+ if stats_diff:
+ stats_snapshot = self.snapshot_stats(stats_diff)
+
+ self.pg_send(intf, pkts)
+ rx = output.get_capture(len(pkts))
+ outputs = [output]
+ if not timeout:
+ timeout = 1
+ for i in self.pg_interfaces:
+ if i not in outputs:
+ i.assert_nothing_captured(timeout=timeout)
+ timeout = 0.1
+
+ if stats_diff:
+ self.compare_stats_with_snapshot(stats_diff, stats_snapshot)
+
+ return rx
+
+
+if __name__ == "__main__":
+ pass
Code Review / vpp.git / blobdiff