1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
#!/usr/bin/env python
#
# Copyright (c) 2019 by VMware, Inc. ("VMware")
# Used Copyright (c) 2018 by Network Device Education Foundation,
# Inc. ("NetDEF") in this file.
#
# Permission to use, copy, modify, and/or distribute this software
# for any purpose with or without fee is hereby granted, provided
# that the above copyright notice and this permission notice appear
# in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND VMWARE DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL VMWARE BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
#
"""
Following tests are covered to test BGP basic functionality:
Test steps
- Create topology (setup module)
Creating 4 routers topology, r1, r2, r3 are in IBGP and
r3, r4 are in EBGP
- Bring up topology
- Verify for bgp to converge
- Modify/Delete and verify router-id
"""
import os
import sys
import json
import time
import pytest
from copy import deepcopy
# Save the Current Working Directory to find configuration files.
CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, '../'))
sys.path.append(os.path.join(CWD, '../lib/'))
# Required to instantiate the topology builder class.
# pylint: disable=C0413
# Import topogen and topotest helpers
from lib.topogen import Topogen, get_topogen
from mininet.topo import Topo
from lib.common_config import (
start_topology, stop_topology, write_test_header,
write_test_footer
)
from lib.topolog import logger
from lib.bgp import (
verify_bgp_convergence, create_router_bgp, verify_router_id
)
from lib.topojson import build_topo_from_json, build_config_from_json
# Reading the data from JSON File for topology creation
jsonFile = "{}/bgp_basic_functionality.json".format(CWD)
try:
with open(jsonFile, 'r') as topoJson:
topo = json.load(topoJson)
except IOError:
assert False, "Could not read file {}".format(jsonFile)
class CreateTopo(Topo):
"""
Test BasicTopo - topology 1
* `Topo`: Topology object
"""
def build(self, *_args, **_opts):
"""Build function"""
tgen = get_topogen(self)
# Building topology from json file
build_topo_from_json(tgen, topo)
def setup_module(mod):
"""
Sets up the pytest environment
* `mod`: module name
"""
testsuite_run_time = time.asctime(time.localtime(time.time()))
logger.info("Testsuite start time: {}".format(testsuite_run_time))
logger.info("=" * 40)
logger.info("Running setup_module to create topology")
# This function initiates the topology build with Topogen...
tgen = Topogen(CreateTopo, mod.__name__)
# ... and here it calls Mininet initialization functions.
# Starting topology, create tmp files which are loaded to routers
# to start deamons and then start routers
start_topology(tgen)
# Creating configuration from JSON
build_config_from_json(tgen, topo)
global BGP_CONVERGENCE
BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo)
assert BGP_CONVERGENCE is True, "setup_module :Failed \n Error: {}". \
format(BGP_CONVERGENCE)
logger.info("Running setup_module() done")
def teardown_module():
"""Teardown the pytest environment"""
logger.info("Running teardown_module to delete topology")
tgen = get_topogen()
# Stop toplogy and Remove tmp files
stop_topology(tgen)
logger.info("Testsuite end time: {}".
format(time.asctime(time.localtime(time.time()))))
logger.info("=" * 40)
#####################################################
#
# Testcases
#
#####################################################
def test_modify_and_delete_router_id(request):
""" Test to modify, delete and verify router-id. """
tgen = get_topogen()
if BGP_CONVERGENCE is not True:
pytest.skip('skipped because of BGP Convergence failure')
# test case name
tc_name = request.node.name
write_test_header(tc_name)
# Modify router id
input_dict = {
'r1': {
"bgp": {
'router_id': '12.12.12.12'
}
},
'r2': {
"bgp": {
'router_id': '22.22.22.22'
}
},
'r3': {
"bgp": {
'router_id': '33.33.33.33'
}
},
}
result = create_router_bgp(tgen, topo, input_dict)
assert result is True, "Testcase {} :Failed \n Error: {}".\
format(tc_name, result)
# Verifying router id once modified
result = verify_router_id(tgen, topo, input_dict)
assert result is True, "Testcase {} :Failed \n Error: {}".\
format(tc_name, result)
# Delete router id
input_dict = {
'r1': {
"bgp": {
'del_router_id': True
}
},
'r2': {
"bgp": {
'del_router_id': True
}
},
'r3': {
"bgp": {
'del_router_id': True
}
},
}
result = create_router_bgp(tgen, topo, input_dict)
assert result is True, "Testcase {} :Failed \n Error: {}". \
format(tc_name, result)
# Verifying router id once deleted
# Once router-id is deleted, highest interface ip should become
# router-id
result = verify_router_id(tgen, topo, input_dict)
assert result is True, "Testcase {} :Failed \n Error: {}". \
format(tc_name, result)
write_test_footer(tc_name)
if __name__ == '__main__':
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))
|
